肠道菌群对抗性淀粉的降解机制  

The Degradation Mechanism of Resistant Starch by Human Gut Microflora

作　　者：王扶香 莫剑慧 胡新中[1] 马蓁[1] Wang Fuxiang;Mo Jianhui;Hu Xinzhong;Ma Zhen(College of Food Engineering and Nutritional Science,Shaanxi Normal University,Xi'an 710119)

机构地区：[1]陕西师范大学食品工程与营养科学学院,西安710119

出　　处：《中国食品学报》2024年第1期364-378,共15页Journal of Chinese Institute Of Food Science and Technology

基　　金：国家自然科学基金项目(31501405);西安市科技计划项目(23NYGG0067)。

摘　　要：抗性淀粉是指不能被健康人体小肠消化酶酶解,而进入结肠的一类复杂碳水化合物,可通过发酵及促进结肠微生物增殖,带给人体诸多健康益处。人体肠道中微生物种类繁多,这些微生物降解抗性淀粉的机理得到国内外学者的关注。本文结合国内外关于抗性淀粉的研究进展,对抗性淀粉的分类、结构、产生酶抗性的机理及其生理功能进行概述,重点阐述抗性淀粉和肠道菌群的相互作用,探讨2种初级降解菌(即布氏瘤胃球菌和双歧杆菌)对抗性淀粉的降解机制,以及部分次级微生物在降解抗性淀粉中的作用,旨在为开发特定代谢功能的抗性淀粉型复杂碳水化合物,以及合理选择健康食品的目标功能化设计提供理论指导。Resistant starch(RS)refers to a group of complex carbohydrates that cannot be digested and absorbed by small intestine and can be further fermented in the large intestine of healthy individuals.Studies have shown that the consumption of RS confers a series of physiological functions and health benefits.There are many kinds of microorganisms in the intestinal tract,the degradation mechanism of resistant starch by the intestinal microorganisms has attracted increasing attention among researchers.The classification,structure,mechanism and physiological function of resistant starch were reviewed in this paper.The research advances in the interactions between resistant starch and the intestinal microorganisms were also reviewed.On the basis of the above-mentioned aspects,the degradation mechanism of resistant starch by two well-known primary degrading bacteria(including Ruminococcus bromii and Bifidobacterium)and the role of certain secondary microorganisms in degrading the RS were also discussed and reviewed in this paper.This study was expected to provide the theoretical guidance for the development of resistant starch with specific metabolic function as well as the rational selection of healthy food products with targeted functional design.

关 键 词：抗性淀粉 肠道菌群 降解机制 

分 类 号：TS231[轻工技术与工程—粮食、油脂及植物蛋白工程]