Optimization of clarification process of Ponkan wine
Taking Ponkan wine as the research material,the application of mixed clarifiers (chitosan,bentonite,gelatin) in Ponkan fruit wine was discussed.On the basis of single factors experiment,the mixed clarifier formulation was determined by using D-optimal mixture method,the clarification process and conditions were optimized by using orthogonal experiment.The results showed that optimal mixed clarifier formulation was found to consist of 51% chitosan,23% bentonite and 26% gelatin.The clarifying conditions were as follows:mixed clarifier 1.5 g/L,clarification temperature 25 ℃,clarification time 20 h,stiring speed 150 r/min.Under these conditions,the transmission rate of Ponkan fruit wine was 98.2%,and the content of total ester was 7.36 g/L.