Characteristics of extracellular hydrocarbon-rich microalga Botryococcus braunii for biofuels production: Recent advances and opportunities

•Characteristics of Botryococcus braunii reviewed in relation to its potential use as cell factory.•A critical analysis of the advances and limits of using B. braunii strains in specific hydrocarbons hyperproduction.•Extracellular matrix characteristics analyzed in relation to control of the extrace...

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Vydáno v:	Process biochemistry (1991) Ročník 51; číslo 11; s. 1866 - 1875
Hlavní autoři:	Jin, Jian, Dupré, Catherine, Yoneda, Kohei, Watanabe, Makoto M., Legrand, Jack, Grizeau, Dominique
Médium:	Journal Article
Jazyk:	angličtina
Vydáno:	Barking Elsevier Ltd 01.11.2016 Elsevier BV Elsevier
Témata:	Bacteria biodiesel Biodiesel fuels Biofuels Biological activity Biomass Biorefineries biorefining Botryococcus braunii Carotenoids Chemical and Process Engineering Co-valorization Engineering Sciences Extracellular matrix fuel production Growth rate Hydrocarbons Liquid hydrocarbons Microalgae Milking oils Oils & fats Peak oil Petroleum production Photobioreactor Photobioreactors Photosynthesis Plants (botany) Polymerization Polysaccharides races Saccharides Squalene Strains (organisms) Sustainable production Synthesis gas Synthetic fuels Co-valorization Extracellular matrix Botryococcus braunii Photobioreactor Liquid hydrocarbons
ISSN:	1359-5113, 1873-3298
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Shrnutí:	•Characteristics of Botryococcus braunii reviewed in relation to its potential use as cell factory.•A critical analysis of the advances and limits of using B. braunii strains in specific hydrocarbons hyperproduction.•Extracellular matrix characteristics analyzed in relation to control of the extracellular hydrocarbon production. Bioproduction of hydrocarbons is one of the challenges facing post-peak oil production in the future. A credible option for the production of sustainable biodiesel or biojetfuels could be microalgae oils. The species Botryococcus braunii has attracted particular interest due to its ability to accumulate large amounts of long-chain hydrocarbons, according to some special characteristics, which differentiate it from other organisms, as well as plants or bacteria. Indeed, the same species includes strains producing a high chimiodiversity of hydrocarbons, strains therefore classified into four races. In addition, this photosynthetic microorganism accumulates high hydrocarbon concentrations, which are trapped in an extracellular matrix, composed of polysaccharides and polymerized hydrocarbons. However, more work is required to understand the biological processes involved in the control of extracellular hydrocarbon accumulation. Recently, despite their slow growth rates, some strains of this microalga were grown relatively efficiently as continuous cultures in controlled photobioreactors. Potential perspectives would depend on current studies focusing on ways to improve the return on investments through either a milking-like process to separate biomass from hydrocarbons production or co-valorization of the biomass residues according to biorefinery approaches to produce compounds of industrial interest, from carotenoids to squalene, and even syngas.
Bibliografie:	ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 14 content type line 23
ISSN:	1359-5113 1873-3298
DOI:	10.1016/j.procbio.2015.11.026