Effect of alkali high pressure oxidation modification on extraction rate of soluble dietary fiber from wheat straw
The purpose of this experiment was to improve the extraction rate of soluble dietary fiber(SDF)from wheat straw.The dietary fiber of wheat straw was modified by alkali high pressure oxidation method,and the effects of alkali addition,liquid-solid ratio,high pressure time and H2O2 addition on SDF extraction rate were explored by single factor method,and the treatment process was optimized by orthogonal design.The results showed that the optimal treatment process was 6％of NaOH addition,6 mL/g of liquid-solid ratio,40 min of high pressure time,and 6％of H2O2 addition.It was verified that the extraction rate of SDF under the optimal treatment was 10.29％,which was 181.92％higher than that of untreated wheat straw(3.65％)(P＜0.05).The study indicates that alkali high pressure oxidation can effectively improve the extraction rate of SDF from wheat straw,which is conducive to the further development and utilization of wheat straw dietary fiber in animal production.
wheat strawsoluble dietary fiberalkali high pressure oxidation treatment
国家科技期刊平台
NSTL
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