Isolation and Characterization of Two Microalgal Isolates from Vietnam with Potential for Food, Feed, and Biodiesel Production

Thao Nguyen Luu, Zouheir Alsafra, Amélie Corato, Daniele Corsaro, Hung Anh Le, Gauthier Eppe and Claire Remacle
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Thao Nguyen Luu: Genetics and Physiology of Microalgae, InBios/Phytosystems Research Unit, University of Liege, 4000 Liege, Belgium
Zouheir Alsafra: Laboratory of Mass Spectrometry, MolSys Research Unit, University of Liege, 4000 Liege, Belgium
Amélie Corato: Bioenergetics, InBios/Phytosystems Research Unit, University of Liege, 4000 Liege, Belgium
Daniele Corsaro: CHLAREAS, 12, rue du Maconnais, F-54500 Vandoeuvre-lès-Nancy, France
Hung Anh Le: Institute of Environmental Science, Engineering and Management, Industrial University of Ho Chi Minh City, 71406 Ho Chi Minh, Vietnam
Gauthier Eppe: Laboratory of Mass Spectrometry, MolSys Research Unit, University of Liege, 4000 Liege, Belgium
Claire Remacle: Genetics and Physiology of Microalgae, InBios/Phytosystems Research Unit, University of Liege, 4000 Liege, Belgium

Energies, 2020, vol. 13, issue 4, 1-16

Abstract: Microalgae are promising feedstock for the production of biodiesel and diverse medium- and high-value products such as pigments and polyunsaturated fatty acids. The importance of strain selection adapted to specific environments is important for economical purposes. We characterize here two microalgal strains, isolated from wastewater of shrimp cultivation ponds in Vietnam. Based on the 18S rDNA-ITS region, one strain belongs to the Eustigmatophyceae class and is identical to the Nannochloropsis salina isolate D12 (JX185299.1), while the other is a Chlorophyceae belonging to the Desmodesmus genus, which possesses a S516 group I intron in its 18S rDNA gene. The N. salina strain is a marine and oleaginous microalga (40% of dry weight (DW) at stationary phase) whole oil is rich in saturated fatty acids (around 45% of C16:0) suitable for biodiesel and contains a few percent of eicosapentaenoic acid (C20:5). The Desmodesmus isolate can assimilate acetate and ammonium and is rich in lutein. Its oil contains around 40%–50% α-linolenic acid (C18:3), an essential fatty acid. Since they tolerate various salinities (10% to 35‰), both strains are thus interesting for biodiesel or aquaculture valorization in coastal and tropical climate where water, nutrient, and salinity availability vary greatly depending on the season.

Keywords: microalga; fatty acid; Vietnam; Nannochloropsis; Desmodesmus (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2020
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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