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Drying Characteristics and Assessment of Physicochemical and Microstructural Properties of Dried Culinary Banana Slices

  • Prerna Khawas , Kshirod K. Dash , Arup J. Das and Sankar C. Deka EMAIL logo
Published/Copyright: August 8, 2015

Abstract

This study quantifies the drying characteristics and quality attributes of culinary banana at various temperatures (40–70°C) which exhibited falling rate period. Among the different drying models, Wang and Singh model was found the best fitted model with lowest Ӽ2 and highest R2 values. The coefficients of Wang and Singh model were expressed in nonlinear form as a function of temperature and a new model was developed in which moisture ratio is expressed as a function of time and temperature. Effective moisture diffusivity increased with increase in drying temperature. Scanning electron micrographs showed that samples dried at 70°C produced larger pores which resulted in better rehydration ratio and minimum hardness. The nonenzymatic browning occurred faster at 70°C and in addition, the chemical properties were not significantly affected by drying temperatures.

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Published Online: 2015-8-8
Published in Print: 2015-10-1

©2015 by De Gruyter

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