Thin Layer Drying Kinetics of Solar-Dried Amaranthus hybridus and Xanthosoma sagittifolium LeavesP.T. Akonor1* and E.A. Amankwah2
- *Corresponding Author:
- P.T. Akonor
Food Processing and Engineering Division
CSIR – Food Research Institute
P. O. Box M30, Accra, Ghana
E-mail: [email protected]
Received date:June 11, 2012; Accepted date: July 23, 2012; Published date: July 27, 2012
Citation: Akonor PT, Amankwah EA (2012) Thin Layer Drying Kinetics of Solar- Dried Amaranthus hybridus and Xanthosoma sagittifolium Leaves. J Food Process Technol 3:174. doi:10.4172/2157-7110.1000174
Copyright: © 2012 Akonor PT, 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.
The aim of the study was to model the solar drying characteristics of the leaves of Amaranthus hybridus and
Xanthosoma sagittifolium dried in thin layers. Fresh leaves were obtained from Centre for Biodiversity Utilisation and Development (CBUD) farms, trimmed into strips of 0.3 cm x 3 cm and loaded into cabinet solar dryers up to a 5 mm layer. Drying was monitored and moisture loss was determined by loss in weight of samples at hourly interval. Drying data were fitted to five thin layer models, namely; Newton’s, Page’s, Modified Page, Handerson and Pabis and Logarithmic models by Non-linear Regression Analysis, the effective diffusivity was also determined for the two leafy vegetables. All five models showed a good fit between observed and predicted values, with Page’s model resulting in the highest r2 and lowest RMSE and X2 and hence the best model to describe the solar-drying characteristics of the two vegetables.