Oleaginous microorganisms

Figure 3. Stylistic presentation of the course of lipid accumulation by an oleaginous microorganism. The concentration of nitrogen (NH3) in the medium is adjusted so that it becomes exhausted after the first 24 hours growth after this point, the cells enter the lipid accumulation phase in which the excess carbon (e.g., glucose) continues to be assimilated by the cells, and because there is no new cell synthesis because of the lack of nitrogen, the surplus carbon is converted into lipid, which functions as a reserve of carbon and energy for the cells.

Hanezakowski Leman, J. 1997. Oleaginous microorganisms an assessment of the potential, Adv. Appl. Microbiol., 43, 195-243. 

Classical screening of suitable/new oleaginous microorganisms able to convert low-cost carbon sources... 

The accumulated lipid within an oleaginous microorganism is therefore a dynamic storage material it is produced in times of plenty, i.e. carbon sufficiency, and utilized in times of starvation, i.e. carbon deficiency. 

The key enzyme that oleaginous microorganisms possess, and which is not present in the non-oleaginous ones, is ATP citrate lyase (ACL) (see reaction (9.4)). This enzyme serves to provide acetyl-CoA from citrate in the cytosolic compartment of eukaryotic cells and the abundant... 

Ratledge, C., Boulton, C.A. and Evans, C.T. (1984) Continuous culture studies of lipid production by oleaginous microorganisms, in Continuous Culture 8 Biotechnology, Medicine and the Environment, eds. A.C.R. Dean, D.C. Ellwood and C.G.T. Evans, Ellis Horwood, Chichester, pp. 272-291. 

Zhao (2005) described the possibility of SCO production from lignocellulose hydrolysates, the biomass-to-biodiesel three-step plan lignocellulose biomass depolymerization into fermentable sugars, their conversion into microbial lipids by oleaginous microorganisms, and the chemical transformation of their lipids into biodiesel. 

Production of fuels from microbial oil using oleaginous microorganisms... 

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