Component

Pectin, structurally heterogeneous plant polysaccharides

Pectin is a family of structurally heterogeneous plant cell-wall polysaccharides, not one small molecule. Homogalacturonan, RG-I, RG-II and side chains have separate identities. Methylesterification, its distribution, molecular size, source and processing affect behavior. No essential pectin intake or specific human pectin-deficiency syndrome is established. Modified citrus products are not interchangeable with food pectin.

20 recorded relationships. Experimental role, claim status and evidence remain attached to each record.

Read recorded mechanisms Open recursive mind map

How nutrients influence it

Every nutrient with a recorded effect on this component, credited to the nutrient that acted rather than the chapter that recorded it. Open a nutrient to see the findings and the conditions they were measured under.

How nutrients reach it in more than one step

Chains of two or more recorded steps that end here, grouped by the nutrient they start from. Each step is a separate finding, so a chain is a route a mechanism could take, not proof that it does.

Tracing routes…

What it does

Every recorded relationship this component is part of, grouped by its role. Plain wording comes first; the technical statement follows.

Recorded relationships

What it acts on

  1. Pectin significantly reduced net ammonia generation in incubations after subjects had been pre-fed pectin; the reduction without pre-feeding was not significant.

    Pectin, structurally heterogeneous plant polysaccharides → Net ammonia generation in human fecal cultures source_derived_draftungraded
    Experimental context and source evidence
    evidence_span
    {"source_cache": "artifacts/pectin-research/2317475.abstract.txt", "locator": "Primary indexed abstract; zero-based, end-exclusive Unicode character offsets", "file_sha256": "86aae760cc52aeca6f270420e20dabaffa8167770fa30c7fa8e35b1f67b7d9b4", "start_char": 0, "end_char": 1642, "text_sha256": "86aae760cc52aeca6f270420e20dabaffa8167770fa30c7fa8e35b1f67b7d9b4"}
    experimental_model
    Anaerobic human fecal incubations before and after carbohydrate pre-feeding
    exposure
    Pectin and comparator carbohydrates; 48-hour incubations, up to two weeks of pre-feeding
    limitations
    Cultures lack intestinal absorption and host metabolism; results do not quantify systemic exposure.
    nutrient_topic
    Pectin research collection; topical membership is not evidence of a direct dietary effect. · Pectin, structurally heterogeneous plant polysaccharides
    organism
    Human fecal microbiota ex vivo
    plain_language
    Previous exposure changed the measured nitrogen-metabolism response.
    primary_references
    [pectin-p2317475] The effect of lactulose, pectin, arabinogalactan and cellulose on the production of organic acids and metabolism of ammonia by intestinal bacteria in a faecal incubation system. (1990). https://pubmed.ncbi.nlm.nih.gov/2317475/ DOI: 10.1079/bjn19900088
    tissue_or_cell_type
    Batch cultures

    Pectin: metabolism, signaling and nutrient connections (2026-09-17) · lines 880–891

    AI-assisted literature curation; primary study URLs and scope retained in the document and extraction. Not publisher full text. · supports · Anaerobic human fecal incubations before and after carbohydrate pre-feeding · source_derived_draft · unverified_draft

    ### pectin-ammonia Pectin significantly reduced net ammonia generation in incubations after subjects had been pre-fed pectin; the reduction without pre-feeding was not significant. Condition category: normal nutrient_topic: Pectin research collection; topical membership is not evidence of a direct dietary effect. plain_language: Previous exposure changed the measured nitrogen-metabolism response. organism: Human fecal microbiota ex vivo tissue_or_cell_type: Batch cultures experimental_model: Anaerobic human fecal incubations before and after carbohydrate pre-feeding limitations: Cultures lack intestinal absorption and host metabolism; results do not quantify systemic exposure. exposure: Pectin and comparator carbohydrates; 48-hour incubations, up to two weeks of pre-feeding evidence_span: {"source_cache": "artifacts/pectin-research/2317475.abstract.txt", "locator": "Primary indexed abstract; zero-based, end-exclusive Unicode character offsets", "file_sha256": "86aae760cc52aeca6f270420e20dabaffa8167770fa30c7fa8e35b1f67b7d9b4", "start_char": 0, "end_char": 1642, "text_sha256": "86aae760cc52aeca6f270420e20dabaffa8167770fa30c7fa8e35b1f67b7d9b4"} [pectin-p2317475] The effect of lactulose, pectin, arabinogalactan and cellulose on the production of organic acids and metabolism of ammonia by intestinal bacteria in a faecal incubation system. (1990). https://pubmed.ncbi.nlm.nih.gov/2317475/ DOI: 10.1079/bjn19900088
    Complete structured claim and evidence

  2. Fecal bile-acid excretion rose by 35%.

    Pectin, structurally heterogeneous plant polysaccharides → Human fecal bile-acid excretion source_derived_draftungraded
    Experimental context and source evidence
    evidence_span
    {"source_cache": "artifacts/pectin-research/37887.abstract.txt", "locator": "Primary indexed abstract; zero-based, end-exclusive Unicode character offsets", "file_sha256": "ad5427835e84a210b32e8ceea45baeece0bc1e4488d5852a5b4244f51dc32a69", "start_char": 0, "end_char": 1141, "text_sha256": "ad5427835e84a210b32e8ceea45baeece0bc1e4488d5852a5b4244f51dc32a69"}
    experimental_model
    Controlled feeding and balance study in five healthy men
    exposure
    Nine-week protocol; 36 g/day pectin during last six weeks
    limitations
    Small older study. Disappearance from stool supported fermentation but did not assign a particular enzyme or metabolic flux.
    nutrient_topic
    Pectin research collection; topical membership is not evidence of a direct dietary effect. · Pectin, structurally heterogeneous plant polysaccharides
    organism
    Homo sapiens
    plain_language
    More bile acids left the body in stool; this study did not directly test hepatic CYP7A1.
    primary_references
    [pectin-p37887] The digestion of pectin in the human gut and its effect on calcium absorption and large bowel function. (1979). https://pubmed.ncbi.nlm.nih.gov/37887/ DOI: 10.1079/bjn19790062
    tissue_or_cell_type
    Whole-gut balance and stool

    Pectin: metabolism, signaling and nutrient connections (2026-09-17) · lines 737–748

    AI-assisted literature curation; primary study URLs and scope retained in the document and extraction. Not publisher full text. · supports · Controlled feeding and balance study in five healthy men · source_derived_draft · unverified_draft

    ### pectin-bile-excretion Fecal bile-acid excretion rose by 35%. Condition category: normal nutrient_topic: Pectin research collection; topical membership is not evidence of a direct dietary effect. plain_language: More bile acids left the body in stool; this study did not directly test hepatic CYP7A1. organism: Homo sapiens tissue_or_cell_type: Whole-gut balance and stool experimental_model: Controlled feeding and balance study in five healthy men limitations: Small older study. Disappearance from stool supported fermentation but did not assign a particular enzyme or metabolic flux. exposure: Nine-week protocol; 36 g/day pectin during last six weeks evidence_span: {"source_cache": "artifacts/pectin-research/37887.abstract.txt", "locator": "Primary indexed abstract; zero-based, end-exclusive Unicode character offsets", "file_sha256": "ad5427835e84a210b32e8ceea45baeece0bc1e4488d5852a5b4244f51dc32a69", "start_char": 0, "end_char": 1141, "text_sha256": "ad5427835e84a210b32e8ceea45baeece0bc1e4488d5852a5b4244f51dc32a69"} [pectin-p37887] The digestion of pectin in the human gut and its effect on calcium absorption and large bowel function. (1979). https://pubmed.ncbi.nlm.nih.gov/37887/ DOI: 10.1079/bjn19790062
    Complete structured claim and evidence

  3. Blood acetate began rising about six hours after pectin and remained around twice fasting levels for the following 18 hours.

