Preparation, structural characterization and prebiotic potential of mulberry leaf oligosaccharides
文献类型： 外文期刊
作者： Hu, Teng-Gen 1 ; Wu, Hong 2 ; Yu, Yuan-shan 1 ; Xu, Yu-Juan 1 ; Li, Er-Na 1 ; Liao, Sen-Tai 1 ; Wen, Peng 3 ; Zou, Yu-Xiao 1 ;
作者机构： 1.Guangdong Acad Agr Sci, Sericultural & Agrifood Res Inst, Minist Agr & Rural Affairs, Key Lab Funct Foods,Guangdong Key Lab Agr Prod Pr, Guangzhou, Guangdong, Peoples R China
2.South China Univ Technol, Sch Food Sci & Engn, Guangdong Prov Key Lab Green Proc Nat Prod & Prod, Guangzhou, Peoples R China
3.South China Agr Univ, Coll Food Sci, Guangdong Prov Key Lab Food Qual & Safety, Guangzhou, Peoples R China
期刊名称：FOOD & FUNCTION （ 影响因子：6.317； 五年影响因子：6.375 ）
ISSN： 2042-6496
年卷期： 2022 年 13 卷 9 期
页码：
收录情况： SCI
摘要： The present study shows the purification of a main oligosaccharide fraction (MLO 1-2) from the enzymatic hydrolysate of mulberry leaf polysaccharides by DEAE-52 cellulose and gel column chromatography. The physicochemical properties of MLO 1-2 were characterized. The structure of MLO 1-2 was obtained as follows: alpha-(2-OAc)-Manp-1 -> 2-beta-Glcp-1 -> 4-beta-Glcp-1 -> 4-alpha-Glcp-1 -> 2-alpha-Glcp-1 -> 2-alpha-Galp-1 -> 2-beta-Galp-1 -> 2-beta-Galp-1, which was elucidated by methylation and NMR analysis. The molecular weight of MLO 1-2 showed no significant change after simulated saliva, gastric and intestinal digestion. This indicated that MLO 1-2 could pass through the digestive system without being degraded to safely reach the colon to regulate the gut microbiota. Additionally, MLO 1-2, more than glucose or galactooligosaccharides, promoted the proliferation of Bifidobacterium bifidum, B. adolescentis, Lacticaseibacillus rhamnosus and Lactobacillus acidophilus. Furthermore, the acetic and lactic acid concentrations of bacterial cultures inoculated with MLO 1-2 were higher than those inoculated with glucose and galactooligosaccharide (GOS). These results suggest that MLO 1-2 could be an excellent prebiotic for intestinal flora regulation and the promotion of gut health.
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