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Flocculation and Pentadecane Production of a Novel Filamentous Cyanobacterium Limnothrix Sp. Strain SK1-2-1

Flocculation and Pentadecane Production of a Novel Filamentous Cyanobacterium Limnothrix Sp. Strain SK1-2-1

Takuya Sugawara, Mariko Chinzei, Setsuko Numano, Chifumi Kitazaki, Munehiko Asayama

Biotechnol Lett. 2018 May;40(5):829-836.

PMID: 29508163

Abstract:

Objective:
A novel filamentous cyanobacterium, a photosynthesizing microorganism, was isolated from a river, and its unique features of flocculation and pentadecane production were characterized.
Results:
Microscopic observations and a phylogenetic analysis with 16S rDNA revealed that this strain was a Limnothrix species denoted as the SK1-2-1 strain. Auto cell-flocculation was observed when this strain was exposed to a two-step incubation involving a standing cultivation following a shaking preincubation. Flocculation was enhanced by blue light at a wavelength at 470 nm and irradiation for several hours to 1 day. Moreover, the strain exhibiting exponential cell growth may preferentially accumulate alkanes as pentadecane C15H32 alkane, which may be used as jet fuel, at a range of approximately 1% in the dry cell weight of flocculated cells.
Conclusion:
This is the first study on biofuel production using flocculated cells in which the specific manner of production may be regulated by cultivation conditions.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP629629	Pentadecane		629-62-9	Price

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