Please use this identifier to cite or link to this item: https://doi.org/10.1081/DRT-100107494
Title: Effect of osmotic pre-treatment and infrared radiation on drying rate and color changes during drying of potato and pineapple
Authors: Tan, M.
Chua, K.J. 
Mujumdar, A.S. 
Chou, S.K. 
Keywords: Color
Drying time
Hunter scale
Intermittent isotherms
Osmosis
Quality
Sorption
Issue Date: Oct-2001
Source: Tan, M., Chua, K.J., Mujumdar, A.S., Chou, S.K. (2001-10). Effect of osmotic pre-treatment and infrared radiation on drying rate and color changes during drying of potato and pineapple. Drying Technology 19 (9) : 2193-2207. ScholarBank@NUS Repository. https://doi.org/10.1081/DRT-100107494
Abstract: A combination of intermittent infrared and continuous convection heating was used to dry various osmotically pre-treated sample of potato (in solutions of 10%, 20% and 30% NaCl) and pineapple (in solutions of 30%, 50%, 70% Brix). The effect of drying conditions on color changes of potato and pineapple was investigated. The Hunter color scale parameters (redness, yellowness and lightness) were measured to quantify the color changes. With appropriate choice of infrared intermittency as well as osmotic pretreatment, it is possible to reduce the overall color change while maintaining high drying rates. As expected, osmotic pretreatment resulted in a shift in the sorption isotherms for both products.
Source Title: Drying Technology
URI: http://scholarbank.nus.edu.sg/handle/10635/60062
ISSN: 07373937
DOI: 10.1081/DRT-100107494
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