Abstract: Dietary fiber frink of persimmon was studied by using Gongcheng Persimmo n in Guangxi as ma-terials.Optimization mixture design was conducted to study the amount o f fruit juice,acid,stabilizers and sugar used as main factors to set up a q uadratic with four variables regression equation.With the help of computer -aid optimum -searching,a best formula of reason amount of frui t juice,acid,stabilizers and sugar used was obtained.The products was graded and systemically analysed.At the same time,methods of deastringency was chosed by measuring the amount of tannis content.By studying the methods of measuring dietary fiber drink of persimmon,th e content of TDF ,SDF and IDF were dete cted respectively.The preservation of the colour,the odou r and the taste of dietary fiber drink of persimmon was also studied.

Key words: persimmon, dietary fiber drink, dea stringency, regression