高阻氧性蛋白-多糖-牛皮纸纸基-可食性薄膜复合材料的制备及其工艺优化  

Preparation of high oxygen barrier protein-polysaccharide-kraft paper-based edible film composite material and its process optimization

作　　者：吴浩[1] 雷桥[1,2,3] 曹庆龙 高文婧 王滋 WU Hao;LEI Qiao;CAO Qinglong;GAO Wenjing;WANG Zi(College of Food Science and Technology,Shanghai Ocean University,Shanghai 201306,China;Shanghai Engineering Research Center of Aquatic-Product Processing&Preservation,Shanghai 201306,China;Laboratory of Quality and Safety Risk Assessment for Aquatic Products on Storage and Preservation(Shanghai),Ministry of Agriculture,Shanghai 201306,China)

机构地区：[1]上海海洋大学食品学院,上海201306 [2]上海水产品加工及贮藏工程技术研究中心,上海201306 [3]农业部水产品贮藏保鲜质量安全风险评估实验室(上海),上海201306

出　　处：《食品与发酵工业》2022年第16期175-181,共7页Food and Fermentation Industries

基　　金：上海市教育委员会产学研项目(15cyx69)。

摘　　要：该研究以乳清分离蛋白-酪蛋白酸钠-普鲁兰多糖复合胶体与牛皮纸进行复合,制备高阻隔性生物可降解的食品包装材料,以期开发涂塑纸的替代品。以制品的氧气透过率为目标函数,分析了成膜复合溶液的体积比、pH值、甘油添加量等因素的影响作用,并采用3因素3水平的正交试验进行了工艺优化。结果表明,乳清分离蛋白-酪蛋白酸钠与普鲁兰多糖的体积比为1∶2、pH值为9、甘油质量分数为60%时,复合材料的阻氧性能最优,其氧气透过率低至3.824 cm^(3)/(m^(2)·24h·0.1MPa),此外,其水蒸气透过系数为9.241×10^(-12) g·cm/(cm^(2)·s·Pa),水接触角、油接触角分别为69.9°、48.4°,横向/纵向抗拉强度为13.894 MPa/24.731 MPa,横向/纵向断裂伸长率为8.2%/6.6%,其性能可满足实际的包装应用需求。In this study,whey protein isolate-sodium caseinate-pullulan composite colloid was compounded with kraft paper to pre-pare high-barrier biodegradable food packaging materials to develop alternatives to plastic-coated paper.Taking the oxygen transmission rate of the product as the objective function,the influence of factors such as the volume ratio of the film-forming composite solution,the pH value,and the amount of glycerin added was analyzed,and the process was optimized by orthogonal experiments with three factors and three levels.The results showed that when the volume ratio of whey protein isolate-sodium caseinate to pullulan was 1∶2 at pH 9 and the glycerin content was 60%,the oxygen barrier performance of the composite coated paper was the best.The transmittance was as low as 3.824 cm^(3)/(m^(2)·24h·0.1MPa).In addition,its water vapor transmission coefficient was 9.241×10-^(12) g·cm/(cm^(2)·s·Pa),and the water contact angle and oil contact angle were 69.9°,48.4°respectively.Meanwhile,the transverse/longitudinal tensile strength was 13.894 MPa/24.731 MPa,the transverse/longitudinal elongation at break was 8.2%/6.6%,so its performance can meet the actual packaging application requirements.

关 键 词：复合材料 乳清分离蛋白-酪蛋白酸钠-普鲁兰多糖 pH 氧气透过率 

分 类 号：TS206.4[轻工技术与工程—食品科学]