Rapid quantification of microalgal lipids in aqueous medium by a simple colorimetric method

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Identification of novel microalgal strains with high lipid productivity is one of the most important research topics in renewable biofuel research. However, the major bottleneck in the strain screening process is that currently known methods for the estimation of microalgal lipid are laborious and time-consuming. The present study successfully employed sulpho-phospho-vanillin (SPV) colorimetric method for direct quantitative measurement of lipids within liquid microalgal culture. The SPV reacts with lipids to produce a distinct pink color, and its intensity can be quantified using spectrophotometric methods by measuring absorbance at 530 nm. This method was employed for a rapid quantification of intracellular lipid contents within Chlorella sp., Monoraphidium sp., Ettlia sp. and Nannochloropsis sp., all of which were found to have lipid contents ranging in between 10% and 30%. Subsequent analysis of the biomass using gas chromatography confirmed that our protocol is highly accurate (R-2 = 0.99).
Publisher
ELSEVIER SCI LTD
Issue Date
2014-03
Language
English
Article Type
Article
Keywords

NILE RED; VANILLIN REACTION; BIODIESEL; EXTRACTION

Citation

BIORESOURCE TECHNOLOGY, v.155, pp.330 - 333

ISSN
0960-8524
DOI
10.1016/j.biortech.2013.12.077
URI
http://hdl.handle.net/10203/189320
Appears in Collection
CBE-Journal Papers(저널논문)
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