大豆蛋白添加量与成膜环境对大豆分离蛋白膜的影响  

Effect of Soy Protein Isolate Dosage and Environment on Performance of Soy Protein Isolate Film

作　　者：郭新华[1] 辛彦[1] 王雷[1] 吴宇梅[1] 

机构地区：[1]暨南大学包装工程研究所,珠海519070

出　　处：《包装工程》2011年第9期5-8,36,共5页Packaging Engineering

基　　金：珠海市科技计划项目(PC20061044)

摘　　要：以大豆分离蛋白(SPI)为原料,通过调整SPI和甘油(GLY)的比例来制备不同配方的可食性SPI包装膜。通过观察薄膜色泽、柔软性等表观情况,测定其机械性能(抗拉强度和断裂伸长率)和阻隔性能(阻湿性和阻氧性),并比较了其性能。结果表明:影响SPI膜性能的主要因素为SPI添加量、SPI与增塑剂的质量比、干燥条件;在pH=9条件下,SPI质量为5.66 g,SPI与GLY质量比为6∶1.5,以自然晾干和烘箱干燥结合法进行干燥时,膜的性能最优。Soy protein isolate（SPI） packaging films were prepared with SPI as raw material through regulating the proportion of SPI and glycerol.The appearances of the films were observed for white degree,flexibility.Their mechanical property,moisture barrier property and oxygen barrier property data were measured and compared.The results showed that the main factors influencing the SPI film performance are SPI dosage,the ratio of SPI to glycerol,and drying condition;the SPI film can acquire the best performance when SPI concentration to 5.66%,SPI： glycerol to 6∶1.5,and the drying method of air combined with oven drying at pH 9.

关 键 词：大豆分离蛋白 可食性包装薄膜 机械性能 阻隔性能 干燥条件 

分 类 号：TB484.6[一般工业技术—包装工程] TS206[轻工技术与工程—食品科学]