    Pectin, structurally heterogeneous plant polysaccharides → Human venous plasma acetate concentration source_derived_draftungraded
    Experimental context and source evidence
    evidence_span
    {"source_cache": "artifacts/pectin-research/3998144.abstract.txt", "locator": "Primary indexed abstract; zero-based, end-exclusive Unicode character offsets", "file_sha256": "027517b7db8dce720509f94d183d6ab4b9bb6aed84e6ace679e421a72c31c6a6", "start_char": 0, "end_char": 1849, "text_sha256": "027517b7db8dce720509f94d183d6ab4b9bb6aed84e6ace679e421a72c31c6a6"}
    experimental_model
    Human oral substrate challenge with blood SCFA measurements
    exposure
    20 g pectin after a 16-hour fast
    limitations
    Blood acetate is a systemic appearance measure, not a complete measure of colonic production or benefit.
    nutrient_topic
    Pectin research collection; topical membership is not evidence of a direct dietary effect. · Pectin, structurally heterogeneous plant polysaccharides
    organism
    Homo sapiens
    plain_language
    Microbial products can appear in blood hours after eating pectin.
    primary_references
    [pectin-p3998144] Carbohydrate fermentation in the human colon and its relation to acetate concentrations in venous blood. (1985). https://pubmed.ncbi.nlm.nih.gov/3998144/ DOI: 10.1172/jci111847
    tissue_or_cell_type
    Venous blood

    Pectin: metabolism, signaling and nutrient connections (2026-09-17) · lines 893–904

    AI-assisted literature curation; primary study URLs and scope retained in the document and extraction. Not publisher full text. · supports · Human oral substrate challenge with blood SCFA measurements · source_derived_draft · unverified_draft

    ### pectin-blood-acetate Blood acetate began rising about six hours after pectin and remained around twice fasting levels for the following 18 hours. Condition category: normal nutrient_topic: Pectin research collection; topical membership is not evidence of a direct dietary effect. plain_language: Microbial products can appear in blood hours after eating pectin. organism: Homo sapiens tissue_or_cell_type: Venous blood experimental_model: Human oral substrate challenge with blood SCFA measurements limitations: Blood acetate is a systemic appearance measure, not a complete measure of colonic production or benefit. exposure: 20 g pectin after a 16-hour fast evidence_span: {"source_cache": "artifacts/pectin-research/3998144.abstract.txt", "locator": "Primary indexed abstract; zero-based, end-exclusive Unicode character offsets", "file_sha256": "027517b7db8dce720509f94d183d6ab4b9bb6aed84e6ace679e421a72c31c6a6", "start_char": 0, "end_char": 1849, "text_sha256": "027517b7db8dce720509f94d183d6ab4b9bb6aed84e6ace679e421a72c31c6a6"} [pectin-p3998144] Carbohydrate fermentation in the human colon and its relation to acetate concentrations in venous blood. (1985). https://pubmed.ncbi.nlm.nih.gov/3998144/ DOI: 10.1172/jci111847
    Complete structured claim and evidence

  4. Calcium balance was unchanged during the tested pectin feeding period.

    Pectin, structurally heterogeneous plant polysaccharides → Human calcium balance source_derived_draftungraded
    Experimental context and source evidence
    evidence_span
    {"source_cache": "artifacts/pectin-research/37887.abstract.txt", "locator": "Primary indexed abstract; zero-based, end-exclusive Unicode character offsets", "file_sha256": "ad5427835e84a210b32e8ceea45baeece0bc1e4488d5852a5b4244f51dc32a69", "start_char": 0, "end_char": 1141, "text_sha256": "ad5427835e84a210b32e8ceea45baeece0bc1e4488d5852a5b4244f51dc32a69"}
    experimental_model
    Controlled feeding and balance study in five healthy men
    exposure
    Nine-week protocol; 36 g/day pectin during last six weeks
    limitations
    Small older study. Disappearance from stool supported fermentation but did not assign a particular enzyme or metabolic flux.
    nutrient_topic
    Pectin research collection; topical membership is not evidence of a direct dietary effect. · Pectin, structurally heterogeneous plant polysaccharides
    organism
    Homo sapiens
    plain_language
    Mineral binding in a test tube did not imply a calcium deficit here.
    primary_references
    [pectin-p37887] The digestion of pectin in the human gut and its effect on calcium absorption and large bowel function. (1979). https://pubmed.ncbi.nlm.nih.gov/37887/ DOI: 10.1079/bjn19790062
    tissue_or_cell_type
    Whole-gut balance and stool

    Pectin: metabolism, signaling and nutrient connections (2026-09-17) · lines 750–761

    AI-assisted literature curation; primary study URLs and scope retained in the document and extraction. Not publisher full text. · supports · Controlled feeding and balance study in five healthy men · source_derived_draft · unverified_draft

    ### pectin-calcium-balance-null Calcium balance was unchanged during the tested pectin feeding period. Condition category: normal nutrient_topic: Pectin research collection; topical membership is not evidence of a direct dietary effect. plain_language: Mineral binding in a test tube did not imply a calcium deficit here. organism: Homo sapiens tissue_or_cell_type: Whole-gut balance and stool experimental_model: Controlled feeding and balance study in five healthy men limitations: Small older study. Disappearance from stool supported fermentation but did not assign a particular enzyme or metabolic flux. exposure: Nine-week protocol; 36 g/day pectin during last six weeks evidence_span: {"source_cache": "artifacts/pectin-research/37887.abstract.txt", "locator": "Primary indexed abstract; zero-based, end-exclusive Unicode character offsets", "file_sha256": "ad5427835e84a210b32e8ceea45baeece0bc1e4488d5852a5b4244f51dc32a69", "start_char": 0, "end_char": 1141, "text_sha256": "ad5427835e84a210b32e8ceea45baeece0bc1e4488d5852a5b4244f51dc32a69"} [pectin-p37887] The digestion of pectin in the human gut and its effect on calcium absorption and large bowel function. (1979). https://pubmed.ncbi.nlm.nih.gov/37887/ DOI: 10.1079/bjn19790062
    Complete structured claim and evidence

  5. Pectin was among soluble fibers that lowered beta-carotene AUC; the 33-43% range covered the soluble fibers tested.

    Pectin, structurally heterogeneous plant polysaccharides → Human post-meal plasma beta-carotene response source_derived_draftungraded
    Experimental context and source evidence
    evidence_span
    {"source_cache": "artifacts/pectin-research/10573545.abstract.txt", "locator": "Primary indexed abstract; zero-based, end-exclusive Unicode character offsets", "file_sha256": "f0828162b0e41d10d79784cea5cc96e55409b4ee80be3afc399132a7ad087332", "start_char": 0, "end_char": 1340, "text_sha256": "f0828162b0e41d10d79784cea5cc96e55409b4ee80be3afc399132a7ad087332"}
    experimental_model
    Crossover mixed-carotenoid meal study in six healthy women
    exposure
    Pectin or other fibers at 0.15 g/kg with a carotenoid and alpha-tocopherol mixture
    limitations
    Reported effect-size ranges cover multiple fibers, not one pectin-specific estimate. Plasma exposure does not establish long-term deficiency.
    nutrient_topic
    Pectin research collection; topical membership is not evidence of a direct dietary effect. · Pectin, structurally heterogeneous plant polysaccharides
    organism
    Homo sapiens
    plain_language
    Fiber type affected beta-carotene exposure.
    primary_references
    [pectin-p10573545] Some dietary fibers reduce the absorption of carotenoids in women. (1999). https://pubmed.ncbi.nlm.nih.gov/10573545/ DOI: 10.1093/jn/129.12.2170
    tissue_or_cell_type
    Plasma 24-hour area under the curve

    Pectin: metabolism, signaling and nutrient connections (2026-09-17) · lines 672–683

    AI-assisted literature curation; primary study URLs and scope retained in the document and extraction. Not publisher full text. · supports · Crossover mixed-carotenoid meal study in six healthy women · source_derived_draft · unverified_draft

    ### pectin-carotene-auc Pectin was among soluble fibers that lowered beta-carotene AUC; the 33-43% range covered the soluble fibers tested. Condition category: normal nutrient_topic: Pectin research collection; topical membership is not evidence of a direct dietary effect. plain_language: Fiber type affected beta-carotene exposure. organism: Homo sapiens tissue_or_cell_type: Plasma 24-hour area under the curve experimental_model: Crossover mixed-carotenoid meal study in six healthy women limitations: Reported effect-size ranges cover multiple fibers, not one pectin-specific estimate. Plasma exposure does not establish long-term deficiency. exposure: Pectin or other fibers at 0.15 g/kg with a carotenoid and alpha-tocopherol mixture evidence_span: {"source_cache": "artifacts/pectin-research/10573545.abstract.txt", "locator": "Primary indexed abstract; zero-based, end-exclusive Unicode character offsets", "file_sha256": "f0828162b0e41d10d79784cea5cc96e55409b4ee80be3afc399132a7ad087332", "start_char": 0, "end_char": 1340, "text_sha256": "f0828162b0e41d10d79784cea5cc96e55409b4ee80be3afc399132a7ad087332"} [pectin-p10573545] Some dietary fibers reduce the absorption of carotenoids in women. (1999). https://pubmed.ncbi.nlm.nih.gov/10573545/ DOI: 10.1093/jn/129.12.2170
    Complete structured claim and evidence

