Component
Anthocyanin pH-dependent reversible molecular-form transitions
Anthocyanin pH-dependent reversible molecular-form transitions. 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
Solution pH changes reversible molecular-form transitions of the tested anthocyanin glucosides; degradation is a separate process.
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_model
- Purified anthocyanin aqueous-solution kinetics; exact compound and pH dependence.
- interpretation_status
- Source-derived extraction of a fact-checked reference; access is explicit, not independent raw-data verification.
- limitations
- Interpret only within the recorded preparation, exposure and comparator. The complete source passage retains qualifications; unspecified doses/timing have not been extracted here. No clinical efficacy, nutrient deficiency or unique molecular mediation is inferred.
- plain_language
- Solution pH changes reversible molecular-form transitions of the tested anthocyanin glucosides; degradation is a separate process.
- primary_references
- A New Insight into the Degradation of Anthocyanins: Reversible versus the Irreversible Chemical Processes. | 2022 | DOI 10.1021/acs.jafc.1c06521 | PMID 34982560 | https://pubmed.ncbi.nlm.nih.gov/34982560/ | https://doi.org/10.1021/acs.jafc.1c06521
- source_locator
- Reviewed reference lines 11-11; exact primary location described in quoted passage where extracted.
Anthocyanins: detailed mechanisms of action (reviewed 4 October 2026) · lines 11–11
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 · Purified anthocyanin aqueous-solution kinetics; exact compound and pH dependence. · source_derived_draft · unverified_draft
**pH changes molecular form.** Experiments with four purified 3-O-glucosides distinguish reversible proton transfer, hydration and cis/trans isomerization from irreversible degradation. Flavylium, quinoidal, hemiketal and chalcone states are a reaction network whose populations and rates depend on the particular compound and solution. Color loss alone cannot identify the reaction. Neither one universal form at blood pH nor one universal plasma half-life follows from these solution experiments. [Sousa and colleagues, 2022](https://pubmed.ncbi.nlm.nih.gov/34982560/).
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.