Probiotics encapsulated by calcium pectin/chitosan-calcium pectin/sodium alginate-pectin-whey through biofilm-based microencapsulation strategy and their preventive effects on ulcerative colitis

果胶 壳聚糖 化学 食品科学 生物膜 原位 多糖 海藻酸钙 海藻酸钠 生物化学 微生物学 细菌 生物 有机化学 遗传学
作者
Yu Rao,Jia Deng,Chengyi Zhang,Yunlong Song,Lei Liu
出处
期刊:Food Hydrocolloids [Elsevier BV]
卷期号:158: 110501-110501 被引量:7
标识
DOI:10.1016/j.foodhyd.2024.110501
摘要

Biofilm-based probiotics have emerged as a compelling approach for administering probiotics. Selecting appropriate wall materials for enclosing probiotics in biofilm structure is viewed as an advanced method of microencapsulation. In this study, Lactiplantibacillus paraplanturm LR-1 was enclosed in three different types of wall materials to create calcium pectin beads (CPB), chitosan-calcium pectin beads (C-CPB), and sodium alginate-pectin-whey beads (SPW). The biofilm cells of LR-1 were cultured externally and then encapsulated to create CPB-ex-LR-1, C-CPB-ex-LR-1 and SPW-ex-LR-1. In contrast, LR-1 was cultured within the microcapsules to form biofilms in situ, resulting in CPB-situ-LR-1, C-CPB-situ-LR-1 and SPW-situ-LR-1. The microcapsules displayed a relatively uniform morphology with the water contents below 10%. Nevertheless, there were noticeable edge effects in the distribution of strains within the in situ-type microcapsules. The detection of distinctive peaks unique to Lactiplantibacillus within the microcapsules confirmed the successful encapsulation. Additionally, a decrease in the intensity of the peaks linked to the wall materials indicated the formation of an amorphous structure within the microcapsules. The bacterial concentrations of situ-type microcapsules were found to surpass 10 lg CFU/g. The SPW-situ-LR-1 demonstrated superior tolerance performance, optimal release properties in simulated gastrointestinal fluids, and exceptional stability during the storage period. Additionally, SPW-situ-LR-1 showed similar effectiveness in alleviating colitis compared to fresh Biofilm-LR-1. Both Biofilm-LR-1 and SPW-situ-LR-1 pre-treatments exhibited positive effects on regulation, with SPW-situ-LR-1 administration significantly increasing the presence of Lactobacillus. This study provides valuable insights into the development of the next-generation probiotics.
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