高效提取米糟分离蛋白的研究

以水洗、碱溶的办法从米糟中提取大米分离蛋白,实验表明,水洗后的米糟的碱提效率显著提高,在碱提的过程中,温度的影响比较明显。水洗优化工艺条件为:温度70℃、料液比1∶6、水洗3次;碱提的优化条件为:温度65℃、碱浓度0.8%、时间8h、料液比为1∶6。在此条件下产品蛋白质含量为80.1%,米蛋白得率为76.2%。

Study on Extraction of RPI from Rice Dregs

There is a large content of protein in rice dregs, which has many good properties. In this paper, we extracted RPI from rice dregs by using washing and extracting in alkaline condition to get protein and to improve its extra value. The results showed that washing and the temperature of alkaline extraction both played important roles in extracting. The optimal condition of washing is: temperature 70℃,the ratio of stuff and water is 1∶6,washing three times ,the optimal process of alkaline extraction is: temperature 65℃, the concentration of alkali is 0.8%,reaction time is 8 hours, the ratio of stuff and solvent is 1∶6. The content of protein is 80.1%, the radio of protein gained is 76.2%.