Experimental measurement and correlation of solubility of β-carotene in pure and ethanol-modified subcritical water

Hadi Share Mohammadi; Ali Haghighi Asl; Maryam Khajenoori

doi:10.1016/j.cjche.2020.07.006

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Experimental measurement and correlation of solubility of β-carotene in pure and ethanol-modified subcritical water

Chemical Engineering Thermodynamics | Updated：2026-01-06

- Experimental measurement and correlation of solubility of β-carotene in pure and ethanol-modified subcritical water
- Chinese Journal of Chemical Engineering Vol. 28, Issue 10, Pages: 2620-2625(2020)
- Affiliations：
  
  Faculty of Chemical, Petroleum and Gas Engineering, Semnan University, Semnan 1,Iran,35131-1911
- Author bio：
- Funds：
- DOI：10.1016/j.cjche.2020.07.006
  CLC：
- Published：2020
- Accepted：
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Hadi Share Mohammadi, Ali Haghighi Asl, Maryam Khajenoori. Experimental measurement and correlation of solubility of β-carotene in pure and ethanol-modified subcritical water[J]. Chinese Journal of Chemical Engineering, 2020, 28(10): 2620-2625.
DOI：

Hadi Share Mohammadi, Ali Haghighi Asl, Maryam Khajenoori. Experimental measurement and correlation of solubility of β-carotene in pure and ethanol-modified subcritical water[J]. Chinese Journal of Chemical Engineering, 2020, 28(10): 2620-2625. DOI： 10.1016/j.cjche.2020.07.006.

摘要

Abstract

For the first time

the solubility of β-carotene in pure and ethanol-modified subcritical water (SW) using the static method was determined. The experimental runs were performed at a temperature ranging from 298.15 to 403.15 K and 0-10% (w/w) of ethanol as a modifier at a constant pressure of 5 MPa. Samples were analyzed by UV-vis spectrophotometer. The solubility of β-carotene was found to range from 1.084×10

-8

to 227.1×10

-8

mol fractions in the subcritical water in above mentioned conditions. The obtained β-carotene solubility data were correlated using the linear model and modified Apelblat model. The obtained results showed the modified Apelblat model was better for estimating the solubility of β-carotene in SW. The values of the rootmean-square deviation (RMSD) between experimental and correlated data were calculated and used as the index of validity and accuracy for the model. Also

thermodynamic properties of the solution such as the Gibbs free energy of solution

enthalpy

and entropy of solution were estimated.

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