A comparative review of prospective biodiesel reported from lipid sources of two microalgae and two non-traditional oilseeds

Abstract

This review presents two perspectives comparing preparation of biodiesel reported from lipid sources in microalgae Chlorella protothecoides (CP) and Neochloris oleoabundans (NOB) with non-traditional oilseeds (NTOs) Jatropha curcas (JC) and Pongamia pinnata (PP). The first perspective has three sections. The first section compares reported processes for recovering lipids/biomass from microalgae and NTOs. Two published papers. one describing lipid/triacylglycerol recovery from CP and other of enhancing TAG in lipids of NOB is discussed in detail with flow diagrams in the second section. The third section itemizes quantities of lipid/biomass reported from microalgae CP, NOB, enhanced NOB , JC/ PP seed oils with a discussion. The second perspective compares listed fatty acid methyl esters (FAME) from lipids/TAG of microalgae CP, wild type, enhanced TAG and JC/PP seed oils. The yield of TAG, FAME composition, and comparison of CO2 uptake by microalgae and JC/PP plantations favors the two NTOs. Since sustainability of JC plantations is an issue, growing PP plantations is recommended for its ability to capture CO2 emitted from coal-fired power stations, fixing N2 in the soil, and use its detoxified cake as animal feed. Increasing monounsaturation in PP seeds, as in transgenic oilseeds, for prospective biodiesel, is recommended.