明胶与葡聚糖复合膜的制备及其对冷藏扇贝品质的影响  

Preparation of Gelatin-Dextran Composite Film and Its Effect on the Quality of Scallops During Cold Storage

作　　者：樊凤娇 廖海露 岳陈林瑞 陈彦初 陈银基 谢宏凯 FAN Fengjiao;LIAO Hailu;YUE Chenlinrui;CHEN Yanchu;CHEN Yinji;XIE Hongkai(College of Food Science and Engineering,Collaborative Innovation Center for Modern Grain Circulation and Safety,Nanjing University of Finance and Economics,Nanjing 210023,Jiangsu,China)

机构地区：[1]南京财经大学食品科学与工程学院,江苏省现代粮食流通与安全协同创新中心,江苏南京210023

出　　处：《食品研究与开发》2024年第10期117-126,共10页Food Research and Development

基　　金：国家自然科学基金青年科学基金项目(32202133、32202032);江苏省高等学校自然科学研究面上项目(22KJB550007、22KJB550006);南京市留学人员科技创新项目;江苏高校优势学科建设工程资助项目。

摘　　要：为抑制脂质氧化和微生物繁殖,延长扇贝货架期,以肉桂醛和α-生育酚为抗菌和抗氧化剂,制备抗菌、抗氧化明胶-葡聚糖复合膜。扫描电镜证实明胶和葡聚糖兼容性较好,添加活性物质导致复合膜产生粗糙、不均匀和多孔的微观结构。X射线衍射和红外光谱显示活性物质增强复合膜的结晶度和疏水性。随着活性物质添加量增加,复合膜的厚度、不透明度、抗氧化能力和抗菌能力显著增加,而水蒸气透过性、拉伸强度和断裂伸长率显著降低。相比于未包装和空白复合膜,1.5%活性复合膜显著提升冷藏扇贝贝柱的化学和微生物稳定性,延长其货架期6d。因此,添加双功能活性成分的明胶-葡聚糖复合膜可以作为一种有效包装材料,用于水产品冷藏品质的控制。An antibacterial and antioxidant gelatin-dextran composite film was prepared using cinnamalde-hyde andα-tocopherol as antibacterial and antioxidant agents to inhibit lipid oxidation and microbial produc-tion and prolong the shelf life of scallops.Scanning electron microscopy confirmed that gelatin and dextran were well compatible,and the addition of active fillers resulted in rough,uneven,and porous microstructures.X-ray diffraction and Fourier transform infrared spectroscopy showed that the active fillers enhanced the crys-tallinity and hydrophobicity of the composite films.The thickness,opacity,and antioxidant and antibacterial ca-pacity of the composite films increased with the increase of active filler concentration,while the water vapor permeability,tensile strength,and elongation at break decreased.The films containing 1.5%of active fillers im-proved the chemical and microbial stability of refrigerated scallop adductor muscles and extended their shelf life by 6 d compared with the unpackaged and control composite films.Therefore,gelatin-dextran composite film with dual-functional active fillers could be used as an effective packaging material to control the quality of aquatic food products during cold storage.

关 键 词：明胶 葡聚糖 肉桂醛 Α-生育酚 双功能活性成分 复合膜 扇贝保鲜 

分 类 号：TS254.4[轻工技术与工程—水产品加工及贮藏工程]