Anthocyanin pigments of wild and seibel No. 13053 grapes harvested in Tokachi.

Anthocyanin pigment contents in three strains(A, B and C)of wild grapes in Tokachi district and Seibel No.13053 grapes were respectively 71.9, 37.4, 97.8 and 64.3mg per 100g of fresh weight in terms of delphinidin-3-monoglucoside.From these grapes, 12 anthocyanins were isolated and identified as follows: 3-monoglucosides and 3, 5-diglucosides of delphinidin, petunidin, malvidin and peonidin; delphinidin-3-monoglucoside and -3, 5-diglucoside acylated with p-coumaric acid; peonidin-3, 5-diglucoside and malvidin-3-monoglucoside acylated with p-coumaric acid.The species of wild grapes are discussed from the viewpoint of these pigment patterns mentioned above.