Description
MARINE-DERIVED INGREDIENT
Oyster extract concentrate — Concentration 30% on solid basis
Oyster extract concentrate is supplied as a Viscous amber-grey liquid B2B ingredient for further processing. Produced by our audited marine-ingredient partner facility and supplied under LongBio batch documentation. Batch identity, specification and COA are matched across the quotation.
COA-Backed Specification
| Identity | Crassostrea gigas (Pacific oyster) |
|---|---|
| Form and colour | Viscous amber-grey liquid |
| Assay | Concentration 30% on solid basis |
| Method | Refractometry and gravimetric |
| Solid content | 30% +/-1% |
| Appearance | Clear to slightly opalescent liquid |
| pH (as supplied) | Within the approved specification range |
| Density | Within the approved specification range |
| Preservation | No preservative added unless agreed in writing |
| Heavy metals | Within the limits of the approved specification |
| Microbiological limits | Within the limits of the approved specification |
| Representative batch | LXHY260618 |
| Manufacture date | 18 Jun 2026 |
| Shelf life | Two years when stored properly |
Representative values do not replace the current shipment COA.
Buyer Decision Guide
Specify Oyster extract concentrate by the declared basis, the delivered form and the certificate of analysis. For this grade the basis is Concentration 30% on solid basis and the delivered form is Viscous amber-grey liquid. Confirm the destination market requirements, the intended use category and the required documentation before approval. This material is offered as an industrial raw material for further processing, not as a finished consumer product, and no health or medical claim is made.
- Declared basis and delivered form stated on the specification
- Documentation supplied: batch COA, specification sheet and agreed third-party testing
- Species and origin stated on the certificate; substitution requires written confirmation
- Destination market and intended use to be confirmed at quotation stage
- Samples available for evaluation against your own process
How This Grade Differs
Marine ingredients from the same species differ by the fraction delivered and the declared basis, not only by price. Oyster extract concentrate is offered as Concentration 30% on solid basis. Grades on a different basis, or concentrates at other solid levels, are separate products with separate certificates and should not be substituted without written confirmation.
Compare these related grades before approval:
For a substitution review, compare botanical identity, plant part, assay target, analytical method, physical form and the current offered-batch COA.
Application Areas
- Hard capsules and two-piece capsule filling
- Stick packs and single-serve sachets
- Powder blends and dry mixes
- Beverage and liquid concentrate systems, subject to the buyer’s process validation
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 LXHY260618 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
What specification defines Oyster Extract Concentrate 30%?
For Oyster Extract Concentrate 30%: Concentration 30% on solid basis, tested by Refractometry and gravimetric.
Which identity details must remain consistent?
For Oyster Extract Concentrate 30%: match Crassostrea gigas (Pacific oyster) across the quotation, specification and offered-batch COA. The offered grade is Concentration 30% on solid basis.
How is batch-specific approval completed?
For Oyster Extract Concentrate 30%: the page cites representative batch LXHY260618. Final approval requires the current lot’s identity, specification results and relevant dates.
What forms part of the technical review?
For Oyster Extract Concentrate 30%: do not assess Concentration 30% on solid basis in isolation; particle size, moisture or drying data and market-relevant safety limits can also affect acceptance.
Are you a manufacturer or a trading company?
LongBio is Shaanxi Longsheng Biotechnology Co., Ltd., a direct manufacturer of botanical extracts and functional ingredients integrating R&D, production and export support. Factory review can be arranged by video or an on-site visit.
Can I request the current batch COA before ordering?
Yes. Request the applicable current or representative COA and compare product identity, method, limits and results before approving a purchase order.
What is the minimum order quantity?
The regular MOQ is typically 1 kg. An evaluation sample of 10-20 g can usually be arranged before a formal order, subject to stock.
Do you support custom specifications or packing?
Alternative assay targets, particle size, packing and private-label requirements can be reviewed case by case, subject to production feasibility and a revised written specification.
Request COA, Sample or Quotation
Send your target specification, application, order quantity, destination country and required test limits.
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