Contribution au séchage solaire des produits carnés : Modélisation et réalisation d'un séchoir adapté aux pays tropicaux.

Abstract : This study deals with the modeling of heat and mass transfers during solar drying of beef, and between this product and its environment, at the scale of the product and thereafter at the scale of the process. At the scale of the product, desorption isotherm and drying kinetics of fresh beef were determined and modeled to characterize and predict the hygroscopic behavior of the beef during its drying. At the scale of the process, we proposed a model of solar drying of beef, adapted to a solar dryer that was designed and manufactured for the solar drying of beef in tropical environment (Solar dryer of Kilichi). This model was validated by experimental tests conducted in situ, in a tropical country (Cameroon- N'gaoundéré). The impact of solar drying on the quality of the product was investigated through microbiological and biochemical analyzes conducted on beef samples, dried at the laboratory with a solar dryer that was designed and manufactured to obtain a good control of solar drying parameters. These analyzes showed that the impact of solar radiation on the destruction of microorganisms is more significant than that of the drying temperature. Biochemical analysis showed that drying induces a severe lipid oxidation but has no impact on the lipid content of the meat.
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Ahmat Tom. Contribution au séchage solaire des produits carnés : Modélisation et réalisation d'un séchoir adapté aux pays tropicaux.. Génie des procédés. Ecole nationale supérieure d'arts et métiers - ENSAM, 2015. Français. ⟨NNT : 2015ENAM0013⟩. ⟨tel-01179979⟩

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