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The Hansen theory to choose the best cosolvent for supercritical CO2 extraction of β-carotene from Dunaliella salina

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Calvo Garrido, Lourdes and Tirado Armesto, Diego Felipe (2019) The Hansen theory to choose the best cosolvent for supercritical CO2 extraction of β-carotene from Dunaliella salina. The Journal of Supercritical Fluids, 145 . pp. 211-218. ISSN 0896-8446

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Official URL: https://doi.org/10.1016/j.supflu.2018.12.013

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Abstract

The Hansen solubility theory was used to predict the best cosolvent for supercritical carbon dioxide (sc-CO2) to achieve the selective extraction of β-carotene from Dunaliella salina. Among four organic cosolvents, ethanol was predicted to be the best based on minima Ra values. The predictions were validated through equilibrium data and extraction curves from the microalgae. The addition of ethanol reduced the bubble pressures, and therefore increased the solubility of the β-carotene. With 5% mass fraction, at 318.15 K and 20 MPa, the extraction yield was 25 g carotenoids kg microalgae−1, much more than in pure sc-CO2 (6 g).

Item Type:	Article
Uncontrolled Keywords:	Hansen solubility parameters, Food-grade ingredients, Supercritical fluid extraction, Cosolvent effect, Carotenoids, Microalgae
Subjects:	Sciences > Chemistry Sciences > Chemistry > Chemical engineering Sciences > Chemistry > Materials
ID Code:	76724
Deposited On:	20 Feb 2023 11:57
Last Modified:	20 Feb 2023 12:24

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