Abstract

AbstractBy autoclaving a watery high amylose corn starch suspension, homogenous and isotrope films were obtained with different processing parameters. The films were used for extensive investigations on the water vapor sorption behavior.It was observed that both the internal structure and the native lipid content of the investigated starch effect the sorption behavior. A good theoretical description of the sorption behavior was obtained with a modified B.E.T.‐equation only for films prepared from a previously defatted starch fraction. In addition it was shown by using this modified B.E.T.‐equation that a temperature dependent prediction is possible for the sorption behavior of defatted starch films.

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