FOOD SCIENCE ›› 2005, Vol. 26 ›› Issue (7): 40-42.

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Study on Eluates Bacteriostatic Active Composition and Bacteriostatic Activity from Loropetalum Chinese Leaves

 LU  Cheng-Ying, XU  Dong-Xiang, DU  Yong, HUANG  Zao-Cheng, ZHONG  Wei   

  1. Key Laboratory of Forest Production and Chemical Engineering of Hunan, Jishou University
  • Online:2005-07-15 Published:2011-09-19

Abstract: The optimum condition for extracting antimicrobial substance by ethanol from the Loropetalum Chinese leaves wasinvestigated by orthogonal test. The optimum extracting conditions were: 60% ethanol, 45℃ and 2h. The results showed that theextracts could effectively inhibit the growth of bacteria. The bacteriostatic active eluates were separated by four resins. Thechemically identified results showed that the bacteriostatic active eluates were composed of coumarin, saponin, flavone andalkaloid.

Key words: Loropetalum Chinese leaves, bacteriostatic activity, extract, column chromatography