Characteristics and Composition of Jatropha curcas Oils, Variety Congo

Abstract

Abstract: The oil from Jatropha curcas seeds variety "Congo-Brazzaville" was extracted using two oils extraction methods with petroleum ether (Soxlhet) and extraction with a mixture of chloroform:methanol (1:1) (Blye and Dyer). The oils were compared of Jatropha curcas other countries. The oil concentration ranged from 50% (Soxlhet) to 47% (Blye & Dyer). The minerals, viscosity, acidity, saponification value, iodine value, fatty acid methyl esters, unsaponifiable matter content, peroxide value, activation energy and differential scanning calorimetry were determined. Jatropha curcas seeds have ash content of 4.2% (with the presence of following minerals: Ca, Mg, K and Na). The oil was found to contain high levels of unsaturated fatty acids, especially oleic (up to 40.10%) and linoleic (up to 37.60%). Jatropha curcas oil can be classified in the oleiclinoleic acid group. The dominant saturated acids were palmitic (up to 15.63%) and stearic (up to 5.78%). Jatropha curcas seeds were also founded to contain high levels of crude protein (25%). The content of insaponifiables is 0.89 %. Taking into account these results, Jatropha curcas can be cultivated for the production of oil of technical interest (biocarburant, soap, painting, lubricants, insecticides, etc)