RESUMO:Sementes de três espécies de Cordia L., da família Boraginaceae, coletadas em diferentes cidades do Estado de São Paulo foram analisadas quanto ao teor de lipídeos e composição de ácidos graxos, com ênfase na presença do ácido gama-linolênico, um ácido graxo de grande interesse terapêutico. Os lipídeos totais foram fracionados em classes (lipídeos neutros, fosfolipídeos e glicolipídeos) através de cromatografia em coluna aberta de gel de sílica e a composição de ácidos graxos foi determinada por cromatografia a gás. As concentrações de lipídeos totais apresentaram grande variação entre as amostras (25,84 a 62,81 %), sendo que a classe lipídica dominante foi de lipídeos neutros (média de 88,9 % dos lipídeos totais). Os ácidos insaturados representaram 75 % da composição total dos ácidos graxos, sendo o principal representante o ácido oléico. Verificou-se a presença do ácido gama-linolênico em todas as amostras analisadas, em concentrações que variaram de 0,63 a 2,54 %, valores superiores àqueles relatados pela literatura para outras espécies do gênero Cordia L.Unitermos: Cordia; Boraginaceae; ácido gama-linolênico; óleo; sementes ABSTRACT: Lipids compounds study from seeds of three Cordia L. species (Boraginaceae). Seeds of three Cordia L. species (Boraginaceae), collected in different cities of the State of São Paulo were analysed in relation to the lipid content and fatty acid composition, with emphasis on the presence of gamma-linolenic acid, a fatty acid with therapeutical interest. The total lipids were separated into classes (neutral lipids, phospholipids and glucolipids) by open column chromatography with silica gel and the fatty acid composition was determined by gas chromatography. Although the levels of total lipids varied considerably between samples (25.84 to 62.81 %), the dominant class was that of neutral lipids (88.9 % of the total lipids). The insaturated acids represented 75 % of the total composition of fatty acids, with oleic acid being the main representative. The presence of gamma-linolenic acid was ascertained in all the samples analysed, in concentrations from 0.63 to 2.54 %, higher values than those related in literature for other Cordia.
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