Description
COA-BACKED BOTANICAL INGREDIENT
Dioscorea oppositae Thunb. (as stated on COA) Stem Extract
Chinese Yam Stem Extract Powder 12:1 is presented for B2B ingredient qualification using representative batch evidence and batch-specific analytical language.
COA-Backed Specification
| Botanical identity | Dioscorea oppositae Thunb. (as stated on COA) |
|---|---|
| Plant part | Stem |
| Form and colour | Fine off-white powder |
| Assay | Extract ratio 12:1 by TLC; result complies |
| Particle size | 98% through 80 mesh |
| Loss on drying | <=5.0%; result 4.93% |
| Ash | <=5.0%; result 4.36% |
| Representative batch | LXSY250110 |
| Manufacture date | 10 January 2025 |
| Shelf life | Two years when stored properly |
Representative values do not replace the current shipment COA.
Buyer Decision Guide
Compare this Extract ratio 12:1 by TLC; result complies ratio grade by botanical identity, plant part and physical specification; the ratio is not an active-marker percentage.
- Evaluation sample typically 10-20 g
- Regular MOQ typically 1 kg
- Typical lead time 7-15 working days
How This Grade Differs
Chinese Yam Stem Extract Powder 12:1 is qualified using botanical identity: Dioscorea oppositae Thunb. (as stated on COA); plant part: Stem; offered grade: Extract ratio 12:1 by TLC; result complies. Its purchasing definition is the stated ratio grade (Extract ratio 12:1 by TLC; result complies), not a guaranteed active-compound concentration.
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.
Quality and Documentation
Representative batch LXSY250110 supports the specification table above. Current lot evidence and buyer-defined verification govern acceptance of the commercial shipment.
Frequently Asked Questions
What specification defines Chinese Yam Stem Extract Powder 12:1?
For Chinese Yam Stem Extract Powder 12:1: Extract ratio 12:1 by TLC; result complies.
What establishes the botanical source?
For Chinese Yam Stem Extract Powder 12:1: Qualification starts with Dioscorea oppositae Thunb. (as stated on COA), Stem. The product name alone is not sufficient when species, plant part or grade differs.
What evidence is needed for the offered lot?
For Chinese Yam Stem Extract Powder 12:1: The page cites representative batch LXSY250110. The sample, quotation and shipment COA should be traceable to the grade actually offered.
Should the COA be reviewed before sample approval?
For Chinese Yam Stem Extract Powder 12:1: Yes. The commercial review should use the COA for the lot being offered, together with the matching quotation and specification.
Which quality data should be checked together?
For Chinese Yam Stem Extract Powder 12:1: Review identity and Extract ratio 12:1 by TLC; result complies together with the listed physical tests and applicable contaminant and microbiological limits.
How should buyers confirm supply timing?
For Chinese Yam Stem Extract Powder 12:1: Commercial timing is finalised after quantity, packaging, document set and any additional testing have been agreed.
Can particle size or pack format be adjusted?
For Chinese Yam Stem Extract Powder 12:1: Application-specific requests require technical review. Approved changes should be documented rather than treated as an informal substitution.
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