莜麦麸皮不溶性膳食纤维碱法改性工艺优化

Modification optimization of insoluble dietary fiber from naked oat bran

以莜麦麸皮不溶性膳食纤维为原料,采用碱法对原料改性工艺进行了研究。通过单因素试验、正交试验优化改性工艺条件,结果表明,碱法对莜麦麸皮中不溶性膳食纤维的最佳改性工艺为pH值14、碱解温度90℃、碱解时间120 min、料液比1∶60。在此条件下,改性得到的莜麦麸皮水溶性膳食纤维得率可达51.17%。

In order to obtain the modification technology of insoluble dietary fiber, insoluble dietary fiber from naked oat bran was used as raw materials by alkali method in this paper. Optimum conditions were confirmed through single factor experiments and orthogonal tests. It was found that the optimum modification condition of the naked oat bran IDF was as follow： pH value 14, alkaline hydrolysis temperature was 90%, alkaline hydrolysis time was 120 rnin and the ratio of material to water was 1：60. The modification extracting rate of the naked oat bran soluble dietary fiber （SDF） was 51.17 %.