Almond Nut

Product name Grape seed extract, 95% Polyphenols Revised 4/2019
Botanical name Vitis vinifera L.
Product code 13109
Shelf life 2 years
Storage conditions Store in unopened container in a cool and dry place, keep away from strong light and heat.
Part used Seeds
Extract solvents Ethanol + water (30:70)
Carrier /Excipients None
Extract ratio 10-12:1
Remarks Colour variations can occur from batch to batch due to seasonal variations in the raw material. The colour change will not affect the quality of the product.
Natural products can be hygroscopic and may agglomerate sometimes. It ist suggested to sift the product before use.
Country of origin Raw material: Germany; Powder: China
Test Item Specification Method
Appearance Light reddish brown powder visual
Particle size 100 % through 80 mesh CP2010
Identification Confirm TLC & HPLC
Proanthocyanidins ≥ 95 % Bate-Smith
OPC ≥ 40 % HPLC
Polyphenole ≥ 95 % (Catechin equivalents) UV-Vis (OD 280nm)
Polyphenole ≥ 70 % (Gallic acid equivalents) UV-Vis (Folin-C)

Loss on drying ≤ 5.0 % CP2010
Total ash ≤ 1.0 % CP2010
Bulk density ≥ 0.30 g/ml USP35
Tapped density ≥ 0.45 g/ml USP35
Residue solvents < 5000 ppm USP35
Pesticide residues Meet requirements of USP35 USP35
Heavy metals ≤ 10 ppm USP35
Arsenic ≤ 2.0 ppm USP35
Lead ≤ 3.0 ppm USP35
Mercury ≤ 0.1 ppm USP35
Cadmium ≤ 1.0 ppm Ph. Eur.
Microbiology

TAMC ≤ 5 x 10⁴ cfu/g Ph. Eur.
TYMC ≤ 5 x 10² cfu/g Ph. Eur.
E.coli negative /g Ph. Eur.
Salmonella negative /25g Ph. Eur.