Model Number: Proanthocyanidins Key Specifications/Special Features: Product name: grape seed extractLatin name: Vitis ViniferAppearance: reddish brown powderPart of used: leaves/seed/vine/skinProducts descriptionGrape seed extract is the spin-off of grape manufacturing, which has been by now the most effective antioxidants from plant source. Studies show that oligomeric proanthocyanidins (OPCs), which is the main bioactive ingredient of grape seed extract, antioxidant capabilities are 20 times more powerful than vitamin C and 50 times more potent than vitamine E, thus it can powerfully remove radicals and improve immunity

Specifications
1. Grape leaf extract polyphenols 18%-50% UV/Folin-C
2. Grape seed extract proanthocyanidins(OPC) 95% UV
3. Grape seed extract polyphenols 75%-85% UV/Folin-C
4. Grape skin extract polyphenols 30%-50% UV/Folin-C
5. Grape vine extract polyphenols 30% Folin-C
6. Grape vine extract resveratrol 0.5%-5% HPLC