  6. The satiety finding was not accompanied by a significant CCK change.

    Pectin, structurally heterogeneous plant polysaccharides → Human plasma cholecystokinin response source_derived_draftungraded
    Experimental context and source evidence
    evidence_span
    {"source_cache": "artifacts/pectin-research/2689931.abstract.txt", "locator": "Primary indexed abstract; zero-based, end-exclusive Unicode character offsets", "file_sha256": "5f3b008530bce6948a60fde1f68eff60e2bbec7ba0cc46b4bce2e56cd8313513", "start_char": 0, "end_char": 277, "text_sha256": "5f3b008530bce6948a60fde1f68eff60e2bbec7ba0cc46b4bce2e56cd8313513"}
    experimental_model
    Meal study with scintigraphic gastric emptying
    exposure
    Pectin compared with methylcellulose; dose not resolved in indexed abstract
    limitations
    Small context-specific study; subjective satiety does not establish durable weight loss.
    nutrient_topic
    Pectin research collection; topical membership is not evidence of a direct dietary effect. · Pectin, structurally heterogeneous plant polysaccharides
    organism
    Homo sapiens
    plain_language
    The study did not identify CCK as the explanation.
    primary_references
    [pectin-p2689931] Pectin delays gastric emptying. (1989). https://pubmed.ncbi.nlm.nih.gov/2689931/ DOI: 10.1111/j.1753-4887.1989.tb02860.x
    tissue_or_cell_type
    Stomach, satiety and plasma hormones in obesity

    Pectin: metabolism, signaling and nutrient connections (2026-09-17) · lines 841–852

    AI-assisted literature curation; primary study URLs and scope retained in the document and extraction. Not publisher full text. · supports · Meal study with scintigraphic gastric emptying · source_derived_draft · unverified_draft

    ### pectin-cck-null The satiety finding was not accompanied by a significant CCK change. Condition category: normal nutrient_topic: Pectin research collection; topical membership is not evidence of a direct dietary effect. plain_language: The study did not identify CCK as the explanation. organism: Homo sapiens tissue_or_cell_type: Stomach, satiety and plasma hormones in obesity experimental_model: Meal study with scintigraphic gastric emptying limitations: Small context-specific study; subjective satiety does not establish durable weight loss. exposure: Pectin compared with methylcellulose; dose not resolved in indexed abstract evidence_span: {"source_cache": "artifacts/pectin-research/2689931.abstract.txt", "locator": "Primary indexed abstract; zero-based, end-exclusive Unicode character offsets", "file_sha256": "5f3b008530bce6948a60fde1f68eff60e2bbec7ba0cc46b4bce2e56cd8313513", "start_char": 0, "end_char": 277, "text_sha256": "5f3b008530bce6948a60fde1f68eff60e2bbec7ba0cc46b4bce2e56cd8313513"} [pectin-p2689931] Pectin delays gastric emptying. (1989). https://pubmed.ncbi.nlm.nih.gov/2689931/ DOI: 10.1111/j.1753-4887.1989.tb02860.x
    Complete structured claim and evidence

  7. Recovery in the pectin group was 59% versus 15% control on day three and 82% versus 23% on day four.

    Pectin, structurally heterogeneous plant polysaccharides → Recovery from persistent diarrhea in the specified pediatric trial source_derived_draftungraded
    Experimental context and source evidence
    evidence_span
    {"source_cache": "artifacts/pectin-research/11522739.abstract.txt", "locator": "Primary indexed abstract; zero-based, end-exclusive Unicode character offsets", "file_sha256": "955d993768cd772b8a0a137cc97e04a6e83d892f7dd430ce38b27063841b83b2", "start_char": 0, "end_char": 1414, "text_sha256": "955d993768cd772b8a0a137cc97e04a6e83d892f7dd430ce38b27063841b83b2"}
    experimental_model
    Randomized double-blind dietary trial in hospitalized infants
    exposure
    62 total: pectin19, cooked banana22, rice-control21; seven-day diets; abstract reports pectin 4 g/kg
    limitations
    Historical supervised treatment context with rehydration available. Not an instruction for infant self-treatment, an ORS replacement or proof of a particular molecular mechanism.
    nutrient_topic
    Pectin research collection; topical membership is not evidence of a direct dietary effect. · Pectin, structurally heterogeneous plant polysaccharides
    organism
    Homo sapiens
    plain_language
    This supervised dietary trial found faster recovery in the pectin group.
    primary_references
    [pectin-p11522739] Clinical studies in persistent diarrhea: dietary management with green banana or pectin in Bangladeshi children. (2001). https://pubmed.ncbi.nlm.nih.gov/11522739/ DOI: 10.1053/gast.2001.27178
    tissue_or_cell_type
    Persistent diarrhea; boys aged 5-12 months

    Pectin: metabolism, signaling and nutrient connections (2026-09-17) · lines 1127–1138

    AI-assisted literature curation; primary study URLs and scope retained in the document and extraction. Not publisher full text. · supports · Randomized double-blind dietary trial in hospitalized infants · source_derived_draft · unverified_draft

    ### pectin-diarrhea-trial Recovery in the pectin group was 59% versus 15% control on day three and 82% versus 23% on day four. Condition category: normal nutrient_topic: Pectin research collection; topical membership is not evidence of a direct dietary effect. plain_language: This supervised dietary trial found faster recovery in the pectin group. organism: Homo sapiens tissue_or_cell_type: Persistent diarrhea; boys aged 5-12 months experimental_model: Randomized double-blind dietary trial in hospitalized infants limitations: Historical supervised treatment context with rehydration available. Not an instruction for infant self-treatment, an ORS replacement or proof of a particular molecular mechanism. exposure: 62 total: pectin19, cooked banana22, rice-control21; seven-day diets; abstract reports pectin 4 g/kg evidence_span: {"source_cache": "artifacts/pectin-research/11522739.abstract.txt", "locator": "Primary indexed abstract; zero-based, end-exclusive Unicode character offsets", "file_sha256": "955d993768cd772b8a0a137cc97e04a6e83d892f7dd430ce38b27063841b83b2", "start_char": 0, "end_char": 1414, "text_sha256": "955d993768cd772b8a0a137cc97e04a6e83d892f7dd430ce38b27063841b83b2"} [pectin-p11522739] Clinical studies in persistent diarrhea: dietary management with green banana or pectin in Bangladeshi children. (2001). https://pubmed.ncbi.nlm.nih.gov/11522739/ DOI: 10.1053/gast.2001.27178
    Complete structured claim and evidence

  8. Added pectin increased SCFA generation in human fecal incubations; acetate was the major measured SCFA.

    Pectin, structurally heterogeneous plant polysaccharides → Short-chain fatty acid production in human fecal cultures source_derived_draftungraded
    Experimental context and source evidence
    evidence_span
    {"source_cache": "artifacts/pectin-research/2317475.abstract.txt", "locator": "Primary indexed abstract; zero-based, end-exclusive Unicode character offsets", "file_sha256": "86aae760cc52aeca6f270420e20dabaffa8167770fa30c7fa8e35b1f67b7d9b4", "start_char": 0, "end_char": 1642, "text_sha256": "86aae760cc52aeca6f270420e20dabaffa8167770fa30c7fa8e35b1f67b7d9b4"}
    experimental_model
    Anaerobic human fecal incubations before and after carbohydrate pre-feeding
    exposure
    Pectin and comparator carbohydrates; 48-hour incubations, up to two weeks of pre-feeding
    limitations
    Cultures lack intestinal absorption and host metabolism; results do not quantify systemic exposure.
    nutrient_topic
    Pectin research collection; topical membership is not evidence of a direct dietary effect. · Pectin, structurally heterogeneous plant polysaccharides
    organism
    Human fecal microbiota ex vivo
    plain_language
    Gut microbes can turn pectin into small organic acids.
    primary_references
    [pectin-p2317475] The effect of lactulose, pectin, arabinogalactan and cellulose on the production of organic acids and metabolism of ammonia by intestinal bacteria in a faecal incubation system. (1990). https://pubmed.ncbi.nlm.nih.gov/2317475/ DOI: 10.1079/bjn19900088
    tissue_or_cell_type
    Batch cultures

