Description
STANDARDISED BOTANICAL EXTRACT
Crataegus pinnatifida Leaf Extract — 85% Flavones, 10% Vitexin
Hawthorn leaf extract with two declared assay targets: total flavones at 85% by UV and vitexin at 10% by HPLC. Check both analytes and methods on the current batch COA before comparing this grade with other hawthorn products.
COA-Backed Specification
| Identity | Crataegus pinnatifida Bge. |
|---|---|
| Plant part | Leaf |
| Form and colour | Fine yellowish-brown powder |
| Assay | Flavones 85% by UV; Vitexin 10% by HPLC |
| Method | UV for total flavones; HPLC for vitexin |
| Ratio basis | High-purification grade, not a ratio extract |
| Particle size | 98% through 80 mesh |
| Loss on drying | Within the limits of the approved specification |
| Ash | Within the limits of the approved specification |
| Heavy metals | Within the limits of the approved specification |
| Microbiological limits | Within the limits of the approved specification |
| Shelf life | Two years when stored properly |
Limits shown are the agreed specification. Result values are issued on the batch-specific certificate of analysis.
Buyer Decision Guide
On hawthorn leaf the analytical method decides the number. UV total-flavone results and HPLC single-compound results are not interchangeable, so a specification should name the method alongside each figure.
- Total flavones: 85% by UV, measured against a rutin reference standard.
- Vitexin: 10% by HPLC, integrated on the same lot.
- Both declarations reported on one COA, so the two figures can be reconciled.
- Identity confirmed as Crataegus pinnatifida leaf, not fruit or a mixed species.
- Particle size, loss on drying and heavy metals reported per batch.
- COA, specification sheet and safety data sheet accompany each shipment.
How This Grade Differs
Other hawthorn leaf pages state 5% flavones or 2% vitexin rhamnoside; fruit pages use 4:1 or 10:1 extraction ratios. These are different analyte and plant-part specifications. Compare identity, named analyte, method and offered-lot result before substitution.
Compare listed grades: 5% flavones leaf extract; 2% vitexin rhamnoside leaf extract. Confirm the current batch specification before substitution.
Quality and Documentation
Each lot is tested twice: UV for total flavones and HPLC for vitexin, with both results recorded on the same certificate. Loss on drying, ash, heavy metals and microbiology are reported per batch.
Frequently Asked Questions
What specification defines Hawthorn Leaf Extract Powder 85% Flavones 10% Vitexin?
Flavones 85% by UV; Vitexin 10% by HPLC, tested by UV for total flavones; HPLC for vitexin.
How is this grade positioned against the other forms offered?
Other hawthorn leaf pages state 5% flavones or 2% vitexin rhamnoside; fruit pages use 4:1 or 10:1 extraction ratios. These are different analyte and plant-part specifications. Compare identity, named analyte, method and offered-lot result before substitution.
What must the certificate of analysis report for this product?
Total flavones: 85% by UV, measured against a rutin reference standard. Vitexin: 10% by HPLC, integrated on the same lot. Both declarations reported on one COA, so the two figures can be reconciled.
What should a buyer confirm before the first order?
On hawthorn leaf the analytical method decides the number. UV total-flavone results and HPLC single-compound results are not interchangeable, so a specification should name the method alongside each figure.
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.
Get the current batch COA, a sample or a quotation
