summarizes the various factor effects and their associated p-values. It can be observed that the response Y1 was influenced significantly by the synergistic linear contribution of X2 and the quadratic contribution of X1 while the linear contribution of X1 and quadratic contribution of X2 exerted the antagonistic response. The response Y2 (% encapsulation) was influenced significantly by the synergistic linear contributions of X2 and quadratic contributions of X1, while the linear contribution of X1, quadratic contribution of X2 and the interaction effects of X1 and X2 affected the response antagonistically.