Conclusion
In this work the supercritical fluid extraction of olive leaves
and bark using carbon dioxide at 40 and 60 C, and 90, 250
and 300 bars has been accomplished. The effect of the operating
conditions upon the yields of triterpenes and aliphatic
hydrocarbons were analyzed. The maximum extraction yield
of several hydrocarbons was obtained in this study at a high
pressure of 300 bars, whereas the extraction yield of many triterpenes
such as squalene increased significantly at moderate
pressure of 90 bars. The optimization of solubility values of
many solutes in supercritical carbon dioxide showed the accuracy
of the implemented numerical model and allowed the
interpolation at other pressures and temperatures. It was
shown that treated leaf and bark with supercritical carbon
dioxide extractions can produce different extracts with high
VAT. Future works will focus on developing methods able
to fractionate the desired compounds from these vegetable
matrices.