Global warming, as a result of atmospheric CO increase, is regarded as an important universal concern. Microalgae are considered as appropriate microorganisms for CO assimilation. Here we aimed to investigate carbon biofixation ability of two indigenous isolates of Dunaliella spp. (ABRIINW-CH2 and ABRIINW-SH33) under elevated CO concentrations of 10, 20, and 30% (v/v) as well as their lipid content, productivity, and fatty acid profile under adjusted pH conditions. The maximum biomass production and CO biofixation rates were obtained under 10% CO. High CO concentrations were favorable for the accumulation of lipids, lipid productivity, and polyunsaturated fatty acids formation. The highest lipid content and lipid productivity was obtained at 10% CO. The highest fraction of the fatty acids (FA) profile was allocated to omega-3 FAs at 20% CO. Accordingly, these isolates were able to tolerate extremely high CO concentrations and present even enhanced growth as well as formation of valuable products.
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| http://dx.doi.org/10.1007/s00449-020-02350-4 | DOI Listing |
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