Optimized Extraction Method for Kleeb Bua Daeng Formula with the Aid of the Experimental Design

Table 2

The results from response surface model of percentage extraction yield, TPC, TFC, TCC, and TAC by analysis of variance (ANOVA).

Response	Model	F-value	value	R^2	Adjusted R^2
Percentage extraction yield	Quadratic	92.87	<0.0001	0.9917	0.9810
Total phenolic content	Quadratic	30.14	<0.0001	0.9748	0.9425
Total flavonoid content	Quadratic	20.18	0.0003	0.9629	0.9152
Total carotenoid content	Quadratic	6.22	0.0124	0.8889	0.7460
Total anthocyanin content	Quadratic	144.87	<0.0001	0.9947	0.9878

Level of significance: significant at .