Encapsulation of Lactiplantibacillus plantarum in a sodium alginate/pectin/tea polyphenol complex: Enhancing stability and bioactivity for fermented milk products
Wei-Gang Xin , Yu-Hang Jiang , Yu-Ting Zhao , Ming Liang , Xiao-Yong Chen , Shi-Jian Liu , Hua-Yi Suo
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引用次数: 0
Abstract
In this study, Lactiplantibacillus plantarum LPP95, a potential probiotic, was encapsulated in a sodium alginate/pectin/tea polyphenol (SA/PE/TP) complex, and its physicochemical properties, bioactivity, stability, and application potential were investigated. The results showed that tea polyphenol (TP) enriched encapsulated beads (SA/PE/TP/LP) achieved high encapsulation efficiency (96.51 %) without compromising their mechanical properties and stability. The bioactivity analysis revealed that the SA/PE/TP/LP encapsulated beads, formed through TP hydrogen bonding, exhibited good biosafety and a high DPPH radical scavenging rate. Furthermore, adding TP enhanced the enteric dissolution rate and increased the viable counts of L. plantarum with respect to in vitro digestion conditions, bile salt tolerance and refrigerated storage, compared with free-LP. When applied to fermented yogurt, SA/PE/TP/LP significantly reduced pH changes, and improved the sensory, gel structure, and rheological properties of the dairy product. These findings suggest a promising approach to preserving highly active probiotics by adding polyphenols, potentially improving yogurt quality.
期刊介绍:
Food Chemistry publishes original research papers dealing with the advancement of the chemistry and biochemistry of foods or the analytical methods/ approach used. All papers should focus on the novelty of the research carried out.