Journal of Food and Nutritional DisordersISSN: 2324-9323

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Research Article, J Food Nutr Disor Vol: 4 Issue: 4

Modeling of Time Dependent Variation of Moisture Content, Density, Porosity and Specific Volume during Drying of Apple and Potato

Fateh Singh1*, Katiyar VK1 and Singh BP2
1Department of Mathematics, Indian Institute of Technology, Roorkee-247667,India
2Central Potato Research Institute, Shimla-171001, India
Corresponding author : Fateh Singh
Department of Mathematics, Indian Institute of Technology, Roorkee-247667, India
Tel: 9045273950
E-mail: [email protected]
Received: May 27, 2014 Accepted: July 25, 2015 Published: July 31, 2015
Citation: Singh F, Katiyar VK, Singh BP (2015) Modeling of Time Dependent Variation of Moisture Content, Density, Porosity and Specific Volume during Drying of Apple and Potato. J Food Nutr Disor 4:4. doi:10.4172/2324-9323.1000178

Abstract

Modeling of Time Dependent Variation of Moisture Content, Density, Porosity and Specific Volume during Drying of Apple and Potato

In this work, drying experiments were conducted for one variety of apple (Fuji) and three varieties of potato, namely, Kufri Chipsona-1, Kufri Himsona and Kufri Bahar at temperature 60, 70 and 80ºC in the tray dryer. The effect of temperature on drying characteristics and quality parameters of the dried apple and potato slices was determined. For investigating the drying characteristics of apple and potato, an appropriate drying model was presented by modifying existing drying model. A non-linear regression procedure was employed to fit several drying models available in the literature to the experimental data. The models were compared according to chi-square ( χ 2 ), coefficient of determination ( R2 ) and root mean square error (RMSE). Results based on our model had close resemblance with experimental observations. Drying constant was correlated with temperature by using exponential equation.

Keywords: Apple and potato; Moisture content; Drying characteristic; Thin-layer drying; particle density; Bulk density; Porosity; Specific volume

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