BioChem - DOS

Biomass, total lipid production, and fatty acid composition of the marine diatom Chaetoceros muelleri in response to different CO2 levels

Bioresource technology : biomass, bioenergy, biowastes, conversion technologies, biotransformations, production technologies

Wang, X.W.; Liang, J.R.; Luo, C.S.; Chen, C.P.; Gao, Y.H.

The marine diatom Chaetoceros muelleri grown under air (0.03% CO<SUB>2</SUB>), 10%, 20%, and 30% CO<SUB>2</SUB> conditions was evaluated to determine its potential for CO<SUB>2</SUB> reduction coupled with biodiesel production. The results indicated that C. muelleri grows well with high CO<SUB>2</SUB> aeration levels (10-20%) and is induced to accumulate lipids under 10-30% CO<SUB>2</SUB>. In particular, the highest values of the maximum biomass concentration (1.059gL<SUP>-1</SUP>), maximum specific growth rate (0.868d<SUP>-1</SUP>), maximum biomass productivity (0.272gL<SUP>-1</SUP>d<SUP>-1</SUP>), maximum CO<SUB>2</SUB> biofixation (0.428gL<SUP>-1</SUP>d<SUP>-1</SUP>), and total lipid (43.40% dry weight) and neutral lipid contents were all obtained with 10% CO<SUB>2</SUB> aeration. Moreover, the analysis of the fatty acid composition of C. muelleri revealed the predominance of C<SUB>14</SUB>-C<SUB>18</SUB> fatty acids (>90%) and saturated and monounsaturated fatty acids (>80%) under all CO<SUB>2</SUB> levels. The results suggest that C. muelleri has great potential to biodiesel production using flue gases.

2014

Elsevier Applied Science

0960-8524

161

pp.124-130

10.1016/j.biortech.2014.03.012

http://click.ndsl.kr/servlet/OpenAPIDetailView?keyValue=05787966&target=NART&cn=NART69045406

Chaetoceros muelleri; CO2 reduction; Biomass; Lipids content; Fatty acid composition