Effect of different level of injury on ginger antioxidant content and antioxidant capacity

In this study,the antioxidant content and antioxidant activity of ginger which was cut in different ways( platelet,block and powder) and placed at 4℃ condition for different time were determined.Outcome measures included the content of flavonoids,reduced glutathione( GSH) and ascorbic acid. In addition,the superoxide dismutase( SOD) activity and the scavenging activity of water and liposoluble substance of ginger extract were also measured.The results indicated that all cutting treatments improved the content of GSH and ascorbic acid,SOD activity as well as the scavenging activity of water and liposoluble substance.However,VCcontent decreased while filling the cutting process and storage,and the more the ginger was injured,the more VCcontent decreased.It should be pointed out that the antioxidant capacity of liposoluble substance was far more than that of water soluble substance in ginger.Overall,three different cutting injury increased the antioxidant ability of ginger,and the moderate injury( block) was most conducive to improve the antioxidant capacity.