Quantification of Seed Oil Content and Fatty Acid Profile of Jatropha cucas L. from Guizhou, China

Abstract

<p class="1Body">The methyl esters of fatty acids composition of the oil from <em>jatropha curcas</em> seeds were analyzed by gas chromatography-mass spectrometer GC-MS. Fourteen components were found to be representative with 99.52% of the total content of seed oils. The main constituents were unsaturated fatty acids (71.93%) and saturated fatty acids (27.59%). For the saturated fatty acids composition such as palmitic and stearic acid, the rate was 15.80% and 10.79%, respectively. Linoleic acid (39.58%) and oleic acid (30.41%) were obtained in highest concentration among the unsaturated fatty acids identified in the seeds oil of <em>Jatropha curcas</em> from Guizhou. This value also justifies the fluidity of the oil at room temperature. A high percentage of polyunsaturated fatty acids (39.58%) and a slightly lower rate of monounsaturated fatty acids (32.35%) were also observed. The seed oils profile of Guizhou <em>Jatropha curcas</em> presents the desirable fatty acid C14 to C18 and interesting features for the biodiesel production.</p>

Vortex-assisted Solid-Liquid Extraction for Rapid Screening of Oil Content in Jatropha Seed: an Alternative to the Modified Soxhlet Method

“…In the oils obtained from both methods, linoleic (18:2 Δ 9,12 ), oleic (18:1 Δ 9 ), palmitic (16:0) and stearic (18:0) acids were found to be the major components, whilst palmitoleic acid (16:1 Δ 9 ) and myristic acid (16:0) were detected in trace amounts. These findings are in line with the previous reports, 1,15,25 revealed that palmitic and stearic acids are the major saturated fatty acids, whilst oleic and linoleic acids are the most abundant unsaturated fatty acids in Jatropha oil.…”

“…For GC-MS analysis, the triacylglycerides were transesterified with methanol, according to Senou et al, 15 with modifications. Two drops of oil from the Soxhlet method were dissolved in 1200 µL of hexane in a 2 mL centrifuge microtube.…”

Oil Content and Fatty Acids Composition during Seeds Storage of Two Ecotypes of <i>Jatropha curcas </i>L<i>.</i> from Mali

“…[2] This oil is also used as a feedstock for biodiesel production [5,6]. For biodiesel introduction on a large scale, it is required to do some description of quality requirements in a standard manner, because the chemical structure of fatty acid methyl esters are older than fossil diesel fuels [7].…”