Optimizing Extract Conditions of Tea Polysaccharides with Ultrasonic by Using Response Surface Methodology

Aiming at the determination of the contents of tea polyphenols,with water as the extraction of the polyphenols in Huangshan Maofeng tea with ultrasonic method,the extraction time,solid-liquid ratio,extraction times on the extraction rate of tea polyphenols were investigated.On the basis of single factor,by central composite design of BoxBehnken through the analysis of the experimental optimization,the optimum conditions of extraction response surface,the results further confirmed that the optimized extraction conditions for the extraction time was 40.99 min,ratio of material to liquid(g/ml)was 1∶31.84,extracting 3times,and the constraction ratio can reach 21.91%.