matrix. Furthermore, this is in accordance with the fact that a very
short constant extractionrateperiod was observedinthe extraction
curves (tCER values were 0.96, 0.16 and 0.30 min, respectively, for
EA, EL and ETOH) and thus, mass transport within the solid phase
dominated extraction rate almost from the beginning of the process.
In this respect, the solubility value (Y*) calculated as the slope
of a theoretical linear behavior up to 14 min of extraction should
be considered as an estimated value