    Pectin: metabolism, signaling and nutrient connections (2026-09-17) · lines 867–878

    AI-assisted literature curation; primary study URLs and scope retained in the document and extraction. Not publisher full text. · supports · Anaerobic human fecal incubations before and after carbohydrate pre-feeding · source_derived_draft · unverified_draft

    ### pectin-fermentation-scfa Added pectin increased SCFA generation in human fecal incubations; acetate was the major measured SCFA. Condition category: normal nutrient_topic: Pectin research collection; topical membership is not evidence of a direct dietary effect. plain_language: Gut microbes can turn pectin into small organic acids. organism: Human fecal microbiota ex vivo tissue_or_cell_type: Batch cultures experimental_model: Anaerobic human fecal incubations before and after carbohydrate pre-feeding limitations: Cultures lack intestinal absorption and host metabolism; results do not quantify systemic exposure. exposure: Pectin and comparator carbohydrates; 48-hour incubations, up to two weeks of pre-feeding evidence_span: {"source_cache": "artifacts/pectin-research/2317475.abstract.txt", "locator": "Primary indexed abstract; zero-based, end-exclusive Unicode character offsets", "file_sha256": "86aae760cc52aeca6f270420e20dabaffa8167770fa30c7fa8e35b1f67b7d9b4", "start_char": 0, "end_char": 1642, "text_sha256": "86aae760cc52aeca6f270420e20dabaffa8167770fa30c7fa8e35b1f67b7d9b4"} [pectin-p2317475] The effect of lactulose, pectin, arabinogalactan and cellulose on the production of organic acids and metabolism of ammonia by intestinal bacteria in a faecal incubation system. (1990). https://pubmed.ncbi.nlm.nih.gov/2317475/ DOI: 10.1079/bjn19900088
    Complete structured claim and evidence

  9. The pectin meal delayed estimated gastric emptying relative to control.

    Pectin, structurally heterogeneous plant polysaccharides → Human gastric emptying time source_derived_draftungraded
    Experimental context and source evidence
    evidence_span
    {"source_cache": "artifacts/pectin-research/17880369.abstract.txt", "locator": "Primary indexed abstract; zero-based, end-exclusive Unicode character offsets", "file_sha256": "c07bb2fe0617daf1d3a1af1725b351e19fbfec477851697c7b575d905aa1b1c7", "start_char": 0, "end_char": 2164, "text_sha256": "c07bb2fe0617daf1d3a1af1725b351e19fbfec477851697c7b575d905aa1b1c7"}
    experimental_model
    Three-meal comparison in ten healthy men
    exposure
    450-kcal, 500-mL meal with 5.2 g pectin, agar, or control; 13C-acetate breath test
    limitations
    A gastric-emptying breath-test estimate is not direct proof of a specific glucose-enzyme inhibition.
    nutrient_topic
    Pectin research collection; topical membership is not evidence of a direct dietary effect. · Pectin, structurally heterogeneous plant polysaccharides
    organism
    Homo sapiens
    plain_language
    Food left the stomach more slowly in this experiment.
    primary_references
    [pectin-p17880369] Effects of agar and pectin on gastric emptying and post-prandial glycaemic profiles in healthy human volunteers. (2007). https://pubmed.ncbi.nlm.nih.gov/17880369/ DOI: 10.1111/j.1440-1681.2007.04706.x
    tissue_or_cell_type
    Gastric emptying and post-meal glucose

    Pectin: metabolism, signaling and nutrient connections (2026-09-17) · lines 802–813

    AI-assisted literature curation; primary study URLs and scope retained in the document and extraction. Not publisher full text. · supports · Three-meal comparison in ten healthy men · source_derived_draft · unverified_draft

    ### pectin-gastric-delay The pectin meal delayed estimated gastric emptying relative to control. Condition category: normal nutrient_topic: Pectin research collection; topical membership is not evidence of a direct dietary effect. plain_language: Food left the stomach more slowly in this experiment. organism: Homo sapiens tissue_or_cell_type: Gastric emptying and post-meal glucose experimental_model: Three-meal comparison in ten healthy men limitations: A gastric-emptying breath-test estimate is not direct proof of a specific glucose-enzyme inhibition. exposure: 450-kcal, 500-mL meal with 5.2 g pectin, agar, or control; 13C-acetate breath test evidence_span: {"source_cache": "artifacts/pectin-research/17880369.abstract.txt", "locator": "Primary indexed abstract; zero-based, end-exclusive Unicode character offsets", "file_sha256": "c07bb2fe0617daf1d3a1af1725b351e19fbfec477851697c7b575d905aa1b1c7", "start_char": 0, "end_char": 2164, "text_sha256": "c07bb2fe0617daf1d3a1af1725b351e19fbfec477851697c7b575d905aa1b1c7"} [pectin-p17880369] Effects of agar and pectin on gastric emptying and post-prandial glycaemic profiles in healthy human volunteers. (2007). https://pubmed.ncbi.nlm.nih.gov/17880369/ DOI: 10.1111/j.1440-1681.2007.04706.x
    Complete structured claim and evidence

  10. Despite slower estimated emptying, the post-meal glucose profile was not significantly changed.

    Pectin, structurally heterogeneous plant polysaccharides → Human post-meal glucose profile source_derived_draftungraded
    Experimental context and source evidence
    evidence_span
    {"source_cache": "artifacts/pectin-research/17880369.abstract.txt", "locator": "Primary indexed abstract; zero-based, end-exclusive Unicode character offsets", "file_sha256": "c07bb2fe0617daf1d3a1af1725b351e19fbfec477851697c7b575d905aa1b1c7", "start_char": 0, "end_char": 2164, "text_sha256": "c07bb2fe0617daf1d3a1af1725b351e19fbfec477851697c7b575d905aa1b1c7"}
    experimental_model
    Three-meal comparison in ten healthy men
    exposure
    450-kcal, 500-mL meal with 5.2 g pectin, agar, or control; 13C-acetate breath test
    limitations
    A gastric-emptying breath-test estimate is not direct proof of a specific glucose-enzyme inhibition.
    nutrient_topic
    Pectin research collection; topical membership is not evidence of a direct dietary effect. · Pectin, structurally heterogeneous plant polysaccharides
    organism
    Homo sapiens
    plain_language
    A slower stomach did not automatically produce a lower glucose response.
    primary_references
    [pectin-p17880369] Effects of agar and pectin on gastric emptying and post-prandial glycaemic profiles in healthy human volunteers. (2007). https://pubmed.ncbi.nlm.nih.gov/17880369/ DOI: 10.1111/j.1440-1681.2007.04706.x
    tissue_or_cell_type
    Gastric emptying and post-meal glucose

    Pectin: metabolism, signaling and nutrient connections (2026-09-17) · lines 815–826

    AI-assisted literature curation; primary study URLs and scope retained in the document and extraction. Not publisher full text. · supports · Three-meal comparison in ten healthy men · source_derived_draft · unverified_draft

    ### pectin-glucose-null Despite slower estimated emptying, the post-meal glucose profile was not significantly changed. Condition category: normal nutrient_topic: Pectin research collection; topical membership is not evidence of a direct dietary effect. plain_language: A slower stomach did not automatically produce a lower glucose response. organism: Homo sapiens tissue_or_cell_type: Gastric emptying and post-meal glucose experimental_model: Three-meal comparison in ten healthy men limitations: A gastric-emptying breath-test estimate is not direct proof of a specific glucose-enzyme inhibition. exposure: 450-kcal, 500-mL meal with 5.2 g pectin, agar, or control; 13C-acetate breath test evidence_span: {"source_cache": "artifacts/pectin-research/17880369.abstract.txt", "locator": "Primary indexed abstract; zero-based, end-exclusive Unicode character offsets", "file_sha256": "c07bb2fe0617daf1d3a1af1725b351e19fbfec477851697c7b575d905aa1b1c7", "start_char": 0, "end_char": 2164, "text_sha256": "c07bb2fe0617daf1d3a1af1725b351e19fbfec477851697c7b575d905aa1b1c7"} [pectin-p17880369] Effects of agar and pectin on gastric emptying and post-prandial glycaemic profiles in healthy human volunteers. (2007). https://pubmed.ncbi.nlm.nih.gov/17880369/ DOI: 10.1111/j.1440-1681.2007.04706.x
    Complete structured claim and evidence

  11. Pectin reduced inorganic iron fractional absorption in the hemochromatosis group, whereas cellulose did not show the same result.

