Abstract
The cultivation of microalgae for biodiesel production order emerges as an extremely promising aspect, because the culture of these vegetables microorganisms includes short breeding cycle, smaller areas for planting, and residual biomass rich in protein content. The presence of proteins in biomass and triacylglycerols (TAG) in lipid material (LM) of microalgal Monoraphidium sp. were verified by thermogravimetry (TG). The LM of the microalgae was transesterified (alkaline), the fatty profile evidenced qualitatively and quantitatively by gas chromatography (GC) and used alternatively and quantitatively by TG. The thermal results showed protein content in biomass and TAG in microalgal ML. Chromatographic (GC) data revealed high content of saturated fatty acids (approximately 70 %) being the eicosanoic acid its major constituent (33.7 %), which resulted in a high thermal stability of biodiesel. The conversion in transesterification was approximately 98 % by GC and 97 % by TG, these values being compliant.
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Gomes, A.F., Gomes, M.P.S., Di Souza, L. et al. Thermal and chromatographic characterization of biomass, lipid material, and microalgal biodiesel from Monoraphidium sp.. J Therm Anal Calorim 119, 1861–1866 (2015). https://doi.org/10.1007/s10973-014-4347-5
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DOI: https://doi.org/10.1007/s10973-014-4347-5