7Kikuzaki H ,NakatanI N. antioxidant effects of some ginger constituents [J] . J. Food Sci., 1993,58 (6):1 407 - 1 410.
8Beauchamp C, Fridovich Irwin.Superoxi- de dismutase:improved assays and an assay applicable to acrylamide gels[J]. Anal Biochem, 1971,44:276-287.
9Cutteridge M C. Thiobarbimdc acid reactivity following iron-depenent free radical damage to amino acids and carbo hydrates [J].FEBS Letters, 1961, 128: 343-348.