蓝莓覆盆子复合饮料的研制

目的]研究蓝莓覆盆子复合饮料的生产工艺,确定最佳的条件。方法]新鲜蓝莓果经酶解、澄清得蓝莓清汁,在单因素试验的基础上,采用正交试验方法确定蓝莓汁澄清和覆盆子浸提的最佳工艺,同时考察蓝莓覆盆子复合饮料的最佳配比。结果]试验得出蓝莓汁澄清的最佳工艺为壳聚糖添加量2.5%,澄清时间2.0 h,澄清温度40℃。覆盆子浸提的最佳因素为果胶酶添加量1.0 g/L,浸提温度50℃,pH 3.8,浸提时间1.5 h。蓝莓覆盆子复合饮料的最佳配比为蓝莓清汁与覆盆子浸提液之比1.5∶9,白砂糖添加量5%,柠檬酸添加量0.05%。结论]蓝莓覆盆子复合饮料营养丰富、口感酸甜、颜色清亮透明。

Preparation of Blueberry and Raspberry Compound Beverage

Objective] To study the production process of blueberry and raspberry compound beverage and determine the optimum production conditions.Method] The blueberry juice was obtained by enzymolysis and clarification.On the basis of single-factor experiment,the optimal process of clarifying blueberry was determined by orthogonal test,the optimal ratio of blueberry and raspberry compound beverage was also investigated.Result] The optimum clarification process was:chitosan 2.5%,clarification time 2.0 h,clarification temperature 40 ℃.The best factors of raspberry extraction were as follows:adding pectinase 1.0 g/L,extraction temperature 50 ℃,pH 3.8,extraction time 1.5 h.The optimum ratio of blueberry raspberry beverage was 1.5∶9,the dosage of white sugar was 5% and the content of citric acid was 0.05%.Conclusion] Blueberry and raspberry compound beverage is rich in nutrition,sweet and sour,and transparent in color.