双层淀粉膜9种复合方式的性能分析  

Performance analysis of nine kinds of double-layer complex starch film

作　　者：刘斌[1] 徐亚杰[1] 王思予[1] 王莹[1] 李大军[1] 

机构地区：[1]吉林农业大学食品科学与工程学院,长春130118

出　　处：《食品科技》2017年第5期257-261,共5页Food Science and Technology

基　　金：吉林省科技厅重点项目(20150204035NY)

摘　　要：利用淀粉膜双层膜复合技术,能够改进单层膜的适用性。采用玉米原淀粉、醋酸酯淀粉、磷酸酯淀粉、羟甲基淀粉、羟丙基淀粉、海藻酸钠、丙三醇为原料,分别制作5种单层淀粉膜,按照拉伸强度、耐折性、透明度、耐水性、耐油性进行筛选。然后以明胶溶液为黏合剂,分别制作成9种双层复合膜,检测膜厚度、拉伸强度、断裂伸长率、耐折性、透明度、耐水性、耐油性。单层膜中,羟丙基淀粉膜拉伸强度最强为33.99 MPa,醋酸酯淀粉膜透明度、耐水性、耐油性最佳分别为63.33%、48.11%、1.22%,磷酸酯淀粉耐折性最好为59次。复合双层膜中,醋酸酯-羟甲基淀粉膜耐水性最强为37.03%,羟丙基-醋酸酯淀粉膜耐油性最佳为0.73%。The applicability of starch film could be improved by double-layer film complex technique. Five single-films were prepared using corn raw starch, acetate starch, phosphate starch, hydroxymethyl starch, hydroxypropyl starch, sodium alginate and glycerol. All of them were determined by tensile strength, transparency, folding resistance, water and oil resistance. Then the gelatin solution was used as adhesive, and nine kinds of double-layer complex films were prepared and the film thickness, tensile strength, elongation at break, folding resistance, transparency, water and oil resistance were measured. In the single-layer films, the best tensile strength of hydroxypropyl starch film was 33.99 MPa, the best transparency, water resistance and oil resistance of acetate starch film were 63.33%, 48.11%, 1.22%, the best folding resistance of phosphate starch was 59 times. Among the double-layer complex films, the highest water resistance of acetate-hydroxymethyl starch film was 37.03%, and the oil resistance of hydroxypropyl-acetate starch film was 0.73%.

关 键 词：玉米淀粉 改性淀粉 复合膜 机械性能 耐水性 

分 类 号：TS206.4[轻工技术与工程—食品科学]