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Lane MKM, Gilcher EB, Ahrens-Víquez MM, Pontious RS, Wyrtzen NE, Zimmerman JB. Elucidating supercritical fluid extraction of fucoxanthin from algae to enable the integrated biorefinery. BIORESOURCE TECHNOLOGY 2024; 406:131036. [PMID: 38925405 DOI: 10.1016/j.biortech.2024.131036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/08/2024] [Revised: 05/23/2024] [Accepted: 06/23/2024] [Indexed: 06/28/2024]
Abstract
The emerging nutraceutical, fucoxanthin, shows promise as a high-value product to enable the integrated biorefinery. Fucoxanthin can be extracted from algae through supercritical fluid extraction (SFE), but literature does not agree on optimal extraction conditions. Here, a statistical analysis of literature identifies supercritical carbon dioxide (scCO2) density, ethanol cosolvent amount, and polarity as significant predictors of fucoxanthin yield. Novel SFE experiments are then performed using a fucoxanthin standard, describing its fundamental solubility. These experiments establish solvent system polarity as the key knob to tune fucoxanthin recovery from 0% to 100% and give specific operating conditions for targeted fucoxanthin extraction.Further experiments compare extractions on fucoxanthin standard with extractions from Phaeodactylum tricornutum microalgae to elucidate the effect of the algae matrix. Results show selectivity of fucoxanthin over chlorophyll in scCO2 microalgae extractions that was not seen in extractions with ethanol, indicating a benefit of scCO2 to design selective extraction schemes.
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Affiliation(s)
- Mary Kate M Lane
- Chemical and Environmental Engineering, Yale University, 17 Hillhouse Ave, New Haven, CT 06511, USA; Center for Green Chemistry & Green Engineering at Yale, Yale University, 370 Prospect Street, New Haven, CT 06511, USA
| | - Elise B Gilcher
- Center for Green Chemistry & Green Engineering at Yale, Yale University, 370 Prospect Street, New Haven, CT 06511, USA; School of the Environment, Yale University, 195 Prospect St, New Haven, CT 06511, USA
| | - Melissa M Ahrens-Víquez
- Chemical and Environmental Engineering, Yale University, 17 Hillhouse Ave, New Haven, CT 06511, USA
| | - Rachel S Pontious
- Chemical and Environmental Engineering, Yale University, 17 Hillhouse Ave, New Haven, CT 06511, USA
| | - Nora E Wyrtzen
- Environmental Studies, Yale College, 1 Prospect St, New Haven, CT 06511, USA
| | - Julie B Zimmerman
- Chemical and Environmental Engineering, Yale University, 17 Hillhouse Ave, New Haven, CT 06511, USA; Center for Green Chemistry & Green Engineering at Yale, Yale University, 370 Prospect Street, New Haven, CT 06511, USA; School of the Environment, Yale University, 195 Prospect St, New Haven, CT 06511, USA.
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Prediction of solvatochromic parameters of electronic transition energy for characterizing dipolarity/polarizability and hydrogen bonding donor interactions in binary solvent systems of liquid nonpolar-polar mixtures, CO2-expanded liquids and supercritical carbon dioxide with cosolvent. J Mol Liq 2020. [DOI: 10.1016/j.molliq.2020.114394] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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