6Zhishen J, Mengcheng T, Jianming W. The determination of flavonoid contents in mulberry and their scavenging effects on superoxide radicals [J] . Food Chem., 1999, 64:555-559.
7Changjiang G, Jijun Y. Antioxidant activities of peel, pulp and seed fractions of common fruits as determined by FRAP assay [J] . Nutri. Res., 2003, 23:1 719-1 726.
