Comparative study of lipids in mature seeds of six cordia species (family Boraginaceae) collected in different regions of Brazil - Carvalho, Patrícia de O; Arrebola, Melissa B; Sawaya, Alexandra C. H. F; Cunha, Ildenize B. S; Bastos, Deborah Helena Markowicz; Eberlin, Marcos Nogueira (Lipdis, 2006)