Differential regulation of fatty acid biosynthesis in two Chlorella species in response to nitrate treatments and the potential of binary blending microalgae oils for biodiesel application

► Fatty acid biosynthesis in Chlorella vulgaris and Chlorella sorokiniana was differentially regulated. ► The potential of blending microalgae oil for biodiesel application was explored. ► Mathematical equations were developed to estimate the oil mass blending ratio of two oils.