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Structural elucidation of mulberry leaf oligosaccharide and its selective promotion of gut microbiota to alleviate type 2 diabetes mellitus

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Food Science and Human Wellness 2024年第4期13卷 2161-2173页

作者： Tenggen Hu Yuanshan Yu Jijun Wu Yujuan Xu Gengsheng Xiao Kejing An Erna Li Sentai Liao Yuxiao Zou Sericultural&Agri-Food Research Institute Guangdong Academy of Agricultural Sciences/Key Laboratory of Functional FoodsMinistry of Agriculture and Rural Affairs/Guangdong Key Laboratory of Agricultural Products ProcessingGuangzhou 510610China Huagongliya(Foshan)Technology Industry Co. Ltd.Foshan 528313China Heyuan Branch Guangdong Laboratory for Lingnan Modern AgricultureHeyuan 517001China Zhongkai University of Agriculture and Engineering Guangzhou 510225China

Two oligosaccharide fractions(MLO 2-1 and 2-2)were purified from enzymatic hydrolysate of mulberry leaf *** results of simulated digestion showed that MLO 2-2 was a digestible oligosaccharide,which could be degraded by human digestive juice;while MLO 2-1 possessed the non-digestible property in the upper gastrointestinal tract and performed the function by regulating the gut ***,MLO 2-1 was selected for the further *** structure of MLO 2-1 was elucidated as follow:α-T-Glcp-(1→3)-β-Glcp-(1→5)-α-Araf-(1→5)-α-Araf-1→5)-α-Araf-(1→3)-α-(2-OAc)-*** in vitro fecal fermentation results showed that MLO 2-1 could modulate the composition of gut ***,MLO 2-1 was effectively metabolized by fecal bacteria to produce lactate and short chain fatty acids,especially acetate and *** specific metabolic pathways of MLO 2-1 by gut microbiota were further *** microbiota analysis revealed that MLO 2-1 selectively promoted the growth of Ligilactobacillus murinus,a commensal bacterium presented a reduced level in T2DM *** experiments indicated that MLO 2-1 and *** exhibited hypoglycemic *** results demonstrated that MLO 2-1 might alleviate T2DM by selectively accelerating the proliferation of ***.

关键词： Mulberry leaf oligosaccharide Characterization Gut microbiota lactobacillus murinus Hypoglycemic activity

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