玉米醇溶蛋白膜的应用研究  

Application of zein films

作　　者：鲁亚楠[1] 贾祥祥[1] 刘洁[1] 崔和平[1] 王敏娜[1] 郭兴凤[1] 

机构地区：[1]河南工业大学粮油食品学院,郑州450001

出　　处：《中国油脂》2013年第6期20-23,共4页China Oils and Fats

摘　　要：蛋白膜的阻隔性能可用于控制食品与环境之间的水分、氧气、二氧化碳的交换和风味组分等的迁移,防止食品的品质劣变,延长食品的货架期。以玉米醇溶蛋白为原料制备蛋白膜,对膜的应用研究表明,在不同pH条件下,蛋白膜的水溶性均随着水温的升高呈现增加趋势,而蛋白膜在水中的破裂时间则随着水温的升高而缩短,说明玉米醇溶蛋白膜可以在热水中迅速破裂释放出包容物。采用玉米醇溶蛋白膜包装花生油及脱水蔬菜和调料,在储存125 d之后,花生油的酸值(KOH)和过氧化值分别为0.47 mg/g和5.44 meq/kg,低于国家标准规定的3 mg/g和19.7 meq/kg;调料包和蔬菜包的水分与聚乙烯塑料膜包装的水分以及初始水分数据之间无明显差别,说明玉米醇溶蛋白膜具有作为方便食品的风味料包包装材料的可能性。Barrier properties of protein films can be used to control the transfer of moisture, oxygen, carbon dioxide and flavor components, and prevent quality deterioration and extend the shelf life of food products. Zein films were prepared and the applications of the film were explored. Solubilities of zein films in different pH increased with the increase of water temperature, but the rupture time of zein films reduced. It meant that zein films could release the containing material in a short time in hot water. Further investigation was carried out to verify the feasibility of zein films used as package material of flavorings. Peanut oil, dehydrated vegetable and flavoring powder were sealed in zein films for 125 ,d, and the acid value and peroxide value of peanut oil were 0.47 mgKOH/g and 5.44 meq/kg, below the level of national standards （3 mgKOH/g and 19.7 meq/kg）. There was no sig- nificant difference in the moisture of the dehydrated vegetable and flavoring powder sealed in zein films and polyethylere plastic films during different storage stages, which showed that zein films pos- sessed the probability as package material of flavoring bags of convenience food.

关 键 词：玉米醇溶蛋白膜 水溶性 破裂时间 风味料 应用 

分 类 号：TS201.21[轻工技术与工程—食品科学]