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Faculty of Technology, University of Nis , Niš , Serbia
Faculty of Technology, University of Nis , Niš , Serbia
Faculty of Technology, University of Nis , Niš , Serbia
Faculty of Technology, University of Nis , Niš , Serbia
Garlic pennycress (Thlaspi alliaceum L.) is weedy, annual plant that grows in Europe, Asia, and North America. It can be cultivated on marginal land with no or minimal agricultural requirements. Garlic pennycress seeds are rich in oil, which can be a valuable feedstock for industrial application. This study investigates the oil recovery from garlic pennycress seed by maceration using n-hexane. The aim of the paper is statistical analysis and modeling the oil yield obtained under various extraction conditions: temperature (20-70 oC), solvent:seed ratio (3-10 mL/g), and time (5-15 min) according to the 33 full factorial design. According to the analysis of variance, a statistically significant effect (p<0.05) on the garlic pennycress seed oil yield had all individual process factors, the interaction between temperature and time, and the quadratic term of the temperature. Other interaction and quadratic terms did not show statistically significant effects. The influence of the maceration conditions decreased in the following order: maceration temperature>solvent:seed ratio>maceration time. The oil yield was modeled as a function of the maceration temperature, solvent:seed ratio and maceration time using a quadratic model. The reliability of the model was confirmed by good agreement between experimental and calculated values of oil yield (MRPD=±1.62%, 27 data).
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