Gas-Selective Permeability of Soy Protein Isolate Film

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Gas-selective permeability of films obtained from soy protein isolate (SPI) solutions at pH 12 was discussed. The modification treatments (ultrasonic, microwave and ultrasonic/microwave assisted treatment) was carried out to regulate oxygen and carbon dioxide barrier properties of SPI films, further control gas-selective permeability of SPI films in this work. In addition, all films obtained were flexible and transparent. Gas-selective permeability coefficients of SPI film was from 0.39 to 1.25, as indicated that gas-selective permeability of SPI film could be regulated according to the actual needs of food systems.

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17-22

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February 2013

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© 2013 Trans Tech Publications Ltd. All Rights Reserved

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