Keyora Skin Systems Nutrition - Collagen Tripeptides EP-10: The Marine Collagen Source-to-Efficacy Matrix: Tilapia-Scale Source Identity, Peptide Characterization, and Preparation-Matched Human Evidence

Background The commercial term "marine collagen" does not establish fish species, anatomical tissue, peptide composition, or clinical equivalence. Tilapia is principally freshwater, and its mineralized scales differ from fish skin as a collagen feedstock. Meaningful skin-nutrition evidence requires matching defined materials to hydration, barrier, elasticity, and wrinkle endpoints. Objective and Scientific Framework This narrative synthesis develops the Keyora Marine Collagen Source-to-Efficacy Matrix and its six-layer Source-to-Efficacy Evidence Framework: documented biological source, controlled peptide preparation, molecular quality, preparation-matched human evidence, reproducible quality records, and direct finished-product validation. Five chapters connect source authentication, manufacturing, analytical standardization, consumer safety, and clinical research readiness. Mechanistic Foundations Tilapia scales contain mineral-associated type I collagen with two alpha1(I) and one alpha2(I) chains and characteristic Gly-X-Y motifs. Chen et al. (2018) identified 127 peptides after eight hours of tryptic digestion, including 65 alpha1- and 62 alpha2-derived fragments. Enzyme choice, extraction, ultrafiltration, and drying influence recovered peptide populations. Size-exclusion chromatography and LC-MS/MS distinguish molecular-mass distributions, total tripeptide fractions, and named sequences such as Pro-Hyp and Gly-Pro-Hyp; amino-acid sums cannot quantify intact Gly-Pro-Hyp. Experimental and Human Evidence Huai et al. (2026) observed enzyme-dependent hydrolysis degrees of 19.2% for skin gelatin with alkaline protease and 18.8% for scale gelatin with trypsin, not clinical outcomes. In a randomized trial of tilapia-scale collagen peptide NS (CPNS), 1,650 mg/day for twelve weeks produced significant hydration and desquamation improvements by week four and selected elasticity and wrinkle improvements by week twelve among 100 completers; between-group transepidermal water loss was nonsignificant. Kim et al. (2018) studied 1,000 mg/day of sutchi-catfish-skin collagen in 64 randomized women, with 53 completing: hydration improved at weeks six and twelve, and selected elasticity and crow's-feet outcomes at week twelve, but not every elasticity index. Virgilio et al. (2024) demonstrated circulating hydroxyproline-related peptides after single 10 g doses in six adults, establishing exposure rather than clinical efficacy. Integrated Scientific Interpretation Keyora declares 1,500 mg tilapia-scale hydrolysed collagen powder per two tablets, approximately 459 Da supplier-reported mean molecular mass, 30% total tripeptides, and over 50% combined glycine, proline, and hydroxyproline. Its six additional ingredients are elastin peptide, hyaluronic acid, ceramide NP, vitamin C, nicotinamide, and biotin. These specifications inform batch traceability, contaminant and microbiological testing, fish-allergy screening, and prespecified measurement design, not equivalence to studied CPNS or other preparations. Evidence Boundaries and Conclusions A 2025 meta-analysis of 23 randomized trials involving 1,474 participants reported positive pooled results but no significant benefit among higher-quality or non-industry-funded studies. Direct randomized testing of the actual seven-component Keyora formula is still required. The framework distinguishes source and manufacturing evidence, biological exposure, preparation-specific clinical findings, and unverified finished-product effects.