增强剂和交联剂对大豆分离蛋白膜性能的影响

研究了可溶性淀粉、明胶、琼脂、羧甲基纤维素钠(CMC-Na)4种增强剂和谷氨酰胺转胺酶(TG)、单宁、多聚磷酸钠3种交联剂对大豆分离蛋白膜性能的影响.结果表明,膜液加入可溶性淀粉、明胶、琼脂和多聚磷酸钠,不能很好地改善膜的性能;加入CMC-Na和TG酶与单宁,能显著的增加膜的抗拉强度,但是,加入单宁的膜为棕黄色,表观效果较差;加入0.15%TG酶,膜性能最佳.

Effect of Intensifiers and Crosslinking Agents on Properties of Soy Protein Isolate Film

Effect of four kinds of intensifiers and three kinds of crosslinking agents on properties of soy protein isolate film were studied. The four kinds of intensifiers were starch soluble, gelatin, agar and sodium carboxymethylcellulose(CMC-Na). The three kinds of crosslinking agens were transglutaminase(TG),tannic acid and sodium tripolyphosphate. The results showed that the properties of soy protein isolate film were not improved significantly when starch soluble, gelatin, agar, and sodium tripolyphosphate were used, but tensile strength of the film was increased significantly when CMC-Na was used. The TG and the tannic acid could increase the tensile strength significantly, but when the tannic acid was used, the colour of the film was brown-yellow , its appearance was not good, film adding 0.15% TG had the best properties.