IMPACTS OF ASCORBIC ACID AND CITRIC ACID ON REDUCING BROWNING OF READY TO COOK CHILI
Keywords:
anti-browning agent, ascorbic acid, browning, citric acidAbstract
Browning is critical in the preservation of quality and shelf life of fresh cut products. In this study, the effects of ascorbic acid and citric acid to inhibit browning were investigated. Green mature chili cv. Supper hot was washed with tap water and then the chili stem was removed. The intact chilies were treated with 1.5% w/v ascorbic acid, 0.5% w/v citric acid, and untreated chilies were served as a control. All samples were ground using a blender for 30 sec. Afterward the all samples were packed in a foam tray, sealed with PVC film and kept at 4 °C for 6 days. Treatment with ascorbic acid inhibited browning as indicating by lower color changes (L*, a*, B* and hue angle values) and browning index in compared to non-treated sample. In addition, samples treated with 1.5% ascorbic acid showed the increase of antioxidant capacity, vitamin C concentration and the highest acceptance score by consumer evaluations. The samples treated with citric acid showed the opposite tendency. These results suggest that 1.5% ascorbic acid could be used as an alternative approach to control browning and maintain quality of coarse grinding chili.
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