TY - JOUR
T1 - Thin Layer Drying Kinetics of Solar-Dried Amaranthus hybridus and
Xanthosoma sagittifolium Leaves
AU - Akonor, P.T. AU - Amankwah, E.A.
JO - Journal of Food Technology
VL - 10
IS - 3
SP - 92
EP - 96
PY - 2012
DA - 2001/08/19
SN - 1684-8462
DO - jftech.2012.92.96
UR - https://makhillpublications.co/view-article.php?doi=jftech.2012.92.96
KW - Drying curves
KW -effective moisture diffusivity
KW -leafy vegetables
KW -mathematical modelling
KW -solar drying
AB - 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 0.3x3 cm and
loaded into cabinet solar dryers up to a 5 mm layer. Drying was monitored and
moisture loss determined by loss in weight of samples at hourly interval. Drying
data were fitted to five thin layer models, namely; Newtons,
Pages, 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 Pages
Model resulting in the highest r2 and lowest RMSE and χ2
and hence the best model to describe the solar-drying characteristics of the
two vegetables.
ER -