以西瓜皮、葛根和白砂糖为主要原料,经酵母菌发酵后制成西瓜皮葛根保健果酒。通过预试验确定选用葡萄酒安琪酵母进行发酵。采用单因素试验确定了酒精发酵过程中较适宜的糖度为21%~23%,最佳酒精发酵时间为8 d,酵母用量为3%,p H值为3.0~5.0。正交试验确定酒精发酵的最佳工艺组合为:葛根粉与西瓜皮质量比为1∶40,糖度为24%,酵母菌添加量为3%,p H值为5。
Watermelon peel, Pueraria and sugar were used as main raw materials to produce watermelon peel Pueraria fruit wine by yeast fermentation. Determined by preliminary experiments to choose wine angel yeast fer-mentation .The suitable technical parameters were determined by single factor experiments as follows:21%-23%sugar content, 8 d alcoholic fermentation time, 3%addition of yeast and pH value between 3.0-5.0. The optimum technical parameters were summed up as follows by orthogonal experiments:the mass ratio of Pueraria lobata powder to watermelon skin was 1:40;the additive amount of yeast was 3%;the initial sugar concentra-tion was 24%and pH value was 5.