Journal article
Total lipid and fatty acid composition of seaweeds for the selection of species for oil-based biofuel and bioproducts
GCB Bioenergy, Vol.4(6), pp.919-930
2012
Abstract
We investigated the potential of seaweeds as feedstock for oil-based products, and our results support macroalgae (seaweeds) as a biomass source for oil-based bioproducts including biodiesel. Not only do several seaweeds have high total lipid content above 10% dry weight, but in the brown alga Spatoglossum macrodontum 50% of these lipids are in the form of extractable fatty acids. S. macrodontum had the highest fatty acid content (57.40 mg g -1 dw) and a fatty acid profile rich in saturated fatty acids with a high content of C18:1, which is suitable as a biofuel feedstock. Similarly, the green seaweed Derbesia tenuissima has high levels of fatty acids (39.58 mg g -1 dw), however, with a high proportion of PUFA (n-3) (31% of total lipid) which are suitable as nutraceuticals or fish oil replacements. Across all species of algae the critical parameter of fatty acid content (measured as fatty acid methyl esters, FAME) was positively correlated (R 2 = 0.67) with total lipid content. However, the proportion of fatty acids to total lipid decreased markedly with total lipid content, generally between 30% and 50%, making it an inaccurate measure of the potential to identify seaweeds suitable for oil-based bioproducts. Finally, we quantified within species variation of fatty acids across locations and sampling periods supporting either environmental effects on quantitative fatty acid profiles, or genotypes with specific quantitative fatty acid profiles, thereby opening the possibility to optimize the fatty acid content and quality for oil production through specific culture conditions and selective breeding. © 2012 Blackwell Publishing Ltd.
Details
- Title
- Total lipid and fatty acid composition of seaweeds for the selection of species for oil-based biofuel and bioproducts
- Authors
- B J Gosch (Author) - James Cook UniversityM Magnusson (Author) - James Cook UniversityNicholas A Paul (Author) - James Cook UniversityR de Nys (Author) - James Cook University
- Publication details
- GCB Bioenergy, Vol.4(6), pp.919-930
- Publisher
- Wiley-Blackwell Publishing Ltd.
- Date published
- 2012
- DOI
- 10.1111/j.1757-1707.2012.01175.x
- ISSN
- 1757-1693
- Organisation Unit
- School of Science and Engineering - Legacy; University of the Sunshine Coast, Queensland; School of Science, Technology and Engineering
- Language
- English
- Record Identifier
- 99450935002621
- Output Type
- Journal article
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334 Record Views
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- Agronomy
- Biotechnology & Applied Microbiology
- Energy & Fuels
- Environmental Sciences
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Source: InCites