插层水滑石/果胶纳米复合保鲜膜对鲤鱼的保鲜效果  

Preservation Effect of Intercalated-LDHs/Pectin Composite Preservative Film on Carp

作　　者：马骁 马占玲[1,2] 陈思佳 师嘉澳 励建荣[1,2] MA Xiao;MA Zhan-ling;CHEN Si-jia;SHI Jia-ao;LI Jian-rong(College of Chemistry and Chemical Engineering,Bohai University,Jinzhou 121013,China;National&Local Joint Engineering Research Center of Storage,Processing and Safety Control Technology for Fresh Agricultural and Aquatic Products,Food Safety Key Laboratory of Liaoning Province,Bohai University,Jinzhou 121013,China)

机构地区：[1]渤海大学化学化工学院,辽宁锦州121013 [2]渤海大学辽宁省食品安全重点实验室生鲜农产品贮藏加工及安全控制技术国家地方联合工程研究中心,辽宁锦州121013

出　　处：《包装工程》2020年第17期25-30,共6页Packaging Engineering

基　　金：国家重点研发计划重点项目(2017YFD0400106)。

摘　　要：目的制备一种新型可降解复合保鲜膜,并探究其对鲤鱼的保鲜效果。方法采用离子交换法合成一种新型插层水滑石-脱氢乙酸插层水滑石(MgAl-DHA-LDHs)。以果胶为主要成膜材料,甘油为增塑剂,脱氢乙酸根插层水滑石纳米材料为填充物,合成MgAl-DHA-LDH/果胶复合保鲜膜。分别用X射线衍射(X-ray diffraction,XRD)、红外光谱(Fourier transform infrared spectrometer,FI-IR)分别对插层水滑石和复合保鲜膜进行表征,并研究脱氢乙酸根插层水滑石复合物的添加量对鲤鱼保鲜效果的影响。结果实验结果表明,脱氢乙酸根成功插入水滑石中,当MgAl-DHA-LDHs质量分数为0.2%时鲤鱼的保鲜效果最佳,其菌落总数、硫代巴比妥酸值(TBARs)、挥发性盐基氮(TVB-N)、pH值均低于空白对照组。结论此种复合保鲜膜对鲤鱼具有较好的保鲜效果,可延长货架期5~6d.The work aims to prepare a new type of degradable composite preservative film and study its preservation effect on carp.A new type of intercalated layered double hydrotalcite—dehydroacetic acid intercalated layered double hydrotalcite(MgAl-DHA-LDHs)was synthesized by ion exchange method.MgAl-DHA-LDHs/pectin composite film was prepared with pectin as the matrix,glycerin as the plasticizer and MgAl-DHA-LDHs as filler.The MgAl-DHA-LDHs and the composite preservative film were characterized respectively by X-ray diffraction(XRD)and Fourier transform infrared spectrometer(FI-IR).The effects of the addition of the MgAl-DHA-LDHs on the preservation effect of carp were studied.The results showed that,the dehydroacetate was successfully intercalated into LDHs.The carp was best preserved when the mass fraction of MgAl-DHA-LDHs was 0.2%.The total viable count,thiobarbituric acid value(TBARs),total volatile basic nitrogen value(TVB-N)and pH of the blank group were higher than those of each treatment group.The proposed composite preservative film has good preservation effect on carp,and it can extend the shelf life by about 5-6 d.

关 键 词：脱氢乙酸根插层水滑石 果胶 鲤鱼 保鲜 

分 类 号：S983[农业科学—捕捞与储运]