Description
COA-BACKED PEPTIDE INGREDIENT
Tuna Collagen Peptide from Thunnus skin collagen
Tuna collagen powder from LongBio is a hydrolysed collagen peptide made from Thunnus skin and supplied as a free-flowing powder for B2B nutrition, beverage and supplement programmes. The grade is fixed by three parameters that decide how it behaves in your process: the species and tissue it comes from, its protein content (specified at >=90.0% on a dried basis) and its peptide molecular-weight distribution.
COA-Backed Specification
| Source material | Thunnus skin collagen |
|---|---|
| Peptide form | Hydrolysed tuna skin collagen peptide |
| Form and colour | Fine white to off-white powder |
| Assay | Protein >=90.0% on dried basis; low-molecular-weight peptide fraction |
| Method | HPLC |
| Particle size | 98% through 80 mesh |
| Loss on drying | <=5.0% |
| Ash | <=5.0% |
| Heavy metals | Within the limits of the approved specification |
| Microbiological limits | Within the limits of the approved specification |
| Representative batch | LXJQ260629 |
| Manufacture date | 29 Jun 2026 |
| Shelf life | Two years when stored properly |
Representative values do not replace the current shipment COA.
Buyer Decision Guide
Peptides are specified by source, degree of hydrolysis and molecular-weight distribution. Confirm the protein content basis, the assay method and the MW cut-off, because two products described by the same name can behave very differently in solubility and taste.
- Confirm the source material declaration
- Check protein content and the assay method
- Review molecular-weight distribution data
- Confirm solubility, taste and hygroscopicity for your format
How This Grade Differs
Tuna Collagen Peptide is a hydrolysed peptide from Thunnus skin collagen. Compare the tuna source, protein content and peptide molecular-weight distribution with cod and other fish collagen grades before substitution.
Compare these related grades before approval:
- Cod Skin Collagen Peptide Powder
- Tilapia Scale Collagen Peptide Powder
- Bovine Hide Collagen Peptide Powder
- Collagen Oligopeptide Powder (<1000 Da)
- Fish Collagen Peptide Powder
- Peptide Ingredients overview
For a substitution review, compare marine species or source tissue, protein content, peptide molecular-weight distribution, analytical method and the current offered-batch COA.
Tuna Collagen Powder: Source, Species and Substitution
“Tuna collagen powder” describes a species and a form, not one fixed material. Fish skin and fish scale collagen are both predominantly Type I, which is why suppliers treat them as interchangeable — but the species and the tissue change the peptide distribution, the colour and the odour of the finished powder.
| Raw material | Tissue | Collagen type | Offered form | Selection note |
|---|---|---|---|---|
| Tuna (Thunnus) | Skin | Type I (predominant) | Hydrolysed peptide powder | The grade on this page |
| Cod | Skin | Type I (predominant) | Hydrolysed peptide powder | Alternative marine skin source; compare the MW profile before substituting |
| Tilapia | Scale | Type I (predominant) | Hydrolysed peptide powder | Scale-derived; mineral handling differs from skin collagen |
| Bovine | Hide | Type I with Type III | Hydrolysed peptide powder | Non-marine alternative; carries Type III alongside Type I |
For a substitution review, hold species, tissue, protein basis, molecular-weight curve, moisture, ash and sensory result side by side. Matching on protein content alone does not establish equivalence.
What Buyers Verify Before Approving a Tuna Collagen Powder Lot
Fish peptide projects fail on details that never appear on a one-line quotation. These are the six points to close before the first production order:
- Species and tissue on the certificate. The COA must name Thunnus skin, not “fish collagen”. The species is what the specification is built on.
- Protein content basis. This grade is specified at >=90.0% on a dried basis. Confirm whether your receiving specification is written on a dried or an as-is basis, because the two numbers are not comparable.
- Degree of hydrolysis and molecular-weight distribution. Ask for the distribution curve rather than an adjective. “Low molecular weight” is not a specification — the cut-off is.
- Sensory performance in your matrix. Taste and odour carry through into beverages and sachets. Evaluate at your intended use level, not as a dry sample.
- Moisture and ash. Both are held at <=5.0% on this specification. Hygroscopic peptide powders are sensitive to pack integrity, so confirm your own limit against the shipment COA.
- Heavy metals and microbiological limits. Confirm against the destination market and the finished-product specification, not against a generic statement.
Application Areas
- Protein and peptide beverage powders
- Supplement sachets and capsules
- Clinical and sports nutrition
- Private-label nutrition projects
Packaging and Delivery
- Evaluation sample typically 10-20 g, subject to stock
- Regular MOQ typically 1 kg
- 1 kg foil bag or 25 kg fibre drum with inner food-grade liner
- Custom packing and private-label options subject to confirmation
- Typical lead time 7-15 working days after deposit
Quality and Documentation
Representative batch LXJQ260629 supports the specification table above. Use the cited record for preliminary comparison and request the offered-lot COA for final technical approval. Batch COA, specification sheet, agreed third-party testing and export documents are available for buyer verification.
Frequently Asked Questions
Is the declared percentage a specification limit or a measured result?
The specification figure is Protein >=90.0% on dried basis; low-molecular-weight peptide fraction; the measured result for your lot is reported separately on its COA.
What links the quotation to the delivered material?
The specification figure (Protein >=90.0% on dried basis; low-molecular-weight peptide fraction) and the batch number LXJQ260629 carry through from quotation to certificate.
Is tuna collagen powder the same thing as tuna collagen peptide?
The two names are used interchangeably in the trade. This grade is a hydrolysed peptide supplied as a powder: the peptide is what the material is, the powder is the form it ships in. Because the names carry no specification, approve the grade on its degree of hydrolysis and molecular-weight distribution rather than on its label.
Is tuna collagen the same as marine collagen?
Marine collagen is a category, not a specification. It covers collagen from fish skin, scales and bone — tuna, cod and tilapia among them. Two marine collagen powders can differ in species, tissue, degree of hydrolysis and molecular-weight distribution, so the species and tissue declared on the COA decide whether one can substitute for another.
How should the material be stored after arrival?
Two years when stored properly. Keep the pack sealed; moisture uptake is the main risk for this grade.
How does the material behave in your process?
It is supplied as Fine white to off-white powder at 98% through 80 mesh, so bulk density and flow are confirmed against your process before the first order.
Can I get a sample before placing the order?
Yes. An evaluation sample is normally available before a formal order. Sample quantity, courier account and destination are confirmed at the time of request.
What packing options are available?
Standard packing is a sealed food-grade inner liner inside an export carton or fibre drum. Pack size, labelling and private-label artwork are agreed in the written specification.
Which documents come with the shipment?
Batch COA, specification sheet, agreed third-party testing where required, commercial invoice, packing list, certificate of origin and transport documents. The exact set is confirmed against the product and destination market.
Can you supply tuna collagen powder in bulk?
Yes. Regular MOQ is typically 1 kg, with 1 kg foil bags and 25 kg fibre drums as standard; larger and custom pack sizes are agreed in writing. Lead time is typically 7-15 working days after deposit, subject to stock and testing.
Request COA, Sample or Quotation
Send your target specification, application, order quantity, destination country and required test limits.
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