Journal
INTERNATIONAL JOURNAL OF FOOD SCIENCE AND TECHNOLOGY
Volume 45, Issue 7, Pages 1464-1471Publisher
WILEY
DOI: 10.1111/j.1365-2621.2010.02288.x
Keywords
Antioxidant activities; dietary fibre; hydration properties; persimmon peel; washing treatments
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P>Dietary fibre components, hydration properties and antioxidant activities such as 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical scavenging, reducing power, metal chelating and 2,2'-azino-bis,3-ethyl-benzo-thiazoline-6-sulphonic acid (ABTS) radical scavenging activities of persimmon peel powders using different washing treatments (tap water at 20 degrees C and hot water) were investigated. Peel powder obtained from hot water-washed peels (74.95 g per 100 g) had higher dietary fibre content than tap water-washed (65.50 g per 100 g) and unwashed (60.99 g per 100 g) peels. The higher content of total phenolic and ascorbic acid were found in peel powder obtained from unwashed peels, whereas washed peels had more beta-carotene content. The EC50 values of scavenging DPPH and ABTS radical for peel powders obtained from unwashed, tap water-washed and hot water-washed peels were 75.44, 142.18 and 110.17 mu g mL-1 respectively and 5.31, 5.34 and 5.39 mu g mL-1 respectively. Therefore, hot water washing is recommended to obtain better quality products from persimmon peel for use as a fibre supplement.
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