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Biorefinery of Dunaliella salina: Sustainable recovery of carotenoids, polar lipids and glycerol
Universidade Nova de Lisboa, Portugal.
A4F Algae for Future, Portugal.
A4F Algae for Future, Portugal.
A4F Algae for Future, Portugal.
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2020 (English)In: Bioresource Technology, ISSN 0960-8524, E-ISSN 1873-2976, Vol. 297, article id 122509Article in journal (Refereed) Published
Abstract [en]

Dunaliella salina is well-known for its high content in carotenoids and glycerol. Nevertheless, Dunaliella salina has also a high content in lipids, including polar lipids, which are suitable for nutraceutical/cosmeceutical applications. This work proposes a sustainable process to maximise the potential of Dunaliella salina for the production of distinct fractions of carotenoids, glycerol, polar lipids and proteins, which may contribute to improve the revenues of the microalgae industry. In this work, extraction with non-hazardous solvents and organic solvent nanofiltration are integrated, in order to obtain added-value products and glycerol. Also, aiming to separate carotenoids from glycerides, a saponification process is proposed. High overall recoveries were obtained for carotenoids (85%), glycerol (86%), polar lipids (94%) and proteins (95%). In order to evaluate the profitability of the proposed biorefinery, an economic assessment was accomplished. Both CAPEX and OPEX (Capital and Operating expenditure) were calculated, likewise the Return of Investment (ROI).

Place, publisher, year, edition, pages
Elsevier Ltd , 2020. Vol. 297, article id 122509
Keywords [en]
Dunaliella salina, Microalgae biorefinery, Non-hazardous solvents, Saponification, Solvent extraction, Solvent resistant membranes, Algae, Bioconversion, Biohazards, Economics, Glycerol, Hydrolysis, Lipids, Microorganisms, Pigments, Proteins, Refining, Solvents, Added value products, Biorefineries, Economic assessments, Hazardous solvents, Organic solvent nanofiltration, Return of investments, Solvent resistant, acylglycerol, carotenoid, heptane, lipid, chemical compound, chemical reaction, dicotyledon, extraction method, membrane, phytochemistry, protein, solvent, Article, biotechnological production, centrifugation, controlled study, dry weight, fractionation, green chemistry, microalga, moisture, molecular weight, nanofiltration, nonhuman, precipitation, priority journal, separation technique
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:ri:diva-43405DOI: 10.1016/j.biortech.2019.122509Scopus ID: 2-s2.0-85075977933OAI: oai:DiVA.org:ri-43405DiVA, id: diva2:1390318
Available from: 2020-01-31 Created: 2020-01-31 Last updated: 2020-01-31Bibliographically approved

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