Microencapsulation of Lactiplantibacillus plantarum BXM2 in Bamboo Shoot-Derived Nanocellulose Hydrogel to Enhance Its Survivability

文献类型： 外文期刊

第一作者： Huang, Yajuan

作者： Huang, Yajuan;Guan, Qiao;Wu, Yirui;Zheng, Chaoyang;Xie, Wen;Chen, Jiaxin;Zheng, Yafeng;Zhong, Lingyue;Huang, Juqing;Wang, Qi

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关键词： nanocellulose; probiotics; hydrogel; viability

期刊名称：GELS （ 影响因子：5.3； 五年影响因子：5.4 ）

ISSN：

年卷期： 2025 年 11 卷 6 期

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收录情况： SCI

摘要： This study presents a novel approach for enhancing the survivability of Lactiplantibacillus plantarum BXM2 using bamboo shoot-derived nanocellulose hydrogels. Nanocellulose hydrogels, composed of cellulose nanofibers (CNFs), cellulose nanocrystals (CNCs), and polyvinyl alcohol (PVA), were developed as protective matrices for probiotics. Fourier transform infrared spectroscopy (FT-IR) and X-ray diffraction (XRD) confirmed the successful formation of hydrogen-bonded networks between PVA and nanocelluloses, while scanning electron microscopy (SEM) revealed that the ternary PVA-CNF-CNC hydrogel exhibited a dense, hierarchical porous structure, effectively encapsulating probiotics with an encapsulation efficiency of 92.56 +/- 0.53%. Under simulated gastrointestinal digestion, the encapsulated probiotics maintained 8.04 log CFU/g viability, significantly higher than that of free bacteria (3.54 log CFU/mL). The hydrogel also enhanced heat tolerance (6.58 log CFU/mL at 70 degrees C) and freeze-drying survival (86.92% viability), outperforming binary systems. During 60-day storage at 4 degrees C and 25 degrees C, encapsulated probiotics retained viability above the critical threshold (>= 6 log CFU/unit), whereas free cells declined rapidly. These findings highlight the potential of PVA-CNF-CNC hydrogel as an efficient delivery system to improve probiotic stability in food applications.

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