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首页> 外文期刊>Journal of Nutritional Science and Vitaminology >Prebiotic Oligosaccharides Prepared by Enzymatic Degradation of Dietary Fibers in Rice Grains
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Prebiotic Oligosaccharides Prepared by Enzymatic Degradation of Dietary Fibers in Rice Grains

机译：通过镇静纤维在水稻颗粒中的膳食纤维制备的益生元寡糖

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摘要

Rice are consumed mainly as polished rice grains. In the threshing and polishing processes of paddy rice, a considerable amount of husk and bran are separated as by-products. Rice bran is utilized for oil production, whereas rice husk as well as straw is not fully utilized. Defatted rice bran is rich in proteins and non-digestible polysaccharides, while husk and straw consist mainly of plant cell wall components, including cellulose, hemicel-lulose and pectin. Such non-digestible polysaccharides function in gastrointestinal lumen as dietary fiber, though physiological functions and their application are limited. Non-digestible oligosaccharides have recently been interested as prebiotics from a viewpoint of health benefit via utilization by intestinal microbiota. A diversity of non-digestible polysaccharides in rice bran and husk are good and ecological sources for production of both prebiotic and potentially prebiotic oligosaccharides. In this review, we summarize non-digestible polysaccharides constituting cell wall of rice grains including husk and degradation of the polysaccharides into oligo- and monosaccharides by microbial glycoside hydrolases. Prebiotic potential of such oligosaccharides derived from rice non-digestible polysaccharides are also introduced. Finally, our recent attempt for effective production of cello-oligosaccharides by regulated enzymatic degradation is briefly described.
机译：米饭主要是抛光米粒。在水稻的脱粒和抛光过程中，相当多的壳和麸皮作为副产物分开。米糠用于石油生产，而稻壳以及吸管没有充分利用。脱脂米糠富含蛋白质和不可消化的多糖，而稻壳和稻草主要由植物细胞壁组分组成，包括纤维素，半皮鞋 - 培养和果胶。这种不可消化的多糖在胃肠腔中的功能作为膳食纤维，尽管生理功能及其应用是有限的。从肠道微生物群通过利用，不可消化的寡糖最近与健康益处的角度感兴趣。米糠和稻壳中的不可消化多糖的多样性是益生元和潜在的益生菌糖苷的良好和生态源。在该综述中，我们总结了构成稻粒细胞壁的不可消化多糖，包括通过微生物糖苷水解酶将多糖的壳体和多糖降解到寡糖和单糖中。还引入了这种来自水稻不可消化多糖的这种低聚糖的益生元潜力。最后，简要描述了我们最近通过调节酶促降解通过调节酶促降解的有效生产细胞寡糖的尝试。

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