增塑剂浓度和干燥温度对大豆蛋白膜阻油性能与机械性能的影响  

Effect of Plasticizer Concentration and Drying Temperature on the Oil Resistance and Mechanical Properties of Edible Film from Soy Protein

作　　者：唐亚丽[1,2] 赵伟[3] 卢立新[1,2] 仇越[1] 

机构地区：[1]江南大学机械工程学院包装工程系,江苏无锡214122 [2]中国包装总公司食品包装技术与安全重点实验室,江苏无锡214122 [3]江南大学食品科学与技术国家重点实验室江南大学食品学院,江苏无锡214122

出　　处：《安徽农业科学》2011年第30期18752-18753,18765,共3页Journal of Anhui Agricultural Sciences

基　　金：国家自然科学基金青年科学基金项目(31101376);中央高校基本科研业务费专项资金资助(JUSRP11114)

摘　　要：[目的]研究增塑剂的浓度、干燥温度对大豆蛋白膜性能的影响,以提高膜的阻油性能与机械性能。[方法]以大豆分离蛋白为成膜材料,通过改变增塑剂浓度(1%、2%、3%)以及干燥温度(50℃、60℃、70℃),测定透油系数、抗拉强度和断裂伸长率,分析增塑剂浓度、干燥温度对膜机械性能和阻油性能的影响。[结果]增加增塑剂用量可提高膜的断裂伸长率、降低膜的抗拉强度,但是对阻油性能影响不明显,适宜的增塑剂浓度为2%;对膜液进行热处理,可以提高其抗拉强度和断裂伸长率,但会造成透油系数增加,适宜的成膜温度为60℃。[结论]该研究改进了大豆蛋白膜的阻油性能与机械性能。[Objective] The effects of plasticizer concentration and drying temperature on the oil resistance and mechanical properties of film of soy protein isolate were studied [Method] Soy protein isolate was taken as the film-forming materia.The oil absorption rate,tensile strength and elongation at break were tested through changing the plasticizer concentrations（1%,2%,3%） and drying temperature（50 ℃,60 ℃,70 ℃）.[ Results] When the plasticizer concentration was 2%,the tensile strength and oil resistance were best.When heat treatment was done on the membrane liquid,the suitable drying temperature was 60 ℃.[Conclusion] This study improved the mechanical properties and barrier properties of soy protein isolate film.

关 键 词：大豆分离蛋白 可食性膜 吸油率 机械性能 阻隔性能 

分 类 号：S37[农业科学—农产品加工]