聚乙烯醇—鱼明胶—龙葵花青素复合膜的制备、结构表征及性能分析  

Preparation,structural characterization,and performance analysis of polyvinyl alcohol/fish gelatin/solanum nigrum anthocyanin composite film

作　　者：欧阳澜澜 邓娜[1,2,3] 尹世鲜 荣智兴 王建辉 OUYANG Lanlan;DENG Na;YIN Shixian;RONG Zhixing;WANG Jianhui(School of Food Science and Bioengineering,Changsha University of Science and Technology,Changsha,Hunan 410114,China;Hunan Provincial Engineering Technology Research Center of Prepared Dishes,Changsha,Hunan 410114,China;Hunan Provincial Engineering Technology Research Center of Intelligent Manufacturing and Quality Safety of Xiang Flavored Compound Seasoning for Chain Catering,Changsha,Hunan 410023,China;Pingjiang Jinzai Food Co.,Ltd.,Yueyang,Hunan 414517,China)

机构地区：[1]长沙理工大学食品与生物工程学院,湖南长沙410114 [2]湖南省预制菜工程技术研究中心,湖南长沙410114 [3]湖南省湘味餐调智造与质量安全工程技术研究中心,湖南长沙410023 [4]平江县劲仔食品有限公司,湖南岳阳414517

出　　处：《食品与机械》2024年第4期90-99,共10页Food and Machinery

基　　金：湖南省科技创新领军人才支持计划项目(编号:2023RC1056);湖南省杰出青年科学基金项目(编号:2021JJ10007);湖南省重点领域研发计划项目(编号:2021NK2015)。

摘　　要：目的:筛选出结构与性能最优的聚乙烯醇—鱼明胶—龙葵花青素(PVA/FG-SNA)复合包装膜。方法:通过正交试验优化PVA-FG膜的制备工艺,采用厚度、水分含量、水蒸气透过率(WVP)、拉伸强度(TS)、断裂伸长率(EB)、傅立叶红外光谱分析(FTIR)、X衍射分析(XRD)、扫描电镜分析(SEM)、热重分析(TG)探究不同质量分数SNA对PVA-FG膜性能和微观结构的影响,并监测PVA/FG-SNA复合膜的pH颜色响应和NH_(3)灵敏度。结果:当PVA-FG复配质量比为60∶40、加热温度为95℃、加热时间为1.5 h时,PVA-FG膜的水溶性为(36.03±2.63)%,WVP为2.91×10^(-4)g·mm/(m^(2)·h·Pa);随着SNA质量分数的增加,PVA-FG膜的厚度、水分含量、WVP和EB随之增加。当SNA质量分数为0.2%时,复合膜的厚度为(0.07±0.01)mm,水分含量为(11.09±0.25)%,WVP为5.45×10^(-4)g·mm/(m^(2)·h·Pa),TS为(21.12±1.07)MPa,EB为(373.77±8.59)%,且复合膜的各组分之间相容性较好。此外,PVA/FG-0.2%SNA膜在NH_(3)气氛条件下的颜色响应良好,可作为pH指示膜。结论:PVA-FG复合基膜的疏水性能和机械性能与SNA质量分数呈负相关,SNA可显著增强膜的pH和NH_(3)敏感性。Objective:Screening of polyvinyl alcohol-fish gelatin-solanum nigrum anthocyanin(PVA/FG-SNA)composite packaging film with optimal structure and properties.Methods:Optimizing the fabrication process of films through orthogonal tests,and using thickness,moisture content,water vapor permeability(WVP),tensile strength(TS),elongation at break(EB),Fourier infrared spectroscopy(FTIR),X-diffraction(XRD),scanning electron microscopy(SEM),and thermogravimetric(TG)analysis to explore the effects of SNAs with different mass fractions on the properties and microstructures of PVA-FG film;In addition,the pH color response and NH_(3)sensitivity of the PVA/FG-SNA composite film were monitored.Results:When the mass ratio of PVA-to-FG,heating temperature and time were 60∶40,95℃,and 1.5 h,respectively.The water solubility and WVP of the PVA-FG film were(36.03±2.63)%,and 2.91×10^(-4)g·mm/(m^(2)·h·Pa),separately.With the increment of SNA dosage,the thickness,moisture content,WVP,and EB of the PVA-FG film also increased.When the mass fraction of SNA was 0.2%,the thickness,moisture content,WVP,TS,and EB of the composite film were(0.07±0.01)mm,(11.09±0.25)%,5.45×10^(-4)g·mm/(m^(2)·h·Pa),(21.12±1.07)MPa,and(373.77±8.59)%,respectively.At the same time the composite film had good compatibility among its components.In addition,the PVA/FG-0.2%SNA film showed good color response under NH_(3)atmosphere conditions,which could be used as a pH-indicating film.Conclusion:This article optimized the water resistance of the PVA-FG composite base film.The hydrophobic and mechanical properties of the PVA-FG composite base film are negatively correlated with the amount of SNA dosage,and SNA can significantly enhance the pH and NH_(3)sensitivity of the film.

关 键 词：龙葵花青素 鱼明胶 聚乙烯醇 复合膜 结构表征 PH响应 

分 类 号：TS206.4[轻工技术与工程—食品科学]