FOOD SCIENCE ›› 2008, Vol. 29 ›› Issue (11): 265-268.

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Study on Optimization of Microwave Extraction Process of Polyphenols from Rotten Jujube Peel by Using Response Surface Analysis

ZHOU  Xiang-Hui, PAN  Zhi-Li, CHEN  Song-Jiang, CHEN  Jun, LI  Mei-Juan, AI  Zhi-Lu   

  1. College of Food Science and Technology,Henan Agricultural University,Zhengzhou 450002,China
  • Online:2008-11-15 Published:2011-12-08

Abstract: The effects of ratio of raw material to liquid,microwave time,microwave power,ethanol concentration on the extraction rate of polyphenols from rotten jujube peel were investigated,and a predictive polynomial quadratic model was set up by means of central composite design to optimize the microwave extraction parameters of polyhneols from rotten jujube pell.The optimal conditions of microwave extraction are concluded as follows:ratio of raw material to liquid 0.035 g/ml,microwave treatment time 57.94 s,microwave power 450 W and ethanol concentration 40.30%.

Key words: microwave extraction, polyphenols, response surface