FOOD SCIENCE ›› 2005, Vol. 26 ›› Issue (3): 56-59.

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Study on the Charactertics of PPO in Pleurotus FerulaeLenzi of Xinjiang Uygur Autonomous Region

 ZHENG  Jie, FENG  Zuo-Shan, LIU  Zong-Lin, JI  Bao-Ping   

  1. 1.College of Food Science and Nutritional Engineering, China Agriculture University; 2.College of Food Science, Xinjiang Agriculture University; 3.Beijing Food Research Institute
  • Online:2005-03-15 Published:2011-09-19

Abstract: Plolyphenol oxidase is one of the major factors to cause the browning of Pleurotus FerulaeLenzi. The characteristics of the polyphenol oxidase extracted from the Pleurotus FerulaeLenzi were studied by using spectrophotometer method. Use Catechol as substrate, the result showed that the absorptive wavelength of product was 440nm and the optimum pH was 6.0. EDTA-2Na and NaHSO3 were the strong inhibitors for the activity of polyphenol oxidase. The inhibit effect of VC or crtric acid was less.

Key words: Pleurotus FerulaeLenzi, PPO, characters, inhibitor