    Pectin, structurally heterogeneous plant polysaccharides → Nonheme iron absorption source_derived_draftungraded
    Experimental context and source evidence
    evidence_span
    {"source_cache": "artifacts/pectin-research/6247906.abstract.txt", "locator": "Primary indexed abstract; zero-based, end-exclusive Unicode character offsets", "file_sha256": "2c107283e705511284aaecb49a765185e48f825963c872c6306d76f9cf4565cf", "start_char": 0, "end_char": 1307, "text_sha256": "2c107283e705511284aaecb49a765185e48f825963c872c6306d76f9cf4565cf"}
    experimental_model
    Tracer study in idiopathic hemochromatosis with in-vitro binding comparison
    exposure
    13 patients: pectin in eight, cellulose in five; 9 g/m2, own fasting controls; seven healthy basal comparators
    limitations
    Disease-specific small experiment; not a treatment recommendation or a universal effect of all fruit.
    nutrient_topic
    Pectin research collection; topical membership is not evidence of a direct dietary effect. · Pectin, structurally heterogeneous plant polysaccharides
    organism
    Homo sapiens; cell-free binding assay separately scoped
    plain_language
    Pectin can lower absorbed iron under these tested conditions.
    primary_references
    [pectin-p6247906] Evidence and mechanism for pectin-reduced intestinal inorganic iron absorption in idiopathic hemochromatosis. (1980). https://pubmed.ncbi.nlm.nih.gov/6247906/ DOI: 10.1093/ajcn/33.6.1225
    tissue_or_cell_type
    Intestinal inorganic iron absorption

    Pectin: metabolism, signaling and nutrient connections (2026-09-17) · lines 633–644

    AI-assisted literature curation; primary study URLs and scope retained in the document and extraction. Not publisher full text. · supports · Tracer study in idiopathic hemochromatosis with in-vitro binding comparison · source_derived_draft · unverified_draft

    ### pectin-iron-absorption Pectin reduced inorganic iron fractional absorption in the hemochromatosis group, whereas cellulose did not show the same result. Condition category: normal nutrient_topic: Pectin research collection; topical membership is not evidence of a direct dietary effect. plain_language: Pectin can lower absorbed iron under these tested conditions. organism: Homo sapiens; cell-free binding assay separately scoped tissue_or_cell_type: Intestinal inorganic iron absorption experimental_model: Tracer study in idiopathic hemochromatosis with in-vitro binding comparison limitations: Disease-specific small experiment; not a treatment recommendation or a universal effect of all fruit. exposure: 13 patients: pectin in eight, cellulose in five; 9 g/m2, own fasting controls; seven healthy basal comparators evidence_span: {"source_cache": "artifacts/pectin-research/6247906.abstract.txt", "locator": "Primary indexed abstract; zero-based, end-exclusive Unicode character offsets", "file_sha256": "2c107283e705511284aaecb49a765185e48f825963c872c6306d76f9cf4565cf", "start_char": 0, "end_char": 1307, "text_sha256": "2c107283e705511284aaecb49a765185e48f825963c872c6306d76f9cf4565cf"} [pectin-p6247906] Evidence and mechanism for pectin-reduced intestinal inorganic iron absorption in idiopathic hemochromatosis. (1980). https://pubmed.ncbi.nlm.nih.gov/6247906/ DOI: 10.1093/ajcn/33.6.1225
    Complete structured claim and evidence

  12. In-vitro pectin iron-binding capacity increased with pectin exposure; cellulose lacked the comparable binding response.

    Pectin, structurally heterogeneous plant polysaccharides → Pectin binding to inorganic iron in vitro source_derived_draftungraded
    Experimental context and source evidence
    evidence_span
    {"source_cache": "artifacts/pectin-research/6247906.abstract.txt", "locator": "Primary indexed abstract; zero-based, end-exclusive Unicode character offsets", "file_sha256": "2c107283e705511284aaecb49a765185e48f825963c872c6306d76f9cf4565cf", "start_char": 0, "end_char": 1307, "text_sha256": "2c107283e705511284aaecb49a765185e48f825963c872c6306d76f9cf4565cf"}
    experimental_model
    Tracer study in idiopathic hemochromatosis with in-vitro binding comparison
    exposure
    13 patients: pectin in eight, cellulose in five; 9 g/m2, own fasting controls; seven healthy basal comparators
    limitations
    Disease-specific small experiment; not a treatment recommendation or a universal effect of all fruit.
    nutrient_topic
    Pectin research collection; topical membership is not evidence of a direct dietary effect. · Pectin, structurally heterogeneous plant polysaccharides
    organism
    Cell-free assay
    plain_language
    Binding provides a candidate explanation for the absorption finding.
    primary_references
    [pectin-p6247906] Evidence and mechanism for pectin-reduced intestinal inorganic iron absorption in idiopathic hemochromatosis. (1980). https://pubmed.ncbi.nlm.nih.gov/6247906/ DOI: 10.1093/ajcn/33.6.1225
    tissue_or_cell_type
    In-vitro binding system

    Pectin: metabolism, signaling and nutrient connections (2026-09-17) · lines 646–657

    AI-assisted literature curation; primary study URLs and scope retained in the document and extraction. Not publisher full text. · supports · Tracer study in idiopathic hemochromatosis with in-vitro binding comparison · source_derived_draft · unverified_draft

    ### pectin-iron-complex In-vitro pectin iron-binding capacity increased with pectin exposure; cellulose lacked the comparable binding response. Condition category: normal nutrient_topic: Pectin research collection; topical membership is not evidence of a direct dietary effect. plain_language: Binding provides a candidate explanation for the absorption finding. organism: Cell-free assay tissue_or_cell_type: In-vitro binding system experimental_model: Tracer study in idiopathic hemochromatosis with in-vitro binding comparison limitations: Disease-specific small experiment; not a treatment recommendation or a universal effect of all fruit. exposure: 13 patients: pectin in eight, cellulose in five; 9 g/m2, own fasting controls; seven healthy basal comparators evidence_span: {"source_cache": "artifacts/pectin-research/6247906.abstract.txt", "locator": "Primary indexed abstract; zero-based, end-exclusive Unicode character offsets", "file_sha256": "2c107283e705511284aaecb49a765185e48f825963c872c6306d76f9cf4565cf", "start_char": 0, "end_char": 1307, "text_sha256": "2c107283e705511284aaecb49a765185e48f825963c872c6306d76f9cf4565cf"} [pectin-p6247906] Evidence and mechanism for pectin-reduced intestinal inorganic iron absorption in idiopathic hemochromatosis. (1980). https://pubmed.ncbi.nlm.nih.gov/6247906/ DOI: 10.1093/ajcn/33.6.1225
    Complete structured claim and evidence

  13. Lutein AUC was reduced with the tested fibers, including pectin.

    Pectin, structurally heterogeneous plant polysaccharides → Human post-meal plasma lutein response source_derived_draftungraded
    Experimental context and source evidence
    evidence_span
    {"source_cache": "artifacts/pectin-research/10573545.abstract.txt", "locator": "Primary indexed abstract; zero-based, end-exclusive Unicode character offsets", "file_sha256": "f0828162b0e41d10d79784cea5cc96e55409b4ee80be3afc399132a7ad087332", "start_char": 0, "end_char": 1340, "text_sha256": "f0828162b0e41d10d79784cea5cc96e55409b4ee80be3afc399132a7ad087332"}
    experimental_model
    Crossover mixed-carotenoid meal study in six healthy women
    exposure
    Pectin or other fibers at 0.15 g/kg with a carotenoid and alpha-tocopherol mixture
    limitations
    Reported effect-size ranges cover multiple fibers, not one pectin-specific estimate. Plasma exposure does not establish long-term deficiency.
    nutrient_topic
    Pectin research collection; topical membership is not evidence of a direct dietary effect. · Pectin, structurally heterogeneous plant polysaccharides
    organism
    Homo sapiens
    plain_language
    The finding also involved lutein.
    primary_references
    [pectin-p10573545] Some dietary fibers reduce the absorption of carotenoids in women. (1999). https://pubmed.ncbi.nlm.nih.gov/10573545/ DOI: 10.1093/jn/129.12.2170
    tissue_or_cell_type
    Plasma 24-hour area under the curve

