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

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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

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

CLC Number: