Enzymatic Extraction, Purification, and Characterization of Polysaccharides from Penthorum chinense Pursh: Natural Antioxidant and Anti-Inflammatory

Table 5

Results of ANOVA and regression analysis of a full second-order polynomial model for optimization of the yield of PCPP.

Source	Sum of Squares	Mean Square	F Value	p-value	significant
Model	49.36	9.87	350.66	< 0.0001
X5	30.02	30.02	1066.32	< 0.0001
X3	3.34	3.34	118.52	< 0.0001
X3 X5	0.38	0.38	13.57	0.0078
	12.33	12.33	437.99	< 0.0001
	5.09	5.09	180.87	< 0.0001
Residual	0.20	0.028
Lack of Fit	0.077	0.026	0.86	0.5305	◆
Pure Error	0.12	0.030
Cor Total	49.56
R-Squared	0.9960
Adj R-Squared	0.9932
Pred R-Squared	0.9851
Adeq Precision	53.58

, , and represent p<0.05, p<0.01, and p<0.0001, respectively.
◆ represents “not significant”.