Tissue Repair & Regeneration
Soy Peptides
Digest soy protein with enzymes and some of the fragments that come out block angiotensin-converting enzyme, the same target as a widely prescribed class of blood-pressure drugs. The trial on file tests exactly that: 100 adults with untreated blood pressure in the prehypertensive to stage 1 range took 4.5 grams of black soy peptides daily for eight weeks, and systolic pressure fell 9.7 mmHg against 2.9 on placebo. Soy peptides are sold as a cosmetic ingredient as well, and that side has nothing comparable behind it — the figures quoted rest on a nine-person ultraviolet-protection study and an eye-cream trial, neither of which appears among the graded references.
Last updated
Mechanism
Inhibit angiotensin-converting enzyme and raise nitric oxide and superoxide dismutase, lowering oxidative stress markers.
Reported effects
What sources associate with this compound. Reported categories, not outcomes we have graded — each would need its own citation and rung.
- Blood pressure research
- Antioxidant status research
- Topical skin ageing context
Dosing on file unverified
Topical: 2.5-10 IU/mL soy oligopeptide; Oral: soy supplements
Carried from a source that labels it unverified, and reproduced with that label attached. A record of what is reported, not a recommendation. No citation on this page establishes it.
Literature on file 3
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in vitro
Production and characterization of bioactive peptides from soy hydrolysate and soy-fermented food (Food Research International 2004, cited 325x) graded on: enzymatic hydrolysates purified and screened in cell-free activity assays — read from the abstract — “abstract review”
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review or editorial
Soy bioactive peptides and the gut microbiota modulation (Applied Microbiology and Biotechnology 2020, cited 67x) graded on: indexed as "Review" - secondary literature, not a study — “Review”
Not graded
1 citation whose study design could not be read from the title. Left ungraded rather than guessed at.
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not graded
NCT01674491: Effects of Black Soy Peptide Supplementation on Blood Pressure and Oxidative Stress: A Randomized Controlled Trial graded on: NCT01674491 is completed and has posted no results - a registration, not a reported outcome — “NCT01674491”
Notes unverified prose
Small human studies: topical soy oligopeptides showed dose-dependent UV protection (n=9); eye cream trial: 35% reduction in dark circles at 8 weeks; limited independent RCTs; NCT01674491 (blood pressure); memory function RCT
Not on file 9
8 of the 8 fields we track hold nothing on this record, and each says why. 1 further absence is named below. A blank field is a bug; a named absence is a finding.
- molecular weightnothing we hold supplies it
- molecular formulanothing we hold supplies it
- CAS registry numbernothing we hold supplies it
- PubChem identifiernothing we hold supplies it
- amino-acid sequencenothing we hold supplies it
- SMILES stringnothing we hold supplies it
- InChInothing we hold supplies it
- InChI keynothing we hold supplies it
- half-lifenothing we hold supplies it
Each field links to every other record missing the same thing. The full ledger holds 765 gaps across 163 records.