Large amount of microalgal oil was efficiently extracted from these heterotrophic.

DHA may derive from fish oil or microalg al oil.

After nitrogen depletion,significant fatty acid quantities were accumulated inside the fungal mycelia(50%~55%,weight oil ratio in dry biomass),resulting in a notable microbial oil production of 18.

The advantage, technology, effect factors in preparation of microbial oils and its utilization were introduced in paper.

The microbial oil richen in AA has been refined.

One option could be the exploitation of carbohydrate-based microorganism greasea,s it consists of similar fatty acids to that of plant oila,nd some organisms may also produce glycerides with high content of poly-unsatu-rated fatty acids(PUFAs).

This thesis summarized the significance and production technology of studying and developing microorganism grease.

The transesterification of microorganism grease with short-chain alcohols,in the presence of base-catalyst,by means of low frequency ultrasound(28 and 40kHz) in order to obtain biodiesel fuel was studied.

Research advance and prospect in microbial oils;

The application and transformation of cellulosic biomass can settle the issue of agriculture,renewable energy and environmental pollution,in which cellulase is responsible for conversion of renewable cellulosic biomass to simple sugars for fermentation to ethanol,?H2 and microbial oils and has been paid more and more attention.

The paper introduces mechanism of producing oils from microorganism,expounds the species of oleaginous microorganism and the factors influencing oil synthesis,and analyzes the application prospect of biodiesel produced from microbial oils.

Research on cellulase cooperative hydrolysis of corn stalk and microbial lipids fermentation from hydrolysates;