Microalgae have long been recognized as potentially good sources for biofuel production because of their high oil content and rapid biomass production. The oil productivity of many microalgae exceeds the best producing oil crops. In recent years, use of microalgae as an alternative biodiesel feedstock has gained renewed interest from researchers, entrepreneurs, and the general public. Biodiesel produced from microalgae is being investigated as an alternative. The lipid and fatty acid contents of microalgae vary in accordance with culture conditions. The average fatty acid contents of the algal oils are 36% oleic (18:1), 15% palmitic (16:0), 11% stearic (18:0), 8.4% iso-17:0, and 7.4% linoleic (18:2). © Sila Science.