Good adjustments of eq. (2.1) to the experimental data were verified through the determination coefficients obtained (R2 > 0.85 for the majority of the analyzed responses, except for k1 where R2 was 0.50),
representing the proportion of variation in the response explained by the terms in the model.
The results demonstrate the significant effect (p < 0.05) of initial moisture content and particle size on essential oil yield.