FOOD SCIENCE ›› 2008, Vol. 29 ›› Issue (5): 142-144.

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Effects of UV Light on Induction of Resveratrol in Grape Peelings

 LIU  Zhu-Lan, ZHANG  Nan, CUI  Zhe, LIU  Jian-Li   

  1. Key Laboratory of Resource Biology and Biotechnology in Western China,Ministry of Education,School of Life Science,Northwest University
  • Online:2008-05-15 Published:2011-08-26

Abstract: The effects of UV lights(UV-C and UV-B)on the radiation of resveratrol in the harvested grape peelings were examined.The resveratrol content was analyzed by HPLC.The results showed that UV-B has little effects on the content of resveratrol in grape peelings,whereas maximum resveratrol content(15-fold higher than untreated grapes) is achieved when irradiated 20 min with UV-C with 48 h darkness treatment.Therefore,the controlled UV-C irradiation pulses are useful as a simple postharvest treatment to obtain possible" functional" grapes with a dietary source of high resveratrol content.

Key words: UV light, grape, resveratrol