Different Approaches for Mass Transfer Studies on Potato Cylinders and Slices during Solar Drying
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P. P. Tripathy
In this paper, the influence of sample geometry and different solar drying conditions on mass transfer evaluation at food-air interface, hm obtained from different approaches is experimentally investigated. Two different approaches of hm estimation used in the analysis are based on the measurement of moisture loss rate data (direct method) and graphically computed values of drying parameters and moisture diffusion coefficient (indirect method). Drying experiments were performed with potato cylinders and slices of same thickness of 0.01 m with their respective length and diameter of 0.05 m using natural convection mixed-mode solar dryer and open air sun drying conditions. Results of analysis reveal that for each method of estimation, the cylinders vis-à-vis slices produce higher values of hm for both the solar drying conditions. It is also found that the mixed-mode solar drying enhances moisture transfer at food-air interface for each of the sample geometry as expected. Out of the two approaches investigated for hm estimation, the indirect method exhibits lower values of hm and these values are found to be more close to the results reported in the literature. The present analysis also indicates that Chilton-Colburn analogy for heat-mass convection does not hold well in the natural convection air drying of food product.
©2011 Walter de Gruyter GmbH & Co. KG, Berlin/Boston
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- Effective Parameters Consideration in Ohmic Heating Process in Two Phase Static System of Bio-Particle-Liquid
- Proximate Composition of Dry Fermented Turkish Sausage (Sucuk) as Affected by Ripening Period, Nitrite Level and Heat Treatment
- Shorter Communication
- Relative Antioxidant Activity of Common Indian Herbs
- Isolation of Immunoglobulin from Chicken Egg Yolk using Single-Stage Ultrafiltration with 100-kDa Regenerated Cellulose Membranes
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Articles in the same Issue
- Article
- Improving Anti-?-Glucosidase Activity of Douchi Koji Using a Newly Isolated Strain of Bacillus subtilis B2
- Different Approaches for Mass Transfer Studies on Potato Cylinders and Slices during Solar Drying
- Effects of Different Temperatures on Storage Quality of Heavily Salted Cod (Gadus morhua)
- Evaluation of Moisture Diffusion Coefficient of Cylindrical Bodies Considering Shrinkage During Natural Convection Drying
- Effect of Raw Material and Processing Factors on the Production of Effervescent Artichoke (Cynara scolymus L.) Tea Tablets
- Optimization of Culture Conditions on Mycelial Grown in Submerged Culture of Cordyceps militaris
- Suitability of Feature Extraction Methods in Recognition and Classification of Grains, Fruits and Flowers
- Hydrodistillation of Essential Oil from Cymbopogon flexuosus
- A Survey on Packaging Materials and Technologies for Commercial Food Products
- Formulation, Drying and Nutritional Evaluation of Ready-to-Eat Sapota (Achras zapota) Extrudes
- High Hydrostatic Pressure Effect on Natural Microflora, Saccharomyces cerevisiae, Escherichia coli, and Listeria Innocua in Navel Orange Juice
- Effective Parameters Consideration in Ohmic Heating Process in Two Phase Static System of Bio-Particle-Liquid
- Proximate Composition of Dry Fermented Turkish Sausage (Sucuk) as Affected by Ripening Period, Nitrite Level and Heat Treatment
- Shorter Communication
- Relative Antioxidant Activity of Common Indian Herbs
- Isolation of Immunoglobulin from Chicken Egg Yolk using Single-Stage Ultrafiltration with 100-kDa Regenerated Cellulose Membranes
- Determination of the Convective Heat Transfer Coefficient (h) in the Sterilization of Retortable Pouches
- Modelling of Freezing Kinetics of Extract of Betel Leaves (Piper betle L.)
