Dunaliella viridis TAV01: A Halotolerant, Protein-Rich Microalga from the Algarve Coast

Tolerance to harsh environmental conditions, high growth rates and an amino acid profile adequate for human consumption are beneficial features observed in Dunaliella viridis TAV01, a novel strain isolated from a salt pond in the Algarve, Portugal. TAV01 was identified down to the species level by m...

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Bibliographic Details
Published in:Applied sciences 2023-02, Vol.13 (4), p.2146
Main Authors: Bombo, Gabriel, Cristofoli, Nathana L., Santos, Tamára F., Schüler, Lisa, Maia, Inês B., Pereira, Hugo, Barreira, Luísa, Varela, João
Format: Article
Language:English
Subjects:
Abiotic stress
Algae
amino acids
Bayesian analysis
Biomass
biotechnology
Carotenoids
Dunaliella
Dunaliella viridis
Environmental conditions
Fatty acids
Food products
Growth rate
Lipids
Natural products
Phenylalanine
Phylogenetics
Phylogeny
pigments
Protein structure
Proteins
Ribosomal DNA
Salinity
Salinity tolerance
Secondary structure
Structural analysis
Sustainable development
Valine
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Summary:Tolerance to harsh environmental conditions, high growth rates and an amino acid profile adequate for human consumption are beneficial features observed in Dunaliella viridis TAV01, a novel strain isolated from a salt pond in the Algarve, Portugal. TAV01 was identified down to the species level by maximum likelihood and Bayesian phylogenetic analyses of the ribosomal internal transcribed spacers one and two regions (ITS1 and ITS-2) and was supported by ITS2 secondary structure analysis. The biochemical profile revealed high protein (35.7 g 100 g−1 DW; 65% higher than the minimum recommended by the World Health Organization) and lipid contents (21.3 g 100 g−1 DW), a relatively higher proportion of the polyunsaturated fatty acids (PUFAs), α-linolenic (26.3% of total fatty acids (TFA)) and linoleic acids (22.8% of TFA), compared to those of other Dunaliella strains, and a balanced essential amino acids profile containing significant levels of leucine, phenylalanine, valine, and threonine. The major carotenoid was lutein, making up over 85% of total carotenoids. The presence of high-quality natural products in D. viridis TAV01 offers the possibility of using this new strain as a valuable biological resource for novel feed or food products as ingredients or supplements.
ISSN:2076-3417
2076-3417
DOI:10.3390/app13042146