Characterization of Various Noncovalent Polyphenol-Starch Complexes and Their Prebiotic Activities during In Vitro Digestion and Fermentation
文献类型： 外文期刊
作者： Cai, Ming 1 ; Feng, Jicai 1 ; Wang, Jian 1 ; Chen, Peng 1 ; Ge, Zhiwei 3 ; Liu, Wei 4 ; Sun, Peilong 1 ; Wu, Liehong 4 ; Wu, Jianyong 5 ;
作者机构： 1.Zhejiang Univ Technol, Dept Food Sci & Technol, Hangzhou 310014, Peoples R China
2.Zhejiang Univ Technol, Key Lab Food Macromol Resources Proc Technol Res, China Natl Light Ind, Hangzhou 310014, Peoples R China
3.Zhejiang Univ, Anal Ctr Agrobiol & Environm Sci, Hangzhou 310058, Peoples R China
4.Zhejiang Acad Agr Sci, Hangzhou 310021, Peoples R China
5.Hong Kong Polytech Univ, Dept Food Sci & Nutr, Hung Hom, Kowloon, Hong Kong 999077, Peoples R China
关键词： polyphenol-starch complex; noncovalentinteraction; in vitro digestion; prebiotic activity; in vitro fermentation
期刊名称：JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY （ 影响因子：6.1； 五年影响因子：6.3 ）
ISSN： 0021-8561
年卷期： 2024 年 72 卷 4 期
页码：
收录情况： SCI
摘要： This study explores the structural characterization of six noncovalent polyphenol-starch complexes and their prebiotic activities during in vitro digestion and fermentation. Ferulic acid, caffeic acid, gallic acid, isoquercetin, astragalin, and hyperin were complexed with sweet potato starch (SPS). The polyphenols exhibited high binding capacity (>70%) with SPS. A partial release of flavonoids from the complexes was observed via in vitro digestion, while the phenolic acids remained tightly bound. Molecular dynamics (MD) simulation revealed that polyphenols altered the spatial configuration of polysaccharides and intramolecular hydrogen bonds formed. Additionally, polyphenol-SPS complexes exerted inhibitory effects on starch digestion compared to gelatinized SPS, owing to the increase in resistant starch fraction. It revealed that the different complexes stimulated the growth of Lactobacillus rhamnosus and Bifidobacterium bifidum, while inhibiting the growth of Escherichia coli. Moreover, in vitro fermentation experiments revealed that complexes were utilized by the gut microbiota, resulting in the production of short-chain fatty acids and a decrease in pH. In addition, the polyphenol-SPS complexes altered the composition of gut microbiota by promoting the growth of beneficial bacteria and decreasing pathogenic bacteria. Polyphenol-SPS complexes exhibit great potential for use as a prebiotic and exert dual beneficial effects on gut microbiota.
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