1Stanislaw Burda, Wieslaw Oleszek. Antioxident and antiradical active ities of flavonoids [J]. Journal of Agricultural and Food Chemistry, 2001, 49 (6) : 2 774-2 779.
1Sakanaka S, Taehibana Y, Okada Y. Preparation and antioxidant properties of extracts of Japanese persimmon leaf tea ( kakinoha - cha) [J]. Food Chemistry, 2005, 89 (4) : 569 -575.