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1987年2月县罐头厂在出库糖水葡萄罐头时,发现一批萄萄罐头内有大量鱼鳞状或块状结晶沉淀,严重影响了罐头的感官质量指标,是否能再食用,罐头厂要求检验罐头内的结晶沉淀物并找出其原因。检查罐头外观发现,青色罐头内有大量白色鱼鳞状物,紫红色葡萄罐头内有块状紫色结晶物,大部分在葡萄蒂部粘连。不漏气,不膨听。葡萄罐头内结晶物的鉴别葡萄中主要含有酒石酸,酒石酸的酸式盐易形
In February 1987, the County Cannery Factory found a large number of fish-like or massive crystal precipitates in the cans of grapes exported from canned sweet potato grapes, which seriously affected the sensory quality index of the cans, whether it could be reused or not, and the canning factory required the test Crystallization within the canned sediment and find out the reason. Check the appearance of cans found that there are a large number of blue cans within the white fish scaly, purple grape cans within the massive purple crystals, most of the adhesion in the grape pedicle. Avoid, not swelling. Identification of grape cans within the crystallization of grapes mainly contains tartaric acid, tartaric acid salt form