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Utilization of lignocellulosic biomass towards the production of omega-3 fatty acids by the heterotrophic marine microalga Crypthecodinium cohnii
Industrial Biotechnology & Biocatalysis Group, School of Chemical Engineering, National Technical University of Athens.
Industrial Biotechnology & Biocatalysis Group, School of Chemical Engineering, National Technical University of Athens.
Chemical Process and Energy Resources Institute (CPERI), CERTH.
Industrial Biotechnology & Biocatalysis Group, School of Chemical Engineering, National Technical University of Athens.
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2020 (English)In: Bioresource Technology, ISSN 0960-8524, E-ISSN 1873-2976, Vol. 303, article id 122899Article in journal (Refereed) Published
Abstract [en]

Omega-3 fatty acids have become a commodity of high nutritional and commercial value; intensive fishing and its environmental and social cost has led researchers to seeking alternative more sustainable ways of producing them. Heterotrophic microalgae such as Crypthecodinium cohnii, a marine dinoflagellate, have the ability to utilize various substrates and accumulate high amounts of docosahexaenoic acid (DHA). In this work, a mild oxidative organosolv pretreatment of beechwood pulps was employed that allowed up to 95% of lignin removal in a single stage, thus yielding a cellulose-rich solid fraction. The enzymatic hydrolysates were evaluated for their ability to support the growth and lipid accumulation of C. cohnii in batch and fed-batch cultures; the results verified the successful microalgae growth, while DHA reached up to 43.5% of the cell’s total lipids. The proposed bioprocess demonstrated the utilization of non-edible biomass towards high added value food supplements in a sustainable and efficient manner.

Place, publisher, year, edition, pages
Elsevier, 2020. Vol. 303, article id 122899
Keywords [en]
Crypthecodinium cohnii, DHA, Lipid accumulation, Lignocellulosic biomass, Oxidative organosolv pretreatment
National Category
Bioprocess Technology
Research subject
Biochemical Process Engineering
Identifiers
URN: urn:nbn:se:ltu:diva-77907DOI: 10.1016/j.biortech.2020.122899ISI: 000516839600052PubMedID: 32028216Scopus ID: 2-s2.0-85078771060OAI: oai:DiVA.org:ltu-77907DiVA, id: diva2:1404753
Note

Validerad;2020;Nivå 2;2020-02-28 (alebob)

Available from: 2020-02-28 Created: 2020-02-28 Last updated: 2020-03-31Bibliographically approved

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Topakas, Evangelos

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