In condition (A), the extraction yield at a ratio equal or higher than (3:1) (solvent to soybean mass) resulted in greater yields when compared to the conventional Soxhlet process (23.88%). This indicates that the extraction with solvent A(90% anhydrous ethanol and 10% biodiesel) presented lower selectivity than petroleum ether, in other words, it permits the extraction of other components from the matrix than not the oil (nonpolar acyl glycerols). By means of the extraction kinetics, as follows, it is possible to check whether this reduced selectivity is an effect of the biodiesel usage as co-solvent
or of ethanol itself.