Abstract In this work, a pH-responsive semi-interpenetrating network (semi-IPN) hydrogel consisted of peach gum polysaccharide (PGP) and Auricularia polytricha β-glucans (APP) was developed. Scanning electron microscope and confocal laser scanning microscope showed that PGP-APP hydrogel had a high porous structure with the formation of PGP-APP semi-IPN. Mossbauer and FT-IR spectroscopy revealed that the hydrogels had COO−-Fe3+ cross-links through bridging and unidentate binding. Moreover, the delivery capability of the hydrogel was studied. The in vitro release of encapsulated Lactobacillus plantarum CICC20264 and Lactobacillus salivarius CICC23174 in simulated gastric fluid was negligible (below 2 log10 cfu/g), while viable cells were progressively increased with the degradation of hydrogels at stimulated intestinal conditions and a complete release was reached up to more than 7 log10 cfu/g after 10.25 h incubation. On account of stable and dense structure, PGP-APP semi-IPN hydrogels had a significant positive effect (p

中文翻译：

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基于桃胶多糖的Fe 3+ 交联水凝胶的制备、表征及控释性能

摘要 在这项工作中，开发了一种由桃胶多糖（PGP）和木耳β-葡聚糖（APP）组成的pH响应半互穿网络（semi-IPN）水凝胶。扫描电镜和激光共聚焦扫描显微镜表明，PGP-APP水凝胶具有高孔隙结构，形成了PGP-APP半IPN。Mossbauer 和 FT-IR 光谱表明，水凝胶通过桥接和单齿结合具有 COO--Fe3+ 交联。此外，还研究了水凝胶的输送能力。封装的植物乳杆菌 CICC20264 和唾液乳杆菌 CICC23174 在模拟胃液中的体外释放可忽略不计（低于 2 log10 cfu/g），而活细胞随着水凝胶在受刺激的肠道条件下降解而逐渐增加，并且在孵育 10.25 小时后完全释放达到超过 7 log10 cfu/g。由于结构稳定致密，PGP-APP半IPN水凝胶具有显着的积极作用（p