FOOD SCIENCE ›› 2007, Vol. 28 ›› Issue (7): 181-184.

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Study on Microwave-assisted Extraction of Gynostemma pentaphyllum Polysaccharides

 CHI  Ai-Ping, CHEN  Jin-Ping   

  1. 1.College of Physical Education, Shaanxi Normal University, Xi’an 710062, China; 2.Department of Food Engineering, Shaanxi Normal University, Xi’an 710062, China
  • Online:2007-07-15 Published:2011-10-24

Abstract: Microwave-assisted extraction of Gynostemma pentaphyllum polysaccharides was studied by using single factor test and orthogonal test methods. It is concluded that the optimal conditions of extraction are microwave treatment for 12 min at powreof 400 W after being extracted for 50 min, the ratio of material to water 1:20. Under these conditions, the yield of polysaccharides is 3.37%. Compared with directheating extraction, MAE (microwave assisted entraction) can shorten the extraction time and improve yield of Gynostemma pentaphyllum polysaccharides.

Key words: Gynostemma pentaphyllum polysaccharides, microwave, extraction