In this study,a method for the extraction of oil from Jatropha curcas seeds using sub critical fluid extrac-
tion was developed.Extraction conditions,optimized by response surface methodology,were as follows:
ethanol/hexane, 7:1mL/mL;solvent/solidratio,30mL/g;time,45min.The yield of the oil extracted from
the J. curcas seeds by this method was then compared to different extraction methods(reflux extrac-
tion, micro wave extraction,ultrasonic extraction and sub critical fluid extraction).The oil samples were
analyzed using gas chromatography–mass spectrometry(GC–MS)and Fourier transforminfraredspec-
trometer (FTIR).Results showed the maximal yield of Jatropha seed oil under the conditions tested of
sub critical fluid extraction reached 40.28goil/100gdry seed sata temperature of 90 ◦C, apres sure of
0.5 MPa.Based on the comparison between different extraction methods,the oil extracted by sub critical
fluid extractionhadagoodappearanceandahighyield.Inadditiontosubcriticalfluidextraction,the
extraction processes of mace rati on extraction,re flux extraction,and ultrasonic extraction were modeled
and discussed.Thesubcriticalfluidextractionmethodwasfoundtocompareadequatelytotheother
methods, and provided ago odamo unto fcor relating data.