New Potent Antioxidative o-Dihydroxyisoflavones in Fermented Japanese Soybean Products

Autor: ESAKI, Hideo, KAWAKISHI, Shunro, MORIMITSU, Yasujiro, OSAWA, Toshihiko
Zdroj: Bioscience, Biotechnology, and Biochemistry; January 1999, Vol. 63 Issue: 9 p1637-1639, 3p
Abstrakt: A potent antioxidative 6-hydroxydaidzein (6-OHD) was newly isolated from soybean koji fermented with Aspergillus oryzae. 6-OHD, in addition to 8-hydroxydaidzein and 8-hydroxygenistein, were found to be present in various fermented soybean products, including their koji. Considering that these o-dihydroxyisoflavones had strong antioxidative activities, they may contribute to protecting from oxidative deterioration during the processing of fermented soybean products.
Databáze: Supplemental Index