Table 3 Polynomial equation caculated by RSM for spray dring of soft persimmon and milk mixture

Responses The second order polynomial1) R2
Yield (g) Y1=-8.2-0.205X1+1.275X2-0.804X3+0.00122X1X1 0.01046X2X2 0.0146X3X3-0.00234X1X2+0.00283X1X3+0.00258 X2X3 0.91
Total phenolic compounds (μg/mL) Y3=1174-18.61X1+1.69X2+4.53X3+0.0848X1X1-0.0336X2X2+0.080X3X3 0.0188X1X2- 0.0337X1X3 - 0.0282X2X3 0.73
Y=b0+b1X1+b2X2+b3X3+b11X12+b21X2X1+b22X22+b31X3X1+b32X3X2+b33X32.