PT  - JOURNAL ARTICLE
AU  - Claudio Peri
TI  - Acid Degradation of Leucoanthocyanidins
AID  - 10.5344/ajev.1967.18.4.168
DP  - 1967 Jan 01
TA  - American Journal of Enology and Viticulture
PG  - 168--174
VI  - 18
IP  - 4
4099  - http://www.ajevonline.org/content/18/4/168.short
4100  - http://www.ajevonline.org/content/18/4/168.full
SO  - Am J Enol Vitic.1967 Jan 01; 18
AB  - The conversion of leucoanthocyanidins into the corresponding anthocyanidins was studied on two purified preparations of leucoanthocyanidins of different degree of polymerization, extracted from grape seeds.Contrary to results of others, the reaction of the conversion seems to be of the second order.During the hot acid treatment a compound derived from catechin having Emax at 4.60 mµ is produced, chiefly from the preparation of less polymerized leucoanthocyanidins. The formation of this compound does not seem much influenced by oxygen, and occurs as a first-order reaction.