FOOD SCIENCE ›› 2008, Vol. 29 ›› Issue (9): 234-238.

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Optimization of Ultrasonic-assisted Extraction Conditions of Tea Polysaccharides by Using Response Surface Methodology

 ZHANG  Bin, XIE  Ming-Yong, YIN  Jun-Yi, NIE  Shao-Ping, ZHANG  Yuan-Yuan   

  1. State Key Laboratory of Food Science and Technology,Nanchang University,Nanchang 330047,China
  • Online:2008-09-15 Published:2011-12-08

Abstract: In this study, optimum condition of ultrasonic-assisted extraction of tea polysaccharide(TPS) is optimized by response- surface test. On the basis of single-factor test, the mathematical regression model is established about the dependent variable (extraction yield of tea polysaccharide ) and independent variables (ratio of material to water, extraction temperature and extraction time) through Box-Benhnken center composite design and response surface methodology. The optimum extraction conditions as follows: material to water ratio 1:28, extraction temperature 60 ℃, time 70 min. Under these conditions, the yield of tea polysaccaride is 10.46%.

Key words: ultrasonic wave, tea polysaccharide(TPS), response surface methodology