The values of the coefficients of determination (R 2 ) and adjusted R 2 were 96.2% and 94.77% respectively. This high value of the coefficient of determination suggests that the proposed model is suitable for estimating the value of the product's conversion yield. Another significant factor observed in the ANOVA is the F value for Lack of Fit (2.833) concerning Pure Error. This value was not significant, so the model was adequate for predicting the response.