Energy problem has become one of the most serious issues all
over the world since energy consumption is inevitable for human
existence. At this point, a large amount of alternative energy
appears. Among them, microbial lipids can be used as a renewable
alternative (biodiesel) to traditional fossil diesel fuel. Biodiesel, a
mixture of fatty acid alkyl esters, can be obtained from various
renewable lipid resources such as vegetable oils, fats and wastes
of cooking oils (
Liu et al., 2008
). However, use of edible oils for bio-
diesel production competes with food production and requires
land and irrigation water; these requirements and the high lignin
content of terrestrial plants reduce the economic viability of this