Abstract
The antioxidative activities of normal and injured eggplant ‘Mizu-nasu’ fruit were evaluated using Trolox, which is a 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical scavenging reagent. In normal ‘Mizu-nasu’ fruit, there was a positive correlation (r=0.93, n=9) between anthocyanin concentration and the radical scavenging activity of the peel of ‘Mizu-nasu’ fruit. The amount of chlorogenic acid in the pulp of ‘Mizu-nasu’ fruit was 1.4 μmol/g · f.w. About half of the radical scavenging activity of the pulp was attributed to the chlorogenic acid in the pulp. The peel contributed 15.9% of the activity of its whole fruit, and the pulp contributed 84.1%. The injured part (6.69-8.05μmol of Trolox equivalent/g) had stronger activity than the normal part (3.46-4.73μmol of Trolox equivalent/g) of the fruit. These results suggest that injured fruit could be worth using as a polyphenol-rich-food.
