学术
超声波处理玉米磷酸酯淀粉膜液对膜性能的影响
姜燕[1] 张昕[2] 石晶[3] 王新伟[4] 马中苏[5]
[1]吉林大学生物与农业工程学院博士生,长春市130025 [2]吉林大学生物与农业工程学院讲师,长春市130025 [3]吉林大学生物与农业工程学院高级工程师,长春市130025 [4]吉林大学生物与农业工程学院硕士生,长春市130025 [5]吉林大学生物与农业工程学院教授博士生导师,长春市130025
摘 要:
对玉米磷酸酯淀粉基可食膜液进行超声波处理,并对所成膜的抗拉强度、断裂伸长率、透氧率及膜表面微观结构进行了分析。结果表明：超声波处理使膜的抗拉强度、断裂伸长率及阻氧性能提高,膜面均一性也有了一定的改善。在试验范围内,当超声波功率为80W时,对膜液处理50min,膜的性能较佳：抗拉强度为25.53MPa,断裂伸长率为29.07%,透氧率为5.8×10^-6cm^3/（m^2.d.Pa）。[著者文摘]
文章出处:
《农业机械学报》-2007年38卷12期 -105-108页
栏目信息:
文献标识码:
A
Ultrasonic Treatment of Edible Films Forming Solution Based on Corn Anionic Starch
Jiang Yan ,Zhang Xin, Shi Jing, Wang Xinwei ,Ma Zhongsu （Jilin University）
Abstract:
The film forming solution based on corn anionic starch was treated with ultrasonic and the tensile strength, elongation and oxygen permeability were analyzed. Ultrasonic treatment could destroy the structure of the starch grain, shorten the molecule chain, and increase the amylase content. It could also expose out more polar groups, break hydrogen bonds and hydrophobic combining poles inside liquid, and make macromolecule to recombine into non-polar bonds. Under the appropriate treatment power and time, the film could get better mechanical and barrier properties, that is, at 80 W and 50 min, tensile strength of the film is 25.53 MPa, elongation is 29.07%, and oxygen permeability is 5.8× 10^-6 cm^3/（m^2 · d · Pa）, the surface homogeneity has been improved.[著者文摘]
Key words:
Corn anionic starch, Edible films, Ultrasonic, Microstructure
基金资助:
吉林省科技发展计划资助项目（项目编号：20060717）
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