净化淀粉采用12-17组旋流器逆流洗涤工艺除去蛋白质和轻杂物，使淀粉标准达到GB2-92一级国家标准。
The starch is purified to Grade I of GB2-92 National Standard by 12~17 groups of vortex machines with reversal flow cleaning process for removal of the protein and impurities.
实验结果表明：苦豆子盐酸提取物的超滤和稀释过滤能有效除去蛋白质和其他不纯物，透过液中总生物碱的回收率高。
The results showed that the ultrafiltration with discontinuous diafiltration could effectively remove proteins and other impurities. The recovery ratio of alkaloid from the permeate was high.
原因在于牛奶蛋白和果糖分很难从容器里完全除去，当容器贮存有水时，就为微生物的生长提供了环境。
The reason is that milk protein and fruit sugars cannot be adequately removed from these containers and provide an environment for bacterial growth when water is stored in them.
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