Authors :
Fabien Akana Tsopmo; Yvan ArmelKom; Jean Claude Damfeu; Yimen Nacer; Brillant Djomsi W; AbrahamKanmogne; J.R. Lucien Meva’a ; B. GAGA Dadi
Volume/Issue :
Volume 7 - 2022, Issue 8 - August
Google Scholar :
https://bit.ly/3IIfn9N
Scribd :
https://bit.ly/3AUgZLR
DOI :
https://doi.org/10.5281/zenodo.7036559
Abstract :
Several scientific types of research have
already been carried out on yam tuber varieties of the
Dioscorea family such as Dioscorea Retundata, and
Dioscorea Alata. We can mention among others: the
determination of sorption isotherms, their isosteric heat,
and the drying kinetics. Dioscorea Schimperiana is also a
tuber belonging to the same family and is currently a
very popular foodstuff in the West Cameroon region.
This plant, considered a nutritional element, also has
several therapeutic virtues. However, the lack of
knowledge of some of its thermophysical properties,
especially the water content at equilibrium, is a
hindrance to its optimal use. The present study,
therefore, focuses on the determination of desorption
isotherms, which could be useful for the modeling of a
suitable dryer for the drying of Dioscorea Schimperiana.
These desorption isotherms are obtained by the static
gravimetric method, in the range of relative humidity
from 11 to 97% and temperatures of 30°C, 40°C, and
50°C. The Henderson, Harkings and Jura, Halsey,
modified Oswin, and GAB models were used for
smoothing the experimental points. The isotherms
obtained are of type II and characterized by a sigmoidal
shape. The best fits were obtained for the GAB and
Henderson equations.
Keywords :
Dioscorea Schimperiana, water content, the isotherm of desorption, relative humidity, GAB, Henderson
Several scientific types of research have
already been carried out on yam tuber varieties of the
Dioscorea family such as Dioscorea Retundata, and
Dioscorea Alata. We can mention among others: the
determination of sorption isotherms, their isosteric heat,
and the drying kinetics. Dioscorea Schimperiana is also a
tuber belonging to the same family and is currently a
very popular foodstuff in the West Cameroon region.
This plant, considered a nutritional element, also has
several therapeutic virtues. However, the lack of
knowledge of some of its thermophysical properties,
especially the water content at equilibrium, is a
hindrance to its optimal use. The present study,
therefore, focuses on the determination of desorption
isotherms, which could be useful for the modeling of a
suitable dryer for the drying of Dioscorea Schimperiana.
These desorption isotherms are obtained by the static
gravimetric method, in the range of relative humidity
from 11 to 97% and temperatures of 30°C, 40°C, and
50°C. The Henderson, Harkings and Jura, Halsey,
modified Oswin, and GAB models were used for
smoothing the experimental points. The isotherms
obtained are of type II and characterized by a sigmoidal
shape. The best fits were obtained for the GAB and
Henderson equations.
Keywords :
Dioscorea Schimperiana, water content, the isotherm of desorption, relative humidity, GAB, Henderson
