Modelling of water loss and solute uptake during osmotic drying of carrots using weibull distribution approach

Sharma A. K., . and Sahoo P. K., . Modelling of water loss and solute uptake during osmotic drying of carrots using weibull distribution approach. pp. 270-274. ISSN 2231-7546

Osmotic drying of carrots (Daucus carota) was carried out at different combinations of temperatures (30 40 and 50C) and concentrations (50 55 and 60) of sucrose solution. Since it is a combination of simultaneous water and solute diffusion process that occurs counter currently mathematical model of both water loss and solute uptake were developed using Weibull distribution approach. The shape parameter () and the scale parameter () of the model were calculated from the experimental values of water loss and solute uptake. The values for water loss and solute uptake for the model were found to be 0.70 and 0.756 respectively and were statistically independent of both temperature and concentration of sucrose solution. The water loss rate constant ( ) was ranged from 0.0049 min-1 to 0.0071 min-1. Similarly the solute uptake rate constant ( ) was ranged from 0.007 min-1 to 0.0118 min-1. Second order quadratic equations with temperature and concentration of sucrose solution were found to fit well in describing the effect of variables on the responses studied. The Weibull parameters and were found adequate to predict the water loss and solute uptake within the range of temperature and concentration of sucrose solution considered.

Full text available from: Official URL: http://www.ifrj.upm.edu.my/25%20(01)%202018/(35).p...

Abstract

Osmotic drying of carrots (Daucus carota) was carried out at different combinations of temperatures (30 40 and 50C) and concentrations (50 55 and 60) of sucrose solution. Since it is a combination of simultaneous water and solute diffusion process that occurs counter currently mathematical model of both water loss and solute uptake were developed using Weibull distribution approach. The shape parameter () and the scale parameter () of the model were calculated from the experimental values of water loss and solute uptake. The values for water loss and solute uptake for the model were found to be 0.70 and 0.756 respectively and were statistically independent of both temperature and concentration of sucrose solution. The water loss rate constant ( ) was ranged from 0.0049 min-1 to 0.0071 min-1. Similarly the solute uptake rate constant ( ) was ranged from 0.007 min-1 to 0.0118 min-1. Second order quadratic equations with temperature and concentration of sucrose solution were found to fit well in describing the effect of variables on the responses studied. The Weibull parameters and were found adequate to predict the water loss and solute uptake within the range of temperature and concentration of sucrose solution considered.

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Item Type:	Article
AGROVOC Term:	Carrots
AGROVOC Term:	Daucus carota
AGROVOC Term:	Osmotic drying
AGROVOC Term:	Drying
AGROVOC Term:	High temperature
AGROVOC Term:	Mathematical models
AGROVOC Term:	Water loss
AGROVOC Term:	Solutes
AGROVOC Term:	Sucrose
AGROVOC Term:	Innovation adoption
Depositing User:	Ms. Suzila Mohamad Kasim
Last Modified:	24 Apr 2025 06:28
URI:	http://webagris.upm.edu.my/id/eprint/24015

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