食品科学 ›› 2009, Vol. 30 ›› Issue (19 ): 100-103.doi: 10.7506/spkx1002-6630-200919021

• 基础研究 • 上一篇    下一篇

前处理乙醇浓度对玉米醇溶蛋白膜性质的影响

陈 野,杜 悦,王冠禹   

  1. 天津市食品营养与安全重点实验室,天津科技大学食品工程与生物技术学院
  • 收稿日期:2009-02-01 出版日期:2009-10-01 发布日期:2010-12-29
  • 通讯作者: 陈 野, E-mail:chenye@tust.edu.cn
  • 基金资助:

    天津市农业科技成果转化与推广项目(0502160)

Effect of Ethanol Concentrations in Pre-treatment on Zein Film

CHEN Ye,DU Yue,WANG Guan-yu   

  1. Tianjin Key Laboratory of Food Nutrition and Safety, College of Food Engineering and Biotechnology, Tianjin University of Science
    and Technology, Tianjin 300457, China
  • Received:2009-02-01 Online:2009-10-01 Published:2010-12-29
  • Contact: CHEN Ye, E-mail:chenye@tust.edu.cn

摘要:

研究不同浓度乙醇前处理对成型膜拉伸强度、伸长率、透湿度、吸水率的影响。结果表明:经90% 乙醇前处理成型的玉米醇溶蛋白膜具有良好的机械性质和耐水性;通过扫描电镜观察成型膜具有均一的相;热质量分析的结果表明成型的玉米醇溶蛋白膜在150℃以下保持热稳定性。

关键词: 玉米醇溶蛋白, 前处理, 挤压, SEM, TGA

Abstract:

In this study, the effects of ethanol concentration in pre-treatment on tensile strength, elongation, water vapor permeability and water absorption index of zein films were investigated. Results showed that the extruded zein film with pretreatment using 90% ethanol exhibited better mechanical and water-resistant properties. In addition, uniformed surface morphology in this zein film was observed through scanning electron microscopy (SEM). Moreover, good thermal stability below 150 ℃ was also revealed in this zein film through thermal gravimetric analysis (TGA).

Key words: zein, pre-treatment, extrusion, SEM, TGA

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