The experimental data (Table 2) for the responses were fitted into Eq. (2) to estimate the function, f, in Eq. (1). Five response surface models were obtained for the moisture content, solubility, dispersibility, vitamin C content and overall color difference value. Table 3 shows the ANOVA data for response variables and their significance at 95 % confidence level along with correlation coefficients. A high correlation coefficient (R>0.7478) explained the goodness of fit of the experimental data in the response surface models of moisture content, solubility, dispersibility, vitamin C content and overall color difference value. This function showed that over 74.78 % of the total variation was accounted for or all the five response surface models fitted the data well and were adequately explained. The regression coefficients obtained for the second order polynomials(SOP)of the five responses are shown in Table 4