Changes in Radical Scavenging Activity of Japanese Cabernet Sauvignon Red Wines during Ageing

• Autores: Tsutomu Takayanagi, Tohru Okuda, Koki Yokotsuka, Michikatsu Sato
• Localización: Journal of wine research, ISSN 0957-1264, Vol. 13, Nº 2, 2002, págs. 93-100
• Idioma: inglés
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• Resumen

  • We investigated the relationship between the concentration of phenols in Cabernet Sauvignon red wines produced over 21 years from 1987 to 1998 and their radical scavenging activities [RSA]. The correlation between the concentrations of total phenols, or between those of either of the phenolic fractions and RSA was close. In contrast, the correlation between RSA and non-flavonoid phenols was poor. Total and flavonoid phenol concentrations and the total RSA of wines decreased during a period of about 10 years of storage, but their relative RSA (RSA mg -1 total phenols or flavonoids) gradually increased.