Mass transfer characteristics during ultrasound-assisted osmotic dehydration of button mushroom ().

J Food Sci Technol

1College of Food Science and Engineering/Collaborative, Innovation Center for Modern Grain Circulation and Safety/Key Laboratory of Grains and Oils Quality Control and Processing, Nanjing University of Finance and Economics, Nanjing, 210023 China.

Published: April 2019


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Article Abstract

Button mushroom () slices were dehydrated using ultrasound-assisted osmotic dehydration (UOD), and three osmotic agents including sucrose, glucose and sodium chloride were investigated for their effects on the mass transfer characteristics, average density and microstructure. Different mathematical models were selected to describe the osmotic behaviours, and the effective moisture ( ) as well as solid diffusivities ( ) during UOD were also calculated. The results showed that, during UOD, button mushrooms had the highest values in the sodium chloride solutions, and they had the highest values in the glucose solutions, which indicated that faster moisture and solid transfers could occur in these two osmotic solutions, respectively. Moreover, the Weibull model provided the best fit for the UOD curves of button mushrooms under the study's operating conditions, which showed good predictability for the moisture and solid contents of the button mushrooms during UOD. In addition, sucrose agents were suggested for use in the UOD of button mushrooms due to the better microstructure of the products as well as the appropriate rates of effective moisture and solid diffusivities during UOD. This study provides a theoretical basis for the deep processing of mushrooms and other food products.

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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6443779PMC
http://dx.doi.org/10.1007/s13197-019-03707-8DOI Listing

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