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当前位置: 首页 > 文章 > TG酶和羟丙基甲基纤维素改善乳清蛋白可食膜性能 食品工业科技 2018 (10) 236-239+250
Position: Home > Articles > TGase and hydroxypropyl methyl cellulose improved properties of whey protein edible film Science and Technology of Food Industry 2018 (10) 236-239+250

TG酶和羟丙基甲基纤维素改善乳清蛋白可食膜性能

作  者：
孙丽娜;姜淑娟;郭莲东;钱方;妥彦峰;牟光庆
单  位：
大连工业大学食品学院
关键词：
乳清蛋白;羟丙基甲基纤维素;转谷氨酰胺酶;可食膜
摘  要：
以乳清浓缩蛋白(WPC)为基料,通过添加羟丙基甲基纤维素(HPMC,添加量为蛋白质量的5%~25%)和转谷氨酰胺酶(TG酶)对膜的性能进行改良,研究HPMC的添加量和转谷氨酰胺酶的交联作用对复合膜性能的影响。结果表明:HPMC能显著提高蛋白膜的抗拉强度,降低复合膜的断裂伸长率(p<0.05),TG酶能有效改善乳清蛋白-羟丙基甲基纤维素复合膜的柔韧性。当HPMC的添加量为乳清蛋白的20%时,复合膜的抗拉强度较好,表观光滑平整。制备WPCHPMC复合膜进行奶茶粉、方便面调料包、油包,苏打饼干的初步包装实验,研究了包装产品在储藏12 d期间质量变化情况。结论:乳清蛋白-羟丙基甲基纤维素复合膜具有一定包装应用潜能。
译  名：
TGase and hydroxypropyl methyl cellulose improved properties of whey protein edible film
作  者：
SUN Li-na;JIANG Shu-juan;GUO Lian-dong;QIAN Fang;TUO Yan-feng;MU Guang-qing;College of Food Science,Dalian Polytechnic University;
关键词：
whey protein;;hydroxypropyl methyl cellulose;;transglutaminase;;edible film
摘  要：
Based on whey protein concentrate( WPC),the properties of the film were investigated by adding hydroxypropyl methyl cellulose( HPMC,5% ~25% weight of protein content) and transglutaminase( TGase).To study the effects of HPMC addition and TGase on the properties of the composite film. Whey protein( WPC) composite films were modified in the presence of hydroxypropyl methyl cellulose( HPMC) and transglutaminase( TGase). The composite films with or without TGase treatment incorporated with different concentrations of HPMC were formed,and the effects of HPMC addition and TGase on the performance of the composite film were studied. The results showed that HPMC could significantly improve the tensile strength of the whey protein film,and decrease the elongation of the composite film( p < 0.05). TGase could significantly improve the flexibility of WPC-HPMC composite film.When the addition of HPMC was 20% of whey protein,the composite film exhibited the better tensile strength and a smooth apparence. The preliminary packing experiments were carried out on the prepared composite film for packaging milk tea powder,instant noodles oil,the relish and soda biscuit,the quality changes of the product packged were studied during storage of 12 d.Research results showed that the whey protein-based hydroxypropyl methyl cellulose composite film has a potential for packaging application.

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