FOOD SCIENCE ›› 2007, Vol. 28 ›› Issue (10): 147-151.

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Ultrasonic-assisted Extraction Process of Flavones from North Ph. praecox Leaf

 ZHANG  Shan-Shan, ZHAO  Xiao-Hong   

  1. 1.College of Life Sciences, Capital Normal University, Beijing 100037, China; 2.College of Art and Science, Beijing Union University, Beijing 100083, China
  • Online:2007-10-15 Published:2011-11-22

Abstract: The ultrasonic-assisted extraction process of flavones from Ph. praecox leaf growing in the northern of China was studied. The main factors influencing the flavones extraction and their best levels were confirmed by the single factor analysis. And the optimum condition was confirmed by the orthogonal test. The results showed that the flavones extraction efficiency is 2.4% when the proportion of stuff mass is 1:15, ethanol volume is 80%, extraction time is 125 min, temperature is 70 ℃ and the power of ultrasonic is 500 W.

Key words: bamboo leaf, ultrasonic, flavone, extraction