Anthocyanins. IV. Anthocyanin Pigments of Cabernet Sauvignon Grapes a, b

SUMMARY Six anthocyanins were isolated from Cabernet Sauvignon grapes. Four major and one minor pigment were identified by paper chromatography, color reactions, and spectroscopy. The four major anthocyanins were identified as delphinidin‐3‐monoglucoside, petunidin‐3‐monoglucoside, malvidin‐3‐monoglncoside, and malvidin‐3‐monoglueoside acetylated with chlorogenic acid. Malvidin‐3‐monoglucoside was the most abundant pigment of the grapes. One of the minor pigments was identified as petunidin.