Component
Anthocyanin hydroxylation and demethylation in the tested rat microsomal P450 assay
Anthocyanin hydroxylation and demethylation in the tested rat microsomal P450 assay. Interpret through the linked experimental species, preparation, compartment and exposure; no universal causal effect is implied.
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 tested NADPH-supported rat microsomal P450 system did not detect anthocyanin hydroxylation or demethylation.
Experimental context and source evidence
- evidence_access
- Primary indexed abstract reviewed; full methods, figures, exact doses or endpoint-specific species assignments may remain unextracted.
- experimental_contrast
- {"intervention": "Anthocyanins with NADPH-supported microsomal oxidation system", "comparator": "Assay baseline parent/product profile", "endpoint": "The tested NADPH-supported rat microsomal P450 system did not detect anthocyanin hydroxylation or demethylation.", "effect_direction": "no_detected_change", "combination": "single", "conditions": []} Explicit extracted experimental comparison; source-derived draft.
- experimental_model
- Rat liver microsomes; NADPH-supported phase-I assay.
- interpretation_status
- Source-derived extraction of a fact-checked reference; access is explicit, not independent raw-data verification.
- limitations
- No detected metabolism in this assay; not absence of every CYP-mediated reaction or drug interaction.
- plain_language
- The tested NADPH-supported rat microsomal P450 system did not detect anthocyanin hydroxylation or demethylation.
- primary_references
- Stability and biotransformation of various dietary anthocyanins in vitro. | 2006 | DOI 10.1007/s00394-005-0557-8 | PMID 15834757 | https://pubmed.ncbi.nlm.nih.gov/15834757/ | https://doi.org/10.1007/s00394-005-0557-8
- source_locator
- Reviewed reference lines 44-44; exact primary location described in quoted passage where extracted.
Anthocyanins: detailed mechanisms of action (reviewed 4 October 2026) · lines 44–44
Original AI-assisted review of primary studies and, where relevant, official regulatory records. Access level is retained per claim. Corrections, null results and unresolved questions remain explicit. Not publisher full text or independent replication. · supports · Rat liver microsomes; NADPH-supported phase-I assay. · source_derived_draft · unverified_draft
**Microbial cleavage and host conjugation are distinct steps.** Anaerobic human fecal incubations degraded glycosylated and acylated anthocyanins to B-ring-derived phenolic acids. Separate rat-liver microsome experiments produced glucuronides when supplied with activated glucuronic acid; the tested NADPH-supported P450 system did not hydroxylate or demethylate the pigments. These are model-specific positive and negative findings, not proof that all human metabolism is exclusively microbial or that every CYP interaction is absent. [Keppler and Humpf, 2005](https://pubmed.ncbi.nlm.nih.gov/15834757/).
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.