Nisin/壳聚糖/聚乙烯醇复合膜的性能及猪肉保鲜应用  

Properties of Nisin/Chitosan/Polyvinyl Alcohol Composite Films and the Application in Pork Preservation

作　　者：康星雅 乔丽娜 王楠 韩雪婷 董佳欣 朱硕麒 KANG Xingya;QIAO Lina;WANG Nan;HAN Xueting;DONG Jiaxin;ZHU Shuoqi(Henan University of Animal Husbandry and Economy,Zhengzhou,Henan 450046,China)

机构地区：[1]河南牧业经济学院,河南郑州450046

出　　处：《塑料》2024年第2期11-14,19,共5页Plastics

基　　金：河南省重点研发与推广专项(科技攻关)项目(222102110065);河南省高等学校重点科研项目(22A430023)。

摘　　要：以聚乙烯醇(PVA)为基材、不同质量比的壳聚糖和乳酸链球菌素(Nisin)为抗菌剂,采用溶液混合和流延法制备Nisin/壳聚糖/PVA复合膜,研究复合膜的性能,并将复合膜用于猪肉保鲜,分析保鲜效果。结果表明,壳聚糖、Nisin与PVA三者之间发生了相互作用;壳聚糖和Nisin的加入降低了PVA膜的光学性能,但是,影响较小,并且,能够提升PVA膜的力学性能,降低PVA膜的水蒸气阻隔性能。将PVA复合膜用于猪肉的保鲜,发现,猪肉样品的挥发性盐基氮、pH等增加缓慢,复合膜能够延缓猪肉的腐败变质,将猪肉的保质期延长2 d。当Nisin和壳聚糖的质量比为4∶1的,PVA复合膜的综合性能及猪肉保鲜效果最佳。The Nisin/Chitosan/PVA composite films were prepared with polyvinyl alcohol(PVA)as the base material,chitosan and Nisin with different mass ratios as the antibacterial agent by solution mixing and casting method.Then the properties of the composite films were studied,and the films were used for pork preservation to evaluate the preservation effect.The results showed there was interaction among chitosan,Nisin and PVA.With the addition of chitosan and Nisin,the optical properties of PVA composite films was reduced,but the effect was small,and the mechanical properties was increased while the water vapor barrier property was decreased.Finally,PVA composite films were applied to the preservation of pork.It was found that the volatile basic nitrogen and pH of meat samples increased slowly,which could delay the deterioration of pork and prolong the shelf life of pork for 2 days.When the mass ratio of Nisin to chitosan was 4∶1,the comprehensive performance of PVA composite films and the preservation effect of pork were the best.

关 键 词：NISIN 壳聚糖 聚乙烯醇 力学性能 猪肉保鲜 

分 类 号：TQ325.9[化学工程—合成树脂塑料工业]