响应面法优化复合酶改性米糠膳食纤维的工艺研究

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引用格式：.响应面法优化复合酶改性米糠膳食纤维的工艺研究[J].湖南农业科学，2026（3）：69-74. DOI：10.16498/j.cnki.hnnykx.2026.003.012

中图分类号：TS210.9

文献标识码：A

文章编号：1006-060X（2026）03-0069-06

Optimization of Composite Enzyme Modification Process for Rice Bran Dietary Fiber by Response Surface Methodology

KUANG Yan， LUO Yue-zhong， YAO Qi

（Hunan Chemical Vocational Technology College， Zhuzhou 412000， PRC）

Abstract： To explore approaches for the value-added utilization of rice bran resources， this study employed a composite enzyme （xylanase and cellulase） method to modify rice bran dietary fiber. With the yield of soluble dietary fiber （SDF） as the evaluation indicator， response surface methodology was employed to optimize the key process parameters. The results indicated that the optimal modification conditions for rice bran dietary fiber by the composite enzyme method were as follows： a xylanase to cellulase ratio of 1.8 ： 1， a composite enzyme dosage of 2.3%， enzymatic hydrolysis time of 4 h， and an enzymatic hydrolysis temperature of 45 °C. Under these conditions， the SDF yield reached 8.08%. After modification， the rice bran dietary fiber exhibited a water-holding capacity of 5.8 g/g， an oil-holding capacity of 5.1 g/g， and a swelling capacity of 3.8 mL/g. The composite enzyme method effectively enhanced the water-holding and oil-holding capacities of rice bran dietary fiber compared with the control.

Key words： rice bran dietary fiber; composite enzyme method; modification; response surface optimization

米糠是稻米加工的副产物，过去常被视为低值饲料。（剩余6987字）