Modelling the Drying Characteristics of Osmosised Coconut Strips at Constant Air TemperatureAgarry SE* and Aworanti OA
Biochemical Engineering and Biotechnology Research Laboratory, Department of Chemical Engineering, Ladoke Akintola University of Technology, Ogbomoso, Nigeria
- *Corresponding Author:
- Dr. Agarry SE
Biochemical Engineering and Biotechnology Research Laboratory
Department of Chemical Engineering
Ladoke Akintola University of Technology, Ogbomoso, Nigeria
E-mail: [email protected]
Received date: February 24, 2012; Accepted date: March 21, 2012; Published date: March 23, 2012
Citation: Agarry SE, Aworanti OA (2012) Modelling the Drying Characteristics of Osmosised Coconut Strips at Constant Air Temperature. J Food Process Technol 3:151. doi:10.4172/2157-7110.1000151
Copyright: © 2012 Agarry SE, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
Drying was performed on osmotically dehydrated coconut meat. The coconut was osmotically pre-treated using three different concentrations of sucrose solutions and immersed in a temperature water bath for 3 h at temperatures of 30, 40 and 50 º C, respectively. The osmosised and non-osmosised (control) coconut strip samples were dried in an oven at a drying temperature of 60ºC. The results showed that drying regime was characteristically in the falling rate period. A regression analysis was used to fit three thin layer drying models to the experimental drying data. The most appropriate model(s) was selected using correlation coefficient (R 2 ) and root mean square error (RMSE). The page model showed a better fit of the experimental drying data (as compared to other models) on the basis that R 2 > 0.99 and RMSE < 0.0130. The effects of the osmotic pre-treatment on the drying data of coconut samples were also explained. The effective moisture diffusivity ranged from 5.74 to 7.88 x 10 -10 m 2 /s for osmosised coconut sample and 5.44 x 10 -10 m 2 /s for non-osmosised coconut sample.