Synergistic effect of growth conditions and organic carbon sources for improving biomass production and biodiesel quality by the microalga Choricystis minor var. minor

dc.creatorOliveira, Carlos Yure Barbosa de
dc.creatorD'Alessandro, Emmanuel Bezerra
dc.creatorAntoniosi Filho, Nelson Roberto
dc.creatorLopes, Rafael Garcia
dc.creatorDerner, Roberto Bianchini
dc.date.accessioned2024-05-21T12:33:41Z
dc.date.available2024-05-21T12:33:41Z
dc.date.issued2021
dc.description.abstractIn the search for microalgae species with potential for biodiesel production, Choricystis minor var. minor has been seen as a promising source of biomass due to its high lipid content and the satisfactory characteristics of its fatty acid methyl esters (FAMEs). For this reason, the objective of this study was to investigate the synergistic effect of growth conditions and organic carbon sources on cultivation of this microalga. To do so, experimental cultivations were conducted in photoautotrophic, heterotrophic and mixotrophic metabolisms using glucose, fructose, glycerol or sucrose – in growth conditions that use organic carbon. Thus, growth parameters of the cultures were evaluated and at the end of the cultivations, FAMEs yield and profile were determined by gas chromatography, the efficiency of carbon conversion into biomass was evaluated and a microbial analysis was conducted. Regarding growth conditions, the findings have confirmed that, regardless of the organic carbon source used, the heterotrophic and mixotrophic metabolisms can present advantages over the photoautotrophic one. In addition, biomass production was higher with the use of glucose than with other organic carbon sources, regardless of growth condition (heterotrophic or mixotrophic). Moreover, cultivations with the addition of CO2 have converted carbon into biomass less efficiently. On the other hand, photoautotrophic cultures presented the lowest bacterial load. In comparison to photoautotrophic and mixotrophic, heterotrophic cultures have led to lower FAMEs content and higher yields of unsaturated fatty acids. The most satisfactory FAMEs profile for biodiesel production was obtained with mixotrophic growth using fructose.
dc.identifier.citationOLIVEIRA, Carlos Yure B. et al. Synergistic effect of growth conditions and organic carbon sources for improving biomass production and biodiesel quality by the microalga Choricystis minor var. minor. Science of The Total Environment, Amsterdam, v. 759, e143476, 2021. DOI: 10.1016/j.scitotenv.2020.143476. Disponível em: https://www.sciencedirect.com/science/article/abs/pii/S0048969720370078?via%3Dihub. Acesso em: 26 abr. 2024.
dc.identifier.doi10.1016/j.scitotenv.2020.143476
dc.identifier.issn0048-9697
dc.identifier.issne- 1879-1026
dc.identifier.urihttps://www.sciencedirect.com/science/article/abs/pii/S0048969720370078?via%3Dihub
dc.language.isoeng
dc.publisher.countryHolanda
dc.publisher.departmentInstituto de Química - IQ (RMG)
dc.rightsAcesso Restrito
dc.titleSynergistic effect of growth conditions and organic carbon sources for improving biomass production and biodiesel quality by the microalga Choricystis minor var. minor
dc.typeArtigo

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