highly significantp < 0.0001
The second-order polynomial equation derived from the experimental data was: Y = 38.16 + 0.6625 A – 0.3875B - 0.5250C + 0.2000AB - 0.3750 AC + 0.6250 BCE - 3.73A 2 –1.33B 2 –1.50C 2 The ANOVA results ( Table 4 ) demonstrated that the regression model was highly significant ( p < 0.0001) with an F-value of 60.87.