lower pressure and that SFE-CO2 was more effective than
compressed propane. Fig. 1 shows the kinetic curves of the
extraction process of P. diospyrifolium leaves using SFE-CO2;
clearly, an increase in pressure improved the extraction rates.
These results are in agreement with other studies (Moura et al.,
2009; Prado et al., 2011; Lemos et al., 2012).