Lipid Production Capacity of a Newly Characterized Cyanobacterial Strain
Synechocystissp. MH01: A Comparative Performance Evaluation of Cyanobacterial Lipid-Based Biodiesel.
IRANIAN JOURNAL OF BIOTECHNOLOGY 2021;
19:e2313. [PMID:
34179185 PMCID:
PMC8217539 DOI:
10.30498/ijb.2021.2313]
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Abstract
Background:
Cyanobacteria have been the focus of extensive researches because of their high potential for the development of new generations
of useful natural compounds with vast applications. For the entire last ten years, a lot of attention has been dedicated to the
cyanobacterial lipids as a main source of valuable materials for clean energy production.
Objectives:
As there is a direct relationship between biofuel properties and compositional characteristics of fatty acids, a selected
lipid-producing cyanobacterial strain was examined and analyzed in terms of fatty acid composition. The biodiesel quality parameters
were carefully examined as well.
Materials and Methods:
A cyanobacterial strain was isolated from waterfalls in the northern part of Iran and identified as Synechocystis
sp. MH01. The fatty acids profile of the selected strain, as tested in various culture conditions, was analyzed by gas chromatography
(GC) and compared with control subjects to further validating the biodiesel quality parameters.
Results:
The autotrophic cultivation of Synechocystissp. MH01 resulted in biomass and lipid productivity of
109 mg.L-1 day-1 and 22.89 mg.L-1 day-1, respectively.
The mixotrophic cultivation of MH01 strain in sucrose-containing medium led to an approximately 1.8 and 1.22 fold increase
in biomass and lipid productivity compared with the autotrophic condition. The addition of glycine to BG11 medium caused
up to ~1.3 and ~1.18 fold increase in biomass and lipid productivity compared with control subjects.
The analysis of qualitative parameters of the biodiesel, as derived from the lipids, indicated that Synechocystis sp. MH01 has a high
ability for lipid production under optimal culture conditions
Conclusions:
It seems feasible to evolve the Synechocystissp. MH01 further particularly for more lipid production as a promising primary
raw material for biofuel production through fine-tuning of medium composition
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