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. 2017 Jun 27;22(7):1076. doi: 10.3390/molecules22071076

Table 2.

ANOVA of the response surface quadratic model for the yields of CPT and BA during the UARSE process.

Source a DF CPT BA
Sum of Square Mean Square F Value p-Value b Sum of Squares Mean Square F Value p-Value b
Model 9 2.45 0.27 53.94 <0.0001 69.21 7.69 87.53 <0.0001
X1 1 6.80 × 10−2 6.80 × 10−2 13.38 0.0081 10.29 10.29 117.09 <0.0001
X2 1 5.50 × 10−2 5.50 × 10−2 10.82 0.0133 5.82 5.82 66.25 <0.0001
X3 1 0.47 0.47 92.63 <0.0001 22.23 22.23 253.02 <0.0001
X1X2 1 1.69 × 10−4 1.69 × 10−4 0.033 0.8600 1.50 × 10−2 1.50 × 10−2 0.17 0.6894
X1X3 1 2.97 × 10−3 2.97 × 10−3 0.59 0.4681 0.55 0.55 6.27 0.0407
X2X3 1 7.30 × 10−2 7.30 × 10−2 14.39 0.0068 1.60 × 10−2 1.60 × 10−2 0.19 0.6800
X12 1 1.15 1.15 226.92 <0.0001 15.38 15.38 175.07 <0.0001
X22 1 0.39 0.39 77.38 <0.0001 2.39 2.39 27.23 0.0012
X32 1 0.10 0.10 20.51 0.0027 9.76 9.76 111.14 <0.0001
Residual 7 3.50 × 10−2 5.05 × 10−3 0.62 8.80 × 10−2
Lack of Fit 3 2.70 × 10−2 8.89 × 10−3 4.11 0.1030 0.41 0.14 2.65 0.1847
R2 0.9858 0.9912

a X1 is the liquid–solid ratio (mL/g), X2 the extraction time (min), and X3 the microwave power (W). b p < 0.0001 is considered as significant.