Optimization of Microwave-Assisted Preparation of Zein Film Using Response Surface Methodology and Its Morphological Structure

doi:10.7506/spkx1002-6630-201610006

Abstract

Abstract:

The aim of this research was to optimize the microwave-assisted preparation of zein film using combination
of one-factor-at-a-time method and response surface methodology. The independent variables were microwave power,
irradiation time and stirrer speed. The tensile strength of zein film was selected as the response. Results indicated that the
maximum tensile strength of 15.16 MPa was obtained when zein solution was microwaved at 300 W and then stirred at
40 r/min, whereas the tensile strength of zein film prepared without using microwave irradiation was 10.23 MPa. Scanning
electron microscopy revealed that microwave treatment could improve obviously the microstructure of zein film as indicated
by smoother film surface. Infrared spectroscopic results indicated that the original molecular structure of zein was not
significantly damaged.

Key words: microwave, zein film, tensile strength, optimal conditions, morphological analysis

CLC Number:

TS206.1

WANG Dawei, ZHANG Ying, QIN Yuting, ZHANG Jing. Optimization of Microwave-Assisted Preparation of Zein Film Using Response Surface Methodology and Its Morphological Structure[J]. FOOD SCIENCE, doi: 10.7506/spkx1002-6630-201610006.

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Optimization of Microwave-Assisted Preparation of Zein Film Using Response Surface Methodology and Its Morphological Structure

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