Peony seed protein was prepared by alkali extraction and acid preclpltanon process w,m ~,u- coamylase assisted. The results showed that the high purity peony seed protein was obtained with glu- coamylase assisted, which could achieve the requirement of protein isolate. The optimal process condi- tions of preparation of peony seed protein were as follows： solid liquid ratio 1： 10, alkali extraction pH 9.5, acid precipitation pH 4.5, glucoamylase reaction time 30 min, glucoamylase dosage 0. 03% , glucoamylase reaction pH 4. 0. Under the optimal...
