水酶法提取米糠油的研究

本文对水酶法提取米糠油进行了研究。结果表明:在蒸汽预处理、淀粉酶用量0.5%、蛋白酶用量0.2%、反应时间6h条件下,经正交实验得到水酶法提取米糠油的最佳工艺为:酶解温度60℃,纤维素酶用量1.2%,pH值5.0,料液比1:5,米糠出油率达到85.76%。在上述影响因素中,纤维素酶用量为主要影响因素,其它依次是料液比、pH值和温度。

Study on Extracting Rice Bran Oil from Rice Bran by Aqueous Enzymatic Method

In this article, the procedure of extracting rice bran oil from rice bran by aqueous enzymatic method was studied.Under the conditions of steam pretreatment, 0.5% of amylase, 0.2% of protease and extraction time 6h, the optimum technicalconditions of enzymatic extraction of rice bran oil were: extraction temperature 60℃, 1.2% of cellulase, pH 5.0 and the ratio ofsubstrate to solution as 1:5. Under these conditions, the yield of rice bran oil was 85.76%. Among the above factors, the quantityof the cellulase used was the most important one, and others in proper order as concentration of substrate, pH and temperatureas the least.