Studies on Anthocyanin Pigments in Fruits Harvested in Japan

Part IV.On anthocyanin pigments in grape peels of Bailey Alicante A(teinturier variety)

Abstract

Twelve anthocyanins from grape peels of Bailey Alicante A(teinturier variety)were isolated and identified. The most abundunt anthocyanins were malvidin- and poenidin-3, 5-diglucosides(33.0 and 20.7%), and malvidin- and petunidin-3-monoglucosides(9.2 and 9.0%)followed to above-mentioned pigments. As small amount pigments, malvidin-3-(p-coumaroyl)-monoglucoside(5.3%), petunidin-3-monoglucoside(4.6%), peonidin-3-monoglucoside(4.4%), and malvidin- and peonidin-3, 5-diglucosides acylated with p-coumarate(4.0 and 3.5%)were found. The minimum quantity class was delphindin-3-monoglucoside and -3, 5-diglucoside(3.1 and 2.0%), and peonidin-3-(p-coumaroyl)-monoglucoside(1.2%). Total anthocyanin content was 106mg/g in dried skins.