Wine Production, Skin Pigments of Cabernet Sauvignon Grape and Related Progeny

Abstract

Skin Pigments of the Cabernet Sauvignon Grape and Related ProgenyThe skin pigments of the Cabernet Sauvignon grape have been separated by paper chromatography and identified as malvidin, two glucosides of malvidin, a petunidin glucoside, a delphinidin glucoside, and a complex diglucoside of malvidin. Evidence is presented to indicate that the two malvidin glucosides are the 3-glucoside and the 3,5-diglucoside, and that the delphinidin and petunidin pigments are the 3,5-diglucosides. The malvidin diglucoside was the most abundant. The pigments of progeny of Cabernet Sauvignon and Carignane grapes were qualitatively identical with those of the Cabernet Sauvignon. The order of appearance of the anthocyan pigments in the maturing Cabernet Sauvignon grape was: malvidin diglucoside, malvidin monoglucoside and delphinidin glucoside, petunidin glucoside, and free malvidin, contrary to the hypothesis that in the developing fruit or flower anthocyanins are formed at the expense of the corresponding anthocyanidin.

Anthocyanins. IV. Anthocyanin Pigments of Cabernet Sauvignon Grapesa,b

“…The results of this study agreed partially with those reported by Bockian et al (1955) in that glycosides of delphinidin, petunidin, and 'malvidin were found. However, the state of glucosidation of the compounds found in this study was not the same as those reported by Bockian et al (1955).…”

“…However, the state of glucosidation of the compounds found in this study was not the same as those reported by Bockian et al (1955). Those investigators reported that the most abundant pigment was malvidin-3,5-diglucoside, based on the use of one solvent.…”

“…Bockian et al (1955) reported that the pigment of Cabernet Sauvignon grapes with the lowest Rf value (Rf = 0.11) was delphinidin-3,5-diglucosicle. However, they did not use synthetic delphinidin-3,5diglucoside for comparison.…”

“…The combined extract was filtered through filter paper, and the anthocyanins were precipitated with lead acetate as reported by Bockian et al (1955). The precipitate was washed several times with water to remove traces of free sugar.…”

“…This paper deals with identification of the major pigments of Cabernet Sauvignon grapes. REVIEW OF LITERATURE Bockian et al (1955) reported that Cabernet Sauvignon grapes contain delphinidin-3,5-diglucoside, petunidin-3,5-diglucoside, malvidin-3,5-diglucoside, malvidin-3-monoglucoside, malvidin, and malic acid. The number of anthocyanin pigments in various varieties was investigated by Rankine et d. ( 1958).…”