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    STUDIA CHEMIA - Issue no. 2 / 2013  
         
  Article:   KINETIC STUDY OF CARROTS DRYING .

Authors:  ADINA GHIRIȘAN, SIMION DRĂGAN. 		 
       
         
  Abstract:   The present study presents the drying of carrot slices as thin-layer of 4 mm thickness in a laboratory dryer with the drying air temperature in the range of 40–60 0C. The effect of drying air temperature on the drying kinetics, the drying rates, the effective diffusion coefficients and the activation energy were determined. The effective diffusivity was found to be between 2.6•10-10 and 5.2•10-10 m2/s. The Newton, Page, modified Page and Henderson & Pabis models available in the literature were fitted to the experimental data using nonlinear regression analysis. The models were compared using the coefficient of determination (R2). Henderson &  Pabis model has shown a better fit to the experimental drying data as compared to other two models. 

Keywords: carrot, thin-layer drying, drying modeling, effective moisture diffusivity.
 
         
     
         
         
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