化学
罗伊乳杆菌
乳酸
阿布茨
DPPH
咖啡酸
食品科学
生物高聚物
细菌
多糖
抗氧化剂
益生菌
功能性食品
生物化学
有机化学
生物
乳酸菌
发酵
聚合物
遗传学
作者
Vijayalakshmi Selvakumar,J.S. Kim,Ramachandran Chelliah,Kaliyan Barathikannan,Akanksha Tyagi,Simon-Okomo Aloo,Xiuqin Chen,Pianpian Yan,Lingyue Shan,Deog‐Hwan Oh
标识
DOI:10.1016/j.ijbiomac.2023.127330
摘要
Exopolysaccharides (EPS) are natural, nontoxic, biocompatible and biodegradable macromolecules produced by microorganisms, including the Lactic acid bacteria, to enhance protection against environmental stress conditions. The current study focused on the encapsulation and functional efficiency of EPS produced by probiotic strains isolated from human milk. Among 27 isolates, the potential high EPS-producing strain Limosilactobacillus reuteri KCTC 14626BP was selected based on biofilm production. The structural Characterization of EPS was performed based on FTIR, NMR and functional properties were determined; further, the encapsulation efficiency of EPS was determined with caffeic acid. The results indicate that L. reuteri produced EPS major component consisting of glucose, galactose and arabinose with the ratio of (0.78:0.16: 0.05). The antioxidant efficiency of EPS-LR was determined on DPPH (60.3 %) and ABTS (48.9 %); EPS showed enhanced functional activities. The absence of toxicity was confirmed based on Caenorhabditis elegans. The EPS-loaded Caffeic acid (CA) EPS-LR indicated spherical capsules with rough surfaces, with sizes ranging from 1.39 to 6.75 μm. These findings indicate that EPS-LR can be applied as a bioactive compound and encapsulating material in food, cosmetics, and pharmaceutical industries.
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