DEFINITION

Grape Seeds Oligomeric Proanthocyanidins is a fraction of an extract of the ripe seeds of Vitis vinifera L. (Fam. Vitaceae). It contains NLT 75.0% of oligomeric proanthocyanidins, on the anhydrous basis. The extract is prepared using suitable solvents such as alcohol, methanol, acetone, ethyl acetate, water, or mixtures of these solvents, in a ratio of starting plant material to extract between 70:1 and 10:1. The extract is further enriched in oligomeric proanthocyanidins by fractionation with ethyl acetate or by other means.