Table 2 ANOVA analysis of RSM.

From: Maximizing the extraction yield of plant gum exudate using response surface methodology and artificial neural networking and pharmacological characterization

Source

Sum of squares

df*

Mean square

Model

87.24

14

6.23

X1-temperature

1.49

1

1.49

X2-pH

1.10

1

1.10

X3-extraction time

0.1766

1

0.1766

X4-PAG/water ratio

0.0852

1

0.0852

X1 X2

0.2589

1

0.2589

X1 X3

0.0128

1

0.0128

X1 X4

2.59

1

2.59

X2X3

0.0225

1

0.0225

X2X4

0.6058

1

0.6058

X3 X4

0.1479

1

0.1479

X12

17.14

1

17.14

X22

32.10

1

32.10

X32

0.0088

1

0.0088

X42

7.44

1

7.44

Residual

13.91

14

0.9935

  1. *Degree of freedom.
  2. p-value = 0.0007, Mean = 27.66, R2 = 0.86, C.V% = 3.60
  3. Adeq precision = 8.94.
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