Comparison study on extracting tea polyphenols by different technique

Using fresh tea as material,extracting the polyphenols by ultrasonic wave auxiliary method and the traditional organic solvent extraction method was comparison studied in this paper,the different effect on the extraction rate and quality was also studied too.The conclusion shows:the ultrasonic wave auxiliary method was better than the traditional organic solvent extraction method at the same condition,and have many advantages,for example the time–saving,the high efficiency,the low cost,the easy to operate,the improving product quality etc.