    Pectin: metabolism, signaling and nutrient connections (2026-09-17) · lines 698–709

    AI-assisted literature curation; primary study URLs and scope retained in the document and extraction. Not publisher full text. · supports · Crossover mixed-carotenoid meal study in six healthy women · source_derived_draft · unverified_draft

    ### pectin-lutein-auc Lutein AUC was reduced with the tested fibers, including pectin. Condition category: normal nutrient_topic: Pectin research collection; topical membership is not evidence of a direct dietary effect. plain_language: The finding also involved lutein. organism: Homo sapiens tissue_or_cell_type: Plasma 24-hour area under the curve experimental_model: Crossover mixed-carotenoid meal study in six healthy women limitations: Reported effect-size ranges cover multiple fibers, not one pectin-specific estimate. Plasma exposure does not establish long-term deficiency. exposure: Pectin or other fibers at 0.15 g/kg with a carotenoid and alpha-tocopherol mixture evidence_span: {"source_cache": "artifacts/pectin-research/10573545.abstract.txt", "locator": "Primary indexed abstract; zero-based, end-exclusive Unicode character offsets", "file_sha256": "f0828162b0e41d10d79784cea5cc96e55409b4ee80be3afc399132a7ad087332", "start_char": 0, "end_char": 1340, "text_sha256": "f0828162b0e41d10d79784cea5cc96e55409b4ee80be3afc399132a7ad087332"} [pectin-p10573545] Some dietary fibers reduce the absorption of carotenoids in women. (1999). https://pubmed.ncbi.nlm.nih.gov/10573545/ DOI: 10.1093/jn/129.12.2170
    Complete structured claim and evidence

  14. Lycopene AUC was reduced with the tested fibers, including pectin; the multi-fiber effect range is not a pectin-specific number.

    Pectin, structurally heterogeneous plant polysaccharides → Human post-meal plasma lycopene response source_derived_draftungraded
    Experimental context and source evidence
    evidence_span
    {"source_cache": "artifacts/pectin-research/10573545.abstract.txt", "locator": "Primary indexed abstract; zero-based, end-exclusive Unicode character offsets", "file_sha256": "f0828162b0e41d10d79784cea5cc96e55409b4ee80be3afc399132a7ad087332", "start_char": 0, "end_char": 1340, "text_sha256": "f0828162b0e41d10d79784cea5cc96e55409b4ee80be3afc399132a7ad087332"}
    experimental_model
    Crossover mixed-carotenoid meal study in six healthy women
    exposure
    Pectin or other fibers at 0.15 g/kg with a carotenoid and alpha-tocopherol mixture
    limitations
    Reported effect-size ranges cover multiple fibers, not one pectin-specific estimate. Plasma exposure does not establish long-term deficiency.
    nutrient_topic
    Pectin research collection; topical membership is not evidence of a direct dietary effect. · Pectin, structurally heterogeneous plant polysaccharides
    organism
    Homo sapiens
    plain_language
    Pectin was associated with a smaller lycopene response.
    primary_references
    [pectin-p10573545] Some dietary fibers reduce the absorption of carotenoids in women. (1999). https://pubmed.ncbi.nlm.nih.gov/10573545/ DOI: 10.1093/jn/129.12.2170
    tissue_or_cell_type
    Plasma 24-hour area under the curve

    Pectin: metabolism, signaling and nutrient connections (2026-09-17) · lines 685–696

    AI-assisted literature curation; primary study URLs and scope retained in the document and extraction. Not publisher full text. · supports · Crossover mixed-carotenoid meal study in six healthy women · source_derived_draft · unverified_draft

    ### pectin-lycopene-auc Lycopene AUC was reduced with the tested fibers, including pectin; the multi-fiber effect range is not a pectin-specific number. Condition category: normal nutrient_topic: Pectin research collection; topical membership is not evidence of a direct dietary effect. plain_language: Pectin was associated with a smaller lycopene response. organism: Homo sapiens tissue_or_cell_type: Plasma 24-hour area under the curve experimental_model: Crossover mixed-carotenoid meal study in six healthy women limitations: Reported effect-size ranges cover multiple fibers, not one pectin-specific estimate. Plasma exposure does not establish long-term deficiency. exposure: Pectin or other fibers at 0.15 g/kg with a carotenoid and alpha-tocopherol mixture evidence_span: {"source_cache": "artifacts/pectin-research/10573545.abstract.txt", "locator": "Primary indexed abstract; zero-based, end-exclusive Unicode character offsets", "file_sha256": "f0828162b0e41d10d79784cea5cc96e55409b4ee80be3afc399132a7ad087332", "start_char": 0, "end_char": 1340, "text_sha256": "f0828162b0e41d10d79784cea5cc96e55409b4ee80be3afc399132a7ad087332"} [pectin-p10573545] Some dietary fibers reduce the absorption of carotenoids in women. (1999). https://pubmed.ncbi.nlm.nih.gov/10573545/ DOI: 10.1093/jn/129.12.2170
    Complete structured claim and evidence

  15. Pancreatic polypeptide was not significantly changed.

    Pectin, structurally heterogeneous plant polysaccharides → Human plasma pancreatic polypeptide response source_derived_draftungraded
    Experimental context and source evidence
    evidence_span
    {"source_cache": "artifacts/pectin-research/2689931.abstract.txt", "locator": "Primary indexed abstract; zero-based, end-exclusive Unicode character offsets", "file_sha256": "5f3b008530bce6948a60fde1f68eff60e2bbec7ba0cc46b4bce2e56cd8313513", "start_char": 0, "end_char": 277, "text_sha256": "5f3b008530bce6948a60fde1f68eff60e2bbec7ba0cc46b4bce2e56cd8313513"}
    experimental_model
    Meal study with scintigraphic gastric emptying
    exposure
    Pectin compared with methylcellulose; dose not resolved in indexed abstract
    limitations
    Small context-specific study; subjective satiety does not establish durable weight loss.
    nutrient_topic
    Pectin research collection; topical membership is not evidence of a direct dietary effect. · Pectin, structurally heterogeneous plant polysaccharides
    organism
    Homo sapiens
    plain_language
    This second measured hormone did not explain the satiety result.
    primary_references
    [pectin-p2689931] Pectin delays gastric emptying. (1989). https://pubmed.ncbi.nlm.nih.gov/2689931/ DOI: 10.1111/j.1753-4887.1989.tb02860.x
    tissue_or_cell_type
    Stomach, satiety and plasma hormones in obesity

    Pectin: metabolism, signaling and nutrient connections (2026-09-17) · lines 854–865

    AI-assisted literature curation; primary study URLs and scope retained in the document and extraction. Not publisher full text. · supports · Meal study with scintigraphic gastric emptying · source_derived_draft · unverified_draft

    ### pectin-pp-null Pancreatic polypeptide was not significantly changed. Condition category: normal nutrient_topic: Pectin research collection; topical membership is not evidence of a direct dietary effect. plain_language: This second measured hormone did not explain the satiety result. organism: Homo sapiens tissue_or_cell_type: Stomach, satiety and plasma hormones in obesity experimental_model: Meal study with scintigraphic gastric emptying limitations: Small context-specific study; subjective satiety does not establish durable weight loss. exposure: Pectin compared with methylcellulose; dose not resolved in indexed abstract evidence_span: {"source_cache": "artifacts/pectin-research/2689931.abstract.txt", "locator": "Primary indexed abstract; zero-based, end-exclusive Unicode character offsets", "file_sha256": "5f3b008530bce6948a60fde1f68eff60e2bbec7ba0cc46b4bce2e56cd8313513", "start_char": 0, "end_char": 277, "text_sha256": "5f3b008530bce6948a60fde1f68eff60e2bbec7ba0cc46b4bce2e56cd8313513"} [pectin-p2689931] Pectin delays gastric emptying. (1989). https://pubmed.ncbi.nlm.nih.gov/2689931/ DOI: 10.1111/j.1753-4887.1989.tb02860.x
    Complete structured claim and evidence

