extremely significantp < 0.0001
Besides, the interaction effects of extraction temperature and ratio of water to raw material (X 1 × X 3 ) were also extremely significant ( p < 0.0001).
Besides, the interaction effects of extraction temperature and ratio of water to raw material (X 1 × X 3 ) were also extremely significant ( p < 0.0001).
The ANOVA of the quadratic regression model demonstrated that the model was highly significant with a very low p -value ( p < 0.0001) through F -test.