Dynamics of lipid accumulation in marine microalga Chlorella vulgaris promoted by iron

Some microalgae are proposed as good candidates for biodiesel production.Lipid accumulation in a marine microalga Chlorella vulgaris can be promoted by high level of Fe3+ concentration in the media.The dynamics of lipids accumulation promoted by iron in Nile red-stained C.vulgaris was traced with spectrofluorimetry method.The effect of iron on the growth and chlorophyll content of C.vulgaris was also measured.The results showed that notable lipid accumulation occurred twice in cells under high iron condition and much more lipid accumulated in the second period.