碱法提取白酒米糟蛋白质工艺的研究

Study on the Process of Extracting Protein from Distiller's Grains in Alkali lye Condition

以白酒米糟为试验材料提取大米蛋白,从碱提取液的pH值、固液比、提取温度和提取时间等要素进行工艺研究。结果表明最佳提取条件是:碱提取液的pH为12、固液比(W/V)为1:11、在60℃恒温搅拌20小时,在此条件下提取米糟蛋白的得率最高,产品蛋白含量可达87.47%。

Distiller＇s grains was used as material to extract rice protein in this paper,the pH of alkali lye,the ratio of raw material to water,the extraction temperature and extraction time were studied as elements of the process conditions.Our research results showed that the best conditions of extraction were as follows： pH is 12,the ratio of raw material to water（W：V） is 1：11,temperature is 60℃ and time is 20 hours.In such conditions the content of rice protein is 87.47%.