苹果汁的加工.docVIP

? 食 品 科 学 概 论   Apple juice processing Apple juice, sweet and sour taste, in flavor and nutrition, especially vitamin preservation were compared to other products, so, it is apple products are closest to the fresh fruit products. If coupled with a nice little package, consumers welcome. In addition, apple juice in addition to direct for soft drinks, soft drinks, ice cream, can also be used as candy, cakes of raw materials. 1 raw materials selection Choose rich apple flavor, sugar high, sourness and astringency of appropriate, fragrance is thick, rich varieties of fruit juice. Requirements for fruit sound. Processing of fruit and fruit to remove corrupt mildew. The fruit to mature is appropriate, unripe fruit juice Guo Yousheng, sour and sweet, partial less concentration is low; overripe fruit juice of inferior quality, the lack of flavor, squeezing, clarifying and filtering is difficult, juice rate is low. When processing the better fruit mix, complement each other, can make excellent fruit juice. 2 disinfection, washing The fruit into 0.1% potassium permanganate solution soak for 10 - 15 minutes, remove with clean water rinse and drain after shower. The 3 crushing and squeezing, filter The disinfection of the fruit on the crusher broken into 34 mm pieces, then use a juicer to extract juice. The first pressing after the fruit slag mixed pine, into the material to 15% by weight of water, stir well and then pressing time. Pressed juice with mesh or gauze bag filter. The 4 allocation The filtered apple juice. Add sugar and malic acid distribution, so that the solid acid ratio reached 13, 15: 1. 5 boiling, canning Will adjust the good juice heated until the sugar is dissolved after boiling. The hot cans or bag, seal. After the cooling into. In 6 production problems In order to prevent the process of oxidizing discoloration, during crushing operation speed, short time. At the same time, in the crushing process can also join the appropriate amount of malic acid,