Extractionof the juice should be done rapidly to avoid oxidation and maceration. It consists of the following operation.
提取葡萄汁应当迅速，避免氧化和浸渍。它包括以下操作。
2
White wine is the product of the fermentation of pure grape juice obtained from grapes by extraction from grapes.
白葡萄酒是从葡萄中提取纯葡萄汁发酵得到的产品。
3
The pineapple produced in Zhanjiang as the raw material and the single factor tests and orthogonal test were used to study the effects of enzyme pretreatment on extraction rate of pineapple juice.