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Equilibrium distribution coefficients during osmotic dehydration of apricot

Paper ID Volume ID Publish Year Pages File Format Full-Text
19351 43061 2008 14 PDF Available
Title
Equilibrium distribution coefficients during osmotic dehydration of apricot
Abstract

The effect of initial osmotic solution concentration (40–70%, w/w), solution temperature (25–45 °C), pretreatment before osmotic dehydration (by using chemicals such as K2S2O5, Na2S2O5, ethyl oleat + K2S2O5, ethyl oleat + Na2S2O5 and ethyl oleat + K2CO3) and the ratio of the sample to solution (1/4–1/25) on equilibrium distribution coefficients of apricot were investigated during osmotic dehydration. The various osmotic agents such as sucrose, fructose, glucose, maltodextrin and sorbitol were used in osmotic dehydration of apricot. The distribution coefficients of water ranged from 1.893 to 0.822 g g−1 for various concentrations, 1.302–0.651 g g−1 for different temperatures, 2.013–0.560 g g−1 for application of pretreatment and 1.126–0.822 g g−1 for the ratio of the sample to solution, respectively, while the distribution coefficient for solid varied from 1.473 to 0.719 g g−1 for various concentrations, 0.933–0.719 g g−1 for various temperatures, 1.427–0.453 g g−1 for application of pretreatment and 0.916–0.718 g g−1 for sample to solution ratio, respectively. The distribution coefficient for water decreased with increasing temperature and decreasing sample to solution ratio, and with the increase in syrup concentration it increased or decreased with respect to osmotic agent type. The distribution coefficient for the solid was increased with both an increase in temperature and a decrease in the sample to solution ratio, though it decreases with an increase in syrup concentration. A nonlinear regression of experimental data was carried out to correlate the cumulative relationship between distribution coefficient and syrup concentration. In addition to modeling of the effect of the sample to solution ratio on distribution coefficients of apricots, whole developed models have been tested by using statistical analyses such as χ2, mean bias error (MBE) and root mean square error (RMSE).

Keywords
Apricot; Equilibrium distribution coefficient; Osmotic dehydration; Mass transfer
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Publisher
Database: Elsevier - ScienceDirect
Journal: Food and Bioproducts Processing - Volume 86, Issue 4, December 2008, Pages 254–267
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us