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投稿时间：2019-09-05
投稿时间：2019-09-05
中文摘要: 以胡麻渣为原料，通过酶法和碱法两种不同方法提取胡麻渣可溶性膳食纤维（soluble dietary fiber，SDF），并对两种方法提取到的SDF 进行化学组成的测定、色泽的比较以及理化性质的测定。结果表明，碱法提取的SDF 蛋白质、脂肪和可溶性多糖含量显著高于酶法（p＜0.05）。色泽上，碱法提取的SDF 颜色较褐且暗沉，酶法颜色偏黄且明亮。碱法提取SDF 的持水力、持油力、溶胀力均显著高于酶法（p＜0.05）。酶法提取SDF 的阳离子交换能力显著高于碱法（p＜0.05）。研究结果可为胡麻渣的精深加工利用提供参考。
Abstract:Two different extraction methods including enzyme and alkaline methods were used to extract soluble dietary fiber （SDF）from flax residue.The chemical composition，color and physicochemical properties of SDF extracted by two methods were determined.The results showed that the content of SDF protein，fat and soluble polysaccharide extracted by alkali method was significantly higher than that by enzyme method （p＜0.05）.The color of SDF extracted by alkali method was brown and dark，while that by enzyme method was yellow and bright.The water-holding capacity，oil-binding capacity and swelling capacity of alkali extraction of SDF were significantly higher than those of enzyme extraction （p ＜0.05）.The cation exchange capacity of enzyme extraction of SDF was significantly higher than that of alkali extraction （p＜0.05）.The results could provide a reference for deep processing and utilization of flax residue.
keywords: flax residue soluble dietary fiber physical and chemical properties enzyme extraction alkaline extraction
文章编号：201923016 中图分类号： 文献标志码：
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