Fatty acid production from a highly CO2 tolerant alga, Chlorocuccum littorale, in the presence of inorganic carbon and nitrate

被引：131

作者：

Ota, Masaki ^{[1
]}

Kato, Yoshitaka ^{[1
]}

Watanabe, Hiromoto ^{[1
]}

Watanabe, Masaru ^{[1
]}

Sato, Yoshiyuki ^{[1
]}

Smith, Richard L., Jr. ^{[1
]}

Inomata, Hiroshi ^{[1
]}

机构：

[1] Tohoku Univ, Res Ctr Supercrit Fluid Technol, Aoba Ku, Sendai, Miyagi 9808579, Japan

来源：

BIORESOURCE TECHNOLOGY | 2009年 / 100卷 / 21期

关键词：

Biofuels; Biomass; Algal oil; Microalgae; CO2; PAVLOVA-VIRIDIS PRYMNESIOPHYCEAE; EICOSAPENTAENOIC ACID; CHLOROCOCCUM-LITTORALE; ENVIRONMENTAL SIGNALS; BIODIESEL PRODUCTION; MEMBRANE-FLUIDITY; MICROALGAE; GROWTH; CULTURE; TEMPERATURE;

D O I：

10.1016/j.biortech.2009.05.048

中图分类号：

S2 [农业工程];

学科分类号：

082806 [农业信息与电气工程];

摘要：

Photoautotrophic fatty acid production of a highly CO2-tolerant green alga Chlorococcum littorale was investigated in the presence of inorganic carbon and nitrate at 295 K and a light intensity of 170 mu mol-photon m(-2) s(-1). CO2 concentration in the bubbling gas was adjusted by mixing pure gas components of CO2 and N-2 to avoid photorespiration and beta-oxidation of fatty acids under O-2 atmosphere conditions. Fatty acid content was almost constant for the CO2 concentrations ranging from 5% to 50% under nitrate-rich conditions corresponding to the logarithmic growth phase. After nitrate depletion, the content drastically increased with a decrease in CO2 concentration. HCO3-/CO2 ratio in the culture media was found to be a controlling factor for fatty acid production after the nitrate limitation phase. For a CO2 concentration of 5%, the fatty acid content was ca. 34 wt.% at maximum, which is comparable with other land plant seed oils. (C) 2009 Elsevier Ltd. All rights reserved.

引用

页码：5237 / 5242

页数：6

共 34 条

[1]

A MATHEMATICAL MODEL FOR CONTINUOUS CULTURE OF MICROORGANISMS UTILIZING INHIBITORY SUBSTRATES [J].