Determination of Cyanidin-3-Glucoside in Black Soybeans

Anthocyanins, essential factor to fix the color tone of flowers and fruits, are the generic name of theglycosides which have anthocyanidins as aglycones. The color tone of anthocyanins varies greatly according to the pH. It is known that many types of anthocyanins exist widely throughout higher plants, and recently they are receiving much attention due to their antioxidative properties.Among these, cyanidin-3-glucoside, the glucose glycoside of cyanidin, is said to account for more than 90 % of the anthocyanidins present in black soybeans. Here we introduce an analysis of cyanidin-3-glucoside using the Prominence SPD-M20A photodiode array detector.