Abstract
The effect of osmotic dehydration pretreatment (25% NaCl, 80 °C, 180 min) on the mass transfer and morphometric characteristics of white mushroom pilei during convective drying (50, 65 and 80 °C, 2.0 m/s) is investigated. Samples were characterized during process in terms of their cross-sectional area, inner-to-outer radius ratio and roundness by using image analysis. Drying data were modeled by an unsteady state 2D-diffusion model where product was considered as a hemispherical shell. A novel shrinkage algorithm was applied to move inner and outer radial boundaries at a different rate to reduce geometry mismatch during simulation and reproduce both the change in size and proportions of product. Results indicated that OD pretreatment affected mass transfer characteristics of product by significantly lowering (p < 0.05) estimated water diffusivities in comparison to those observed in fresh samples (1.1–2.9 × 10−10 m2/s vs. 2.6–7.2 × 10−10 m2/s).
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
