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Title: Moisture sorption and thermodynamic properties of cassava starch and soy protein-based edible films
Authors: Chinma, C.E
Ariahu, C.C
Alakali, J
Keywords: Cassava starch
Edible film
Moisture sorption
Soy protein concentrate
Issue Date: Nov-2013
Publisher: International Journal of Food Science and Technology
Series/Report no.: 48;
Abstract: Moisture sorption isotherms and thermodynamic properties of cassava starch and soy protein concentrate–based edible films were investigated. Equilibrium moisture content was determined at various temperatures (10, 20, 30 and 40 °C) and relative humidities (17–83%) using gravimetric method, and the results were analysed using four sorption isotherm models. The equilibrium moisture of edible films (both adsorption and desorption modes) decreased with soy protein concentrate addition and temperature at constant water activity. The monolayer moisture content values of cassava starch–soy protein concentrate edible films decreased with increase in temperature and soy protein level. GAB and Oswin models (%RMS ≤10) best described the isotherms of the biofilms with the monolayer moisture contents, isosteric enthalpy and entropy higher for adsorption with significant kinetic compensations. The moisture sorption and thermodynamic properties of cassava starch–soy protein concentrate edible films showed that they are suitable for packaging applications
Description: Part of the correspondence author's doctorate degree research.
URI: http://http://dspace.futminna.edu.ng/jspui/handle/1/4341
Appears in Collections:Food Science and Nutrition

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