食品工业科技2025，Vol.46Issue(13)：158-165,8.DOI:10.13386/j.issn1002-0306.2024120144
海藻酸钠-单宁酸-银抑菌水凝胶的制备及性能分析
Preparation and Properties of Sodium Alginate-Tannic Acid-Silver Bacteriostatic Hydrogel
摘要
Abstract
This study focused on the development of polysaccharide-based hydrogels with antioxidant and antibacterial properties.Using sodium alginate(SA),tannic acid(TA),and silver nitrate as raw materials,this study leveraged the reducing power of the hydroxyl and carboxyl functional groups inherently present in SA and TA to reduce the silver ions.The developed process provided sodium alginate-silver(SG)and sodium alginate-tannic acid-silver(STG)hydrogels.A comprehensive suite of analytical techniques,including Fourier transform infrared spectroscopy(FT-IR),X-ray diffraction(XRD),scanning electron microscopy(SEM),and thermogravimetric analysis(TG),was employed to elucidate the structural,morphological,and thermal stability characteristics of the synthesized hydrogels.Furthermore,the antioxidant and antibacterial activities of the hydrogels were also assessed comprehensively.The findings revealed that SA and TA could form a complex stabilized by hydrogen-bonding interactions,and both the carboxyl and hydroxyl groups in the complex participated in the reduction of silver ions.The uniform dispersion of silver particles within the gel matrix,along with the enhanced crosslinking of the polysaccharide chains of SA by TA and silver particles,significantly decreased the adsorbed and bound water content in the hydrogel.This,in turn,influenceed the structural integrity and thermal stability of STG hydrogels.The results of free radical scavenging and bacteriostatic experiments showed that the free radical scavenging rate and inhibition rate of STG hydrogel against E.coli could reach more than 90％,showing good antioxidant and bacteriostatic activity.Notably,the hydrogel preparation method is simple and ecofriendly.This study provides valuable theoretical and experimental insights into the development and application of multifunctional polysaccharide-based hydrogels with antibacterial properties.关键词
海藻酸钠/单宁酸/抑菌/抗氧化/水凝胶Key words
sodium alginate/tannic acid/antibacterial/antioxidant/hydrogel分类
化学工程引用本文复制引用
段冰潮,梅声琪,汪敏,杨博雯,郝红丹,赵阳阳,杜河珍,付怡瑶,王岚,高松,贾国超,孟飞飞..海藻酸钠-单宁酸-银抑菌水凝胶的制备及性能分析[J].食品工业科技,2025,46(13):158-165,8.基金项目
河南省自然科学基金(242300421632) （242300421632）
河南省高等学校重点科研项目(24B150042) （24B150042）
郑州市优秀青年科技人才项目(基于β-葡聚糖与核酸相互作用构建靶向递送载体及治疗结肠癌功能研究,预制菜包装材料及其安全研究) （基于β-葡聚糖与核酸相互作用构建靶向递送载体及治疗结肠癌功能研究,预制菜包装材料及其安全研究）
郑州工程技术学院高层次人才科研启动项目(22078,zggk202105) （22078,zggk202105）
郑州工程技术学院横向项目(基于缓释技术功能性肠道健康制剂的研制及应用) （基于缓释技术功能性肠道健康制剂的研制及应用）
大学生创新创业训练计划项目(202411068001) （202411068001）
郑州工程技术学院开放实验室项目(蛋清水凝胶功能材料的制备与性质研究). （蛋清水凝胶功能材料的制备与性质研究）