  16. The growth patterns suggested use of both backbone- and side-chain-derived products by R. intestinalis M50/1.

    Pectin, structurally heterogeneous plant polysaccharides → Roseburia intestinalis M50/1 source_derived_draftungraded
    Experimental context and source evidence
    evidence_span
    {"source_cache": "artifacts/pectin-research/40439696.abstract.txt", "locator": "Primary indexed abstract; zero-based, end-exclusive Unicode character offsets", "file_sha256": "40b7f781968c7c518a5e367801c9d2b71aee4cf5c57d04bc51178e57c4bc8bf8", "start_char": 0, "end_char": 1667, "text_sha256": "40b7f781968c7c518a5e367801c9d2b71aee4cf5c57d04bc51178e57c4bc8bf8"}
    experimental_model
    23 human gut bacterial isolates and synthetic co-cultures
    exposure
    Pectins from different plant sources
    limitations
    Growth and inferred cross-feeding do not measure clinical benefit; strain competition depends on culture and substrate.
    nutrient_topic
    Pectin research collection; topical membership is not evidence of a direct dietary effect. · Pectin, structurally heterogeneous plant polysaccharides
    organism
    Specified bacterial strains isolated from humans
    plain_language
    Some bacteria benefit from fragments released by other bacteria.
    primary_references
    [pectin-p40439696] Roles of human colonic bacteria in pectin utilization and associated cross-feeding networks revealed using synthetic co-cultures. (2025). https://pubmed.ncbi.nlm.nih.gov/40439696/ DOI: 10.1099/mic.0.001559
    tissue_or_cell_type
    Anaerobic culture

    Pectin: metabolism, signaling and nutrient connections (2026-09-17) · lines 971–982

    AI-assisted literature curation; primary study URLs and scope retained in the document and extraction. Not publisher full text. · supports · 23 human gut bacterial isolates and synthetic co-cultures · source_derived_draft · unverified_draft

    ### pectin-roseburia-crossfeeding The growth patterns suggested use of both backbone- and side-chain-derived products by R. intestinalis M50/1. Condition category: normal nutrient_topic: Pectin research collection; topical membership is not evidence of a direct dietary effect. plain_language: Some bacteria benefit from fragments released by other bacteria. organism: Specified bacterial strains isolated from humans tissue_or_cell_type: Anaerobic culture experimental_model: 23 human gut bacterial isolates and synthetic co-cultures limitations: Growth and inferred cross-feeding do not measure clinical benefit; strain competition depends on culture and substrate. exposure: Pectins from different plant sources evidence_span: {"source_cache": "artifacts/pectin-research/40439696.abstract.txt", "locator": "Primary indexed abstract; zero-based, end-exclusive Unicode character offsets", "file_sha256": "40b7f781968c7c518a5e367801c9d2b71aee4cf5c57d04bc51178e57c4bc8bf8", "start_char": 0, "end_char": 1667, "text_sha256": "40b7f781968c7c518a5e367801c9d2b71aee4cf5c57d04bc51178e57c4bc8bf8"} [pectin-p40439696] Roles of human colonic bacteria in pectin utilization and associated cross-feeding networks revealed using synthetic co-cultures. (2025). https://pubmed.ncbi.nlm.nih.gov/40439696/ DOI: 10.1099/mic.0.001559
    Complete structured claim and evidence

  17. Pectin was associated with increased reported satiety in this experiment.

    Pectin, structurally heterogeneous plant polysaccharides → Human subjective satiety source_derived_draftungraded
    Experimental context and source evidence
    evidence_span
    {"source_cache": "artifacts/pectin-research/2689931.abstract.txt", "locator": "Primary indexed abstract; zero-based, end-exclusive Unicode character offsets", "file_sha256": "5f3b008530bce6948a60fde1f68eff60e2bbec7ba0cc46b4bce2e56cd8313513", "start_char": 0, "end_char": 277, "text_sha256": "5f3b008530bce6948a60fde1f68eff60e2bbec7ba0cc46b4bce2e56cd8313513"}
    experimental_model
    Meal study with scintigraphic gastric emptying
    exposure
    Pectin compared with methylcellulose; dose not resolved in indexed abstract
    limitations
    Small context-specific study; subjective satiety does not establish durable weight loss.
    nutrient_topic
    Pectin research collection; topical membership is not evidence of a direct dietary effect. · Pectin, structurally heterogeneous plant polysaccharides
    organism
    Homo sapiens
    plain_language
    Participants reported feeling fuller.
    primary_references
    [pectin-p2689931] Pectin delays gastric emptying. (1989). https://pubmed.ncbi.nlm.nih.gov/2689931/ DOI: 10.1111/j.1753-4887.1989.tb02860.x
    tissue_or_cell_type
    Stomach, satiety and plasma hormones in obesity

    Pectin: metabolism, signaling and nutrient connections (2026-09-17) · lines 828–839

    AI-assisted literature curation; primary study URLs and scope retained in the document and extraction. Not publisher full text. · supports · Meal study with scintigraphic gastric emptying · source_derived_draft · unverified_draft

    ### pectin-satiety Pectin was associated with increased reported satiety in this experiment. Condition category: normal nutrient_topic: Pectin research collection; topical membership is not evidence of a direct dietary effect. plain_language: Participants reported feeling fuller. organism: Homo sapiens tissue_or_cell_type: Stomach, satiety and plasma hormones in obesity experimental_model: Meal study with scintigraphic gastric emptying limitations: Small context-specific study; subjective satiety does not establish durable weight loss. exposure: Pectin compared with methylcellulose; dose not resolved in indexed abstract evidence_span: {"source_cache": "artifacts/pectin-research/2689931.abstract.txt", "locator": "Primary indexed abstract; zero-based, end-exclusive Unicode character offsets", "file_sha256": "5f3b008530bce6948a60fde1f68eff60e2bbec7ba0cc46b4bce2e56cd8313513", "start_char": 0, "end_char": 277, "text_sha256": "5f3b008530bce6948a60fde1f68eff60e2bbec7ba0cc46b4bce2e56cd8313513"} [pectin-p2689931] Pectin delays gastric emptying. (1989). https://pubmed.ncbi.nlm.nih.gov/2689931/ DOI: 10.1111/j.1753-4887.1989.tb02860.x
    Complete structured claim and evidence

  18. Stool wet weight rose by 33% during pectin feeding.

    Pectin, structurally heterogeneous plant polysaccharides → Human stool wet weight source_derived_draftungraded
    Experimental context and source evidence
    evidence_span
    {"source_cache": "artifacts/pectin-research/37887.abstract.txt", "locator": "Primary indexed abstract; zero-based, end-exclusive Unicode character offsets", "file_sha256": "ad5427835e84a210b32e8ceea45baeece0bc1e4488d5852a5b4244f51dc32a69", "start_char": 0, "end_char": 1141, "text_sha256": "ad5427835e84a210b32e8ceea45baeece0bc1e4488d5852a5b4244f51dc32a69"}
    experimental_model
    Controlled feeding and balance study in five healthy men
    exposure
    Nine-week protocol; 36 g/day pectin during last six weeks
    limitations
    Small older study. Disappearance from stool supported fermentation but did not assign a particular enzyme or metabolic flux.
    nutrient_topic
    Pectin research collection; topical membership is not evidence of a direct dietary effect. · Pectin, structurally heterogeneous plant polysaccharides
    organism
    Homo sapiens
    plain_language
    More material and water were passed in stool.
    primary_references
    [pectin-p37887] The digestion of pectin in the human gut and its effect on calcium absorption and large bowel function. (1979). https://pubmed.ncbi.nlm.nih.gov/37887/ DOI: 10.1079/bjn19790062
    tissue_or_cell_type
    Whole-gut balance and stool

    Pectin: metabolism, signaling and nutrient connections (2026-09-17) · lines 724–735

