Abstract:Using xinjiang red jujube as the material，the clarification effect of jujube juice was studied with pectinase enzymatic hydrolysis and chitosan electrolyte.The experiments were carried out according to the different enzymolysis time，enzymolysis temperature，ratio of material to liquid and pH value，using the single factor test method，separately studied the effects of pectinase and chitosan on the jujube juice clarification，then，the orthogonal experiment between pectinase and chitosan was carried out to determine the optimal conditions.The result showed that the optimal conditions was pectinase concentration 7 mL，temperature 50℃，time 2 h，and the ratio of solid to liquid 1 ∶5（g/mL），and the optimal clarification conditions was chitosan 0.02 g，temperature 50℃，time 30 min，pH 3.