The Activity of Lipase From Jatropha Seed (Jatropha Curcas L.) And Its Application On Hydrolysis of Castor Oil In Organic Solvent

Jatropha curcas L. is one of the seed plants that have lipase activity and can work well in hydrolysis reactions chemical synthesis. This study aims to determine reacts with castor oil organic solvents. In this research, solvents, especially hydrophobic were used reaction increase lipase's catalytic activity. The solvent has a hydrophobicity level between 2 4, namely hexane. research stages consisted isolation, assay, effect adding metal ions analysis compound oil. results showed jatropha seeds had crude 0.603 U/mL increased 0.911 after addition K+. result transesterification by ricinoleic acid (4,58%) methyl (11,67%), concentration (17.09%) (60.83%) esterification produces alkyl ester compounds such as palmitate, ethyl pentadecanoate, linoleate, oleate, stearate. isolated from not only catalyzes but also synthesis transesterification.