    AI-assisted literature curation; primary study URLs and scope retained in the document and extraction. Not publisher full text. · supports · Controlled feeding and balance study in five healthy men · source_derived_draft · unverified_draft

    ### pectin-stool-weight Stool wet weight rose by 33% during pectin feeding. Condition category: normal nutrient_topic: Pectin research collection; topical membership is not evidence of a direct dietary effect. plain_language: More material and water were passed in stool. organism: Homo sapiens tissue_or_cell_type: Whole-gut balance and stool experimental_model: Controlled feeding and balance study in five healthy men limitations: Small older study. Disappearance from stool supported fermentation but did not assign a particular enzyme or metabolic flux. exposure: Nine-week protocol; 36 g/day pectin during last six weeks evidence_span: {"source_cache": "artifacts/pectin-research/37887.abstract.txt", "locator": "Primary indexed abstract; zero-based, end-exclusive Unicode character offsets", "file_sha256": "ad5427835e84a210b32e8ceea45baeece0bc1e4488d5852a5b4244f51dc32a69", "start_char": 0, "end_char": 1141, "text_sha256": "ad5427835e84a210b32e8ceea45baeece0bc1e4488d5852a5b4244f51dc32a69"} [pectin-p37887] The digestion of pectin in the human gut and its effect on calcium absorption and large bowel function. (1979). https://pubmed.ncbi.nlm.nih.gov/37887/ DOI: 10.1079/bjn19790062
    Complete structured claim and evidence

  19. Alpha-tocopherol AUC was not significantly affected by the tested fibers.

    Pectin, structurally heterogeneous plant polysaccharides → Human post-meal plasma alpha-tocopherol response source_derived_draftungraded
    Experimental context and source evidence
    evidence_span
    {"source_cache": "artifacts/pectin-research/10573545.abstract.txt", "locator": "Primary indexed abstract; zero-based, end-exclusive Unicode character offsets", "file_sha256": "f0828162b0e41d10d79784cea5cc96e55409b4ee80be3afc399132a7ad087332", "start_char": 0, "end_char": 1340, "text_sha256": "f0828162b0e41d10d79784cea5cc96e55409b4ee80be3afc399132a7ad087332"}
    experimental_model
    Crossover mixed-carotenoid meal study in six healthy women
    exposure
    Pectin or other fibers at 0.15 g/kg with a carotenoid and alpha-tocopherol mixture
    limitations
    Reported effect-size ranges cover multiple fibers, not one pectin-specific estimate. Plasma exposure does not establish long-term deficiency.
    nutrient_topic
    Pectin research collection; topical membership is not evidence of a direct dietary effect. · Pectin, structurally heterogeneous plant polysaccharides
    organism
    Homo sapiens
    plain_language
    This study did not show the same reduction for vitamin E.
    primary_references
    [pectin-p10573545] Some dietary fibers reduce the absorption of carotenoids in women. (1999). https://pubmed.ncbi.nlm.nih.gov/10573545/ DOI: 10.1093/jn/129.12.2170
    tissue_or_cell_type
    Plasma 24-hour area under the curve

    Pectin: metabolism, signaling and nutrient connections (2026-09-17) · lines 711–722

    AI-assisted literature curation; primary study URLs and scope retained in the document and extraction. Not publisher full text. · supports · Crossover mixed-carotenoid meal study in six healthy women · source_derived_draft · unverified_draft

    ### pectin-vitamin-e-null Alpha-tocopherol AUC was not significantly affected by the tested fibers. Condition category: normal nutrient_topic: Pectin research collection; topical membership is not evidence of a direct dietary effect. plain_language: This study did not show the same reduction for vitamin E. organism: Homo sapiens tissue_or_cell_type: Plasma 24-hour area under the curve experimental_model: Crossover mixed-carotenoid meal study in six healthy women limitations: Reported effect-size ranges cover multiple fibers, not one pectin-specific estimate. Plasma exposure does not establish long-term deficiency. exposure: Pectin or other fibers at 0.15 g/kg with a carotenoid and alpha-tocopherol mixture evidence_span: {"source_cache": "artifacts/pectin-research/10573545.abstract.txt", "locator": "Primary indexed abstract; zero-based, end-exclusive Unicode character offsets", "file_sha256": "f0828162b0e41d10d79784cea5cc96e55409b4ee80be3afc399132a7ad087332", "start_char": 0, "end_char": 1340, "text_sha256": "f0828162b0e41d10d79784cea5cc96e55409b4ee80be3afc399132a7ad087332"} [pectin-p10573545] Some dietary fibers reduce the absorption of carotenoids in women. (1999). https://pubmed.ncbi.nlm.nih.gov/10573545/ DOI: 10.1093/jn/129.12.2170
    Complete structured claim and evidence

Where it participates (unsigned role)

  1. The spray-dried cashew-pectin system encapsulated mangiferin with reported efficiency of 82.02%.

    Cashew apple pectin, preparation specified by study → Mangiferin source_derived_draftungraded
    Experimental context and source evidence
    evidence_span
    {"source_cache": "artifacts/mangiferin-research/33422511.abstract.txt", "locator": "Primary indexed abstract; zero-based, end-exclusive Unicode character offsets", "file_sha256": "94f03b6027f5e127135766a609b273a2ba7347687f229c99c4357f21f91b1aa2", "start_char": 0, "end_char": 922, "text_sha256": "94f03b6027f5e127135766a609b273a2ba7347687f229c99c4357f21f91b1aa2"}
    experimental_model
    Formulation characterization, release testing and isolated human-neutrophil evaluation
    exposure
    Spray-dried cashew-apple pectin and mangiferin; release media at specified pH
    limitations
    No oral human bioavailability result; matrix behavior cannot be generalized to eating pectin with mangiferin.
    nutrient_topic
    Mangiferin research collection; topical membership is not evidence of a direct dietary effect. · Mangiferin
    organism
    Material system and human cells
    plain_language
    Pectin can serve as a delivery material in a deliberately prepared formulation.
    primary_references
    [mangiferin-p33422511] Cashew apple pectin as a carrier matrix for mangiferin: Physicochemical characterization, in vitro release and biological evaluation in human neutrophils. (2021). https://pubmed.ncbi.nlm.nih.gov/33422511/ DOI: 10.1016/j.ijbiomac.2021.01.001
    tissue_or_cell_type
    Pectin matrix and neutrophils

    Mangiferin: metabolism, signaling and nutrient connections (2026-09-17) · lines 275–286

    AI-assisted literature curation; primary study URLs and scope retained in the document and extraction. Not publisher full text. · supports · Formulation characterization, release testing and isolated human-neutrophil evaluation · source_derived_draft · unverified_draft

    ### mangiferin-pectin-matrix The spray-dried cashew-pectin system encapsulated mangiferin with reported efficiency of 82.02%. Condition category: normal nutrient_topic: Mangiferin research collection; topical membership is not evidence of a direct dietary effect. plain_language: Pectin can serve as a delivery material in a deliberately prepared formulation. organism: Material system and human cells tissue_or_cell_type: Pectin matrix and neutrophils experimental_model: Formulation characterization, release testing and isolated human-neutrophil evaluation limitations: No oral human bioavailability result; matrix behavior cannot be generalized to eating pectin with mangiferin. exposure: Spray-dried cashew-apple pectin and mangiferin; release media at specified pH evidence_span: {"source_cache": "artifacts/mangiferin-research/33422511.abstract.txt", "locator": "Primary indexed abstract; zero-based, end-exclusive Unicode character offsets", "file_sha256": "94f03b6027f5e127135766a609b273a2ba7347687f229c99c4357f21f91b1aa2", "start_char": 0, "end_char": 922, "text_sha256": "94f03b6027f5e127135766a609b273a2ba7347687f229c99c4357f21f91b1aa2"} [mangiferin-p33422511] Cashew apple pectin as a carrier matrix for mangiferin: Physicochemical characterization, in vitro release and biological evaluation in human neutrophils. (2021). https://pubmed.ncbi.nlm.nih.gov/33422511/ DOI: 10.1016/j.ijbiomac.2021.01.001
    Complete structured claim and evidence

In the sources

Preserved passages that mention this component, quoted exactly. Open one to read it in context.

    This is a research prototype built from draft material. It is not medical advice, and its statements still await verification against the original studies.

    Evidence, AI assistance and curation standards