Component
Human fecal microbiota composition
Human fecal microbiota composition. Species, exposure and limitations are retained in each linked claim.
1 recorded relationships. Experimental role, claim status and evidence remain attached to each record.
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.
Other things that act on it
Enzymes, hormones, genes, and other components with a recorded effect. These are not nutrients, so they do not count toward the arrows above. Each finding names the chapter that recorded it.
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.
What acts on it
The intervention did not significantly alter the measured fecal microbiota profiles.
Experimental context and source evidence
- evidence_span
- {"source_cache": "artifacts/pectin-research/31547291.abstract.txt", "locator": "Primary indexed abstract; zero-based, end-exclusive Unicode character offsets", "file_sha256": "cd2a4b1f6d299d573d8ea5077447bc45c8d8c6da58fa25c7835f01c5488d9db4", "start_char": 0, "end_char": 1451, "text_sha256": "cd2a4b1f6d299d573d8ea5077447bc45c8d8c6da58fa25c7835f01c5488d9db4"}
- experimental_model
- Randomized placebo-controlled feeding; young and older healthy adults
- exposure
- 15 g/day sugar beet pectin versus maltodextrin for four weeks
- limitations
- Related analysis of the same cohort as PMID31324040, not an independent replication. Fecal concentration is not production 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
- Laboratory cross-feeding does not guarantee a detectable stool-community change.
- primary_references
- [pectin-p31547291] Sugar Beet Pectin Supplementation Did Not Alter Profiles of Fecal Microbiota and Exhaled Breath in Healthy Young Adults and Healthy Elderly. (2019). https://pubmed.ncbi.nlm.nih.gov/31547291/ DOI: 10.3390/nu11092193
- tissue_or_cell_type
- Feces and microbial profiling
Pectin: metabolism, signaling and nutrient connections (2026-09-17) · lines 997–1008
AI-assisted literature curation; primary study URLs and scope retained in the document and extraction. Not publisher full text. · supports · Randomized placebo-controlled feeding; young and older healthy adults · source_derived_draft · unverified_draft
### pectin-human-microbiota-null The intervention did not significantly alter the measured fecal microbiota profiles. Condition category: normal nutrient_topic: Pectin research collection; topical membership is not evidence of a direct dietary effect. plain_language: Laboratory cross-feeding does not guarantee a detectable stool-community change. organism: Homo sapiens tissue_or_cell_type: Feces and microbial profiling experimental_model: Randomized placebo-controlled feeding; young and older healthy adults limitations: Related analysis of the same cohort as PMID31324040, not an independent replication. Fecal concentration is not production flux. exposure: 15 g/day sugar beet pectin versus maltodextrin for four weeks evidence_span: {"source_cache": "artifacts/pectin-research/31547291.abstract.txt", "locator": "Primary indexed abstract; zero-based, end-exclusive Unicode character offsets", "file_sha256": "cd2a4b1f6d299d573d8ea5077447bc45c8d8c6da58fa25c7835f01c5488d9db4", "start_char": 0, "end_char": 1451, "text_sha256": "cd2a4b1f6d299d573d8ea5077447bc45c8d8c6da58fa25c7835f01c5488d9db4"} [pectin-p31547291] Sugar Beet Pectin Supplementation Did Not Alter Profiles of Fecal Microbiota and Exhaled Breath in Healthy Young Adults and Healthy Elderly. (2019). https://pubmed.ncbi.nlm.nih.gov/31547291/ DOI: 10.3390/nu11092193
Complete structured claim and evidence
The events it takes part in
A mechanism often involves more than two components. These are the full events, with every participant and its role.
Situations it appears in
Low-supply and faulty-machinery situations recorded in the chapters where this component plays a part.
In the sources
Preserved passages that mention this component, quoted exactly. Open one to read it in context.
Open hypotheses
Proposed ideas that involve this component. They are labeled as hypotheses and do not change any recorded statement.
This is a research prototype built from draft material. It is not medical advice, and its statements still await verification against the original studies.