XVI International Botanical Congess

Morphometrical analysis and oils extraction with n-hexand of 104 seed samples, including 33 species, were done. Methyl esters of fatty acids were determined by gas chromatography coupled with electron impact-mass spectrometry. The oil contents varied from 2.2% to 37.8%. In nine species, oil contents were above 30%. The most species presents fatty acids with predominance of unsaturated compounds. The seeds oil of Chamaesyce opthalmica, Ditaxis malpighiaceae, Euphorbia heterophylla and Sebastiania corniculata are appropriate as raw material for the paint and varnish industry, those of Cnidoscolus quercifolius, Manijot dichotoma and M. epruinosa, to the food industry, and of Jatropha ribifolia, for the soap and detergent industry.