Abstract:The optimum extraction conditions of anthocyanins from purple potato peel by the response surface methodology were studied. On the basis of single factor test，the extracting temperature，solid-liquid ratio and extraction time were selected for the three-factor，three-level Central Composite experimental design. Design Expect 8.0 software was employed to analyze the test data and the response surface method was applied to optimize the extraction conditions. The results indicated the optimum conditions for organic reagents extraction were as follows：the time was 102 min，material-to-liquid ratio was 1：34（g/mL），extracting temperature was 60 ℃.Under these conditions，the maximal yield of anthocyanin reached 1.13 mg/g，which was well matched with thepredicted value. Meanwhile，great variation in the yields of anthocyanins was found among different varieties， ofwhich variety‘heijinggang’had the highest extraction yield of anthocyanins，reaching 1.53 mg/g.