Component
Hydroxyl-radical generation in the specified assay
Hydroxyl-radical generation in the specified assay. Species, exposure and limitations are retained in each linked claim.
2 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 ferric CGA complex did not support Fenton-type hydroxyl-radical generation under the tested conditions.
Experimental context and source evidence
- evidence_span
- {"source_cache": "artifacts/chlorogenic_acid-research/9501514.abstract.txt", "locator": "Primary indexed abstract; zero-based, end-exclusive Unicode character offsets", "file_sha256": "eb573ad7da5b27974eff1c3a31d52becf53a72ffe3216703743aab82eacef1b7", "start_char": 0, "end_char": 797, "text_sha256": "eb573ad7da5b27974eff1c3a31d52becf53a72ffe3216703743aab82eacef1b7"}
- experimental_model
- Spectroscopy, ESR, NMR and iron-driven lipid-oxidation experiments
- exposure
- CGA concentration series; iron-EDTA and iron-ADP comparisons
- limitations
- Chemical prevention of radical formation is distinct from radical scavenging. These assays do not measure human mineral stores, oral chelation therapy or clinical disease prevention.
- nutrient_topic
- Chlorogenic acid research collection; topical membership is not evidence of a direct dietary effect. · Chlorogenic acid / 5-O-caffeoylquinic acid
- organism
- Cell-free chemistry and bovine liver microsomes
- plain_language
- Preventing a radical from forming differs from catching one after it forms.
- primary_references
- [chlorogenic_acid-p9501514] Iron chelation by chlorogenic acid as a natural antioxidant. (1998). https://pubmed.ncbi.nlm.nih.gov/9501514/ DOI: 10.1271/bbb.62.22
- tissue_or_cell_type
- Ferric complexes, Fenton-type chemistry and microsomal lipids
Chlorogenic acid: 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 · Spectroscopy, ESR, NMR and iron-driven lipid-oxidation experiments · source_derived_draft · unverified_draft
### chlorogenic_acid-fenton-prevention The ferric CGA complex did not support Fenton-type hydroxyl-radical generation under the tested conditions. Condition category: normal nutrient_topic: Chlorogenic acid research collection; topical membership is not evidence of a direct dietary effect. plain_language: Preventing a radical from forming differs from catching one after it forms. organism: Cell-free chemistry and bovine liver microsomes tissue_or_cell_type: Ferric complexes, Fenton-type chemistry and microsomal lipids experimental_model: Spectroscopy, ESR, NMR and iron-driven lipid-oxidation experiments limitations: Chemical prevention of radical formation is distinct from radical scavenging. These assays do not measure human mineral stores, oral chelation therapy or clinical disease prevention. exposure: CGA concentration series; iron-EDTA and iron-ADP comparisons evidence_span: {"source_cache": "artifacts/chlorogenic_acid-research/9501514.abstract.txt", "locator": "Primary indexed abstract; zero-based, end-exclusive Unicode character offsets", "file_sha256": "eb573ad7da5b27974eff1c3a31d52becf53a72ffe3216703743aab82eacef1b7", "start_char": 0, "end_char": 797, "text_sha256": "eb573ad7da5b27974eff1c3a31d52becf53a72ffe3216703743aab82eacef1b7"} [chlorogenic_acid-p9501514] Iron chelation by chlorogenic acid as a natural antioxidant. (1998). https://pubmed.ncbi.nlm.nih.gov/9501514/ DOI: 10.1271/bbb.62.22
Complete structured claim and evidenceChanging DMPO concentration did not change the inhibition midpoint, supporting prevention of radical generation through iron chelation rather than direct hydroxyl-radical trapping.
Experimental context and source evidence
- evidence_span
- {"source_cache": "artifacts/nasunin-research/10962130.abstract.txt", "locator": "Primary indexed abstract; zero-based, end-exclusive Unicode character offsets", "file_sha256": "61b195a6eff14c25cfc341069c7cafb8fe4d0b374aa294b3d28e0e48bbed7c16", "start_char": 0, "end_char": 1706, "text_sha256": "61b195a6eff14c25cfc341069c7cafb8fe4d0b374aa294b3d28e0e48bbed7c16"}
- experimental_model
- DMPO-competition ESR assay and peroxide challenge
- exposure
- Variable DMPO concentrations; nasunin below 50 micromolar in homogenate experiments
- limitations
- Related investigators and overlapping numerical results with the 1998 report; not independent replication. Ferrous-chelation interpretation is distinct from the earlier Fe(III) stoichiometry experiment.
- nutrient_topic
- Nasunin research collection; topical membership is not evidence of a direct dietary effect. · Nasunin
- organism
- Cell-free reaction and rat brain homogenate
- plain_language
- Preventing a radical from forming differs from catching it afterward.
- primary_references
- [nasunin-p10962130] Antioxidant activity of nasunin, an anthocyanin in eggplant peels. (2000). https://pubmed.ncbi.nlm.nih.gov/10962130/ DOI: 10.1016/s0300-483x(00)00202-x
- tissue_or_cell_type
- Fenton chemistry and lipid-peroxidation markers
Nasunin: identity, redox chemistry and nutrient connections (2026-09-17) · lines 575–586
AI-assisted literature curation; primary study URLs and scope retained in the document and extraction. Not publisher full text. · supports · DMPO-competition ESR assay and peroxide challenge · source_derived_draft · unverified_draft
### nasunin-fenton-prevention Changing DMPO concentration did not change the inhibition midpoint, supporting prevention of radical generation through iron chelation rather than direct hydroxyl-radical trapping. Condition category: normal nutrient_topic: Nasunin research collection; topical membership is not evidence of a direct dietary effect. plain_language: Preventing a radical from forming differs from catching it afterward. organism: Cell-free reaction and rat brain homogenate tissue_or_cell_type: Fenton chemistry and lipid-peroxidation markers experimental_model: DMPO-competition ESR assay and peroxide challenge limitations: Related investigators and overlapping numerical results with the 1998 report; not independent replication. Ferrous-chelation interpretation is distinct from the earlier Fe(III) stoichiometry experiment. exposure: Variable DMPO concentrations; nasunin below 50 micromolar in homogenate experiments evidence_span: {"source_cache": "artifacts/nasunin-research/10962130.abstract.txt", "locator": "Primary indexed abstract; zero-based, end-exclusive Unicode character offsets", "file_sha256": "61b195a6eff14c25cfc341069c7cafb8fe4d0b374aa294b3d28e0e48bbed7c16", "start_char": 0, "end_char": 1706, "text_sha256": "61b195a6eff14c25cfc341069c7cafb8fe4d0b374aa294b3d28e0e48bbed7c16"} [nasunin-p10962130] Antioxidant activity of nasunin, an anthocyanin in eggplant peels. (2000). https://pubmed.ncbi.nlm.nih.gov/10962130/ DOI: 10.1016/s0300-483x(00)00202-x
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.