Solubility of Β-carotene and co-solutes in supercritical carbon dioxide for ternary systems: Experimental data and correlation

Abel Zúñiga-Moreno, Miguel G. Arenas-Quevedo, Octavio Elizalde-Solis

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11 Scopus citations

Abstract

Ternary carbon dioxide – β-carotene – co-solute systems have been studied with the aim of examining the equilibrium solubility of β-carotene and co-solutes in carbon dioxide at supercritical conditions. Co-solutes were α-tocopherol, palmitic acid, and capsaicin. Experiments were performed by using a semi-continuous type apparatus from 10 to 36 MPa at 308.15 and 328.15 K. Binary β-carotene and co-solute mixture was initially fed to the cell at the same mass ratio (1:1). It was found that β-carotene shows the lowest solubility values for any system at 308.15 K. On the other hand, the co-solute that exhibits the highest solubility was palmitic acid at 328.15 K. Experimental data were modelled using the semi-empirical equations proposed by Chrastil, Kumar and Johnston, and Mendez-Santiago and Teja. Selectivity of carbon dioxide for each co-solute in the presence of β-carotene was also evaluated.

Original languageEnglish
Pages (from-to)66-73
Number of pages8
JournalJournal of Supercritical Fluids
Volume148
DOIs
StatePublished - Jun 2019
Externally publishedYes

Keywords

  • Carbon dioxide
  • Palmitic acid
  • Solubility
  • Ternary systems
  • α-Tocopherol
  • β-carotene

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