Avaliação de microalgas verdes isoladas nas costas central e norte de São Paulo como fonte de óleos
DOI:
https://doi.org/10.20873/jbb.uft.cemaf.v9n1.matsudoPalavras-chave:
microalgas, biomassa, single-cell-oil, ácidos graxos, lipídiosResumo
Microalgas de água doce, isoladas em áreas de mangue nas costas central e norte do estado de São Paulo (Brasil), foram avaliadas considerando conteúdo de lipídios, perfil de ácidos graxos e conteúdo de proteí-nas. Essa composição bioquímica foi comparada com cepas obtidas da Coleção de Culturas da UTEX (EUA). Entre as sete algas verdes identificadas, Monoraphidium contortum (CCMA-UFSCar-701) apre-sentou o maior conteúdo lipídio (43,60%), valor próximo ao observado em Botryococcus braunii (UTEX-2441, 48,85%). O conteúdo de proteínas nos isolados variou entre 13,90 e 23,60%. Os ácidos graxos mais abundantes foram ácido palmítico (C16:0), ácido oleico (C18:1), ácido linoleico (C18:2) e ácido y-linolénico (C18:3).Chlorella vulgaris (CCMA-UFSCar-704) destacou-se por seu alto conteúdo de ácido linoleico (49%), enquanto Elakatothrix sp (CCMA-UFSCar-702) e Scenedesmus obliquus (UTEX-B2630) apresentaram o maior conteúdo de ácido oleico (41% e 43%, respectivamente), sendo que este ácido se destaca como matéria prima para produção de biodiesel.
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