Buyer Guide
Sourcing Marine & Collagen-Based Nutraceuticals in Bulk
Quick Summary
- Both Fish Collagen Peptide and Sodium Hyaluronate are China-sourced marine or fermentation-derived specialty nutraceuticals used in oral beauty and joint health supplement formulations
- Heavy metals testing is the most critical quality control requirement for marine-derived ingredients — request a full four-metal panel (lead, arsenic, cadmium, mercury) with inorganic arsenic specified separately
- Molecular weight specification for sodium hyaluronate is the most important functional specification — different MW ranges have different GI absorption kinetics
- Both ingredients require specific claim language discipline — the evidence base for oral supplementation is growing but not yet at the certainty level of well-established nutrients like Vitamin C
The Two Ingredients and Their Key Procurement Differences
| Fish Collagen Peptide | Sodium Hyaluronate | |
|---|---|---|
| Origin | Marine (fish skin, scales, or bones) | Typically microbial fermentation (S. equi) or marine extraction |
| Protein type | Hydrolysed collagen peptides (Type I primarily) | Polysaccharide (glycosaminoglycan) — not a protein |
| Key specification | Molecular weight of peptides (typically 1–5 kDa) | Molecular weight of HA (low, medium, or high MW grades) |
| Heavy metals concern | Mercury, total/inorganic arsenic, lead, cadmium | Lead, cadmium (if marine-extracted) |
| Typical dose studied | 2.5–10 g/day (skin); 200 mg/day (joints) | 80–200 mg/day (skin); 120–200 mg/day (joints) |
| Allergen status | Fish allergen — mandatory declaration | Not a major food allergen |
| Pack size (YNP) | Confirm directly | Confirm directly |
*(Table is horizontally scrollable on mobile)*
Heavy Metals — The Non-Negotiable COA Requirement
For both ingredients, but especially for Fish Collagen Peptide, the COA must include a full heavy metals panel. As established in the Heavy Metals Testing Guide (Section 83):
- Mercury: Most important for fish-derived ingredients. Both methylmercury (organic, toxic) and total mercury should be confirmed. JECFA PTWI for methylmercury: 1.6 μg/kg body weight per week.
- Inorganic arsenic: Must be reported separately from total arsenic. Marine ingredients naturally contain high organic arsenic (arsenobetaine, largely non-toxic) — total arsenic values appear high for fish-derived products, but it is the inorganic arsenic fraction that is the toxicological concern.
- Lead and Cadmium: Confirm limits are within JECFA/EFSA/FDA applicable standards.
Do not accept a COA for marine collagen that reports only total arsenic without specifying inorganic arsenic separately.
Molecular Weight Specification for Sodium Hyaluronate
Sodium hyaluronate is available in a range of molecular weight grades:
- High molecular weight HA (>1,000 kDa): Native or lightly processed form. Excellent viscosity in solution. May have limited GI absorption at very high MW — large molecules may be partially degraded before absorption.
- Medium molecular weight HA (100–1,000 kDa): Balances functional viscosity with improved GI processability.
- Low molecular weight HA (<100 kDa): Better candidate for absorption via GI tract in intact or near-intact form; some research suggests better bioavailability for joint and skin effects; may have different biological activity than high MW.
Confirm the molecular weight range on the COA and ensure it matches the grade for which your chosen clinical reference studies were conducted.
Buyer Checklist
- Full four-metal heavy metals COA panel (Pb, As inorganic, Cd, Hg) requested and confirmed for fish collagen
- Molecular weight range confirmed for sodium hyaluronate
- Fish allergen declaration confirmed for all finished products containing fish collagen
- Production method for sodium hyaluronate confirmed (fermentation vs marine extraction — relevant for Halal/Kosher and vegan positioning)
- FSSAI-compliant documentation confirmed for both ingredients
- Pack sizes and MOQs confirmed directly with team
Related Glossary Terms
Related Downloads
References
Company Information
- YNP Ingredients, Fish Collagen Peptide and Sodium Hyaluronate product pages, ynpingredients.com (both China-sourced)
Industry Information
- JECFA. *Methylmercury — PTWI 1.6 μg/kg body weight per week.* WHO Technical Reports.
- Tashiro T, et al. *Oral administration of polymer hyaluronic acid alleviates symptoms of knee osteoarthritis.* Sci World J. 2012;2012:167928.
- Proksch E, et al. *Oral supplementation of specific collagen peptides.* Skin Pharmacol Physiol. 2014;27(1):47–55.