Optimization of growth and fatty acid composition of a unicellular marine picoplankton, Nannochloropsis sp., with enriched carbon sources


Autoria(s): Hanhua Hu; Kunshan Gao
Data(s)

2003

Resumo

A unicellular marine picoplankton, Nannochloropsis sp., was grown under CO2-enriched photoautotrophic or/and acetate-added mixotrophic conditions. Photoautotrophic conditions with enriched CO2 of 2800 mul CO2 l(-1) and aeration gave the highest biomass yield (634 mg dry wt l(-1)), the highest total lipid content (9% of dry wt), total fatty acids (64 mg g(-1) dry wt), polyunsaturated fatty acids (35% total fatty acids) and eicosapentaenoic acid (EPA, 20:5omega3) (16 mg g(-1) dry wt or 25% of total fatty acids). Mixotrophic cultures gave a greater protein content but less carbohydrates. Adding sodium acetate (2 mM) decreased the amounts of the total fatty acids and EPA. Elevation of CO2 in photoautotrophic culture thus enhances growth and raises the production of EPA in Nannochloropsis sp.

Identificador

http://ir.ihb.ac.cn/handle/152342/9744

http://www.irgrid.ac.cn/handle/1471x/59385

Fonte

Hanhua Hu; Kunshan Gao.Optimization of growth and fatty acid composition of a unicellular marine picoplankton, Nannochloropsis sp., with enriched carbon sources,BIOTECHNOLOGY LETTERS,2003,25(5):421-425

Palavras-Chave #Biotechnology & Applied Microbiology #acetate #carbon source #CO2 #eicosapentaenoic acid #Nannochloropsis sp. #polyunsaturated fatty acids
Tipo

期刊论文