Experimental results are reported for the solubility of β-carotene in six binary mixed solvents formed by 2-propanone or 2-butanone with cyclohexane, hexane, and toluene at 293.15 K. A spectrocolorimeter was used for analysis of the β-carotene concentration. The solubility of β-carotene in pure solvents increases in the order 2-propanone < hexane < 2-butanone < cyclohexane < toluene. In the mixed solvents studied a maximum of β-carotene solubility is observed, except for the toluene + 2-propanone binary solvent.
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Treszczanowicz et al. (2001) studied this question.
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