Table 2.

Stability studies of L18 (5³) orthogonal experimental design.

	Tu	ER	LJH	CS	FAA	Inhibition rate
1	0 g	0 g	0 g	0 g	0 g	0.0%
2	0 g	1 g	1 g	1 g	1 g	36.0%
3	0 g	3 g	3 g	3 g	3 g	99.5%
4	1 g	0 g	0 g	1 g	1 g	45.0%
5	1 g	1 g	1 g	3 g	3 g	87.0%
6	1 g	3 g	3 g	0 g	0 g	44.0%
7	3 g	0 g	1 g	0 g	3 g	26.0%
8	3 g	1 g	3 g	1 g	0 g	32.0%
9	3 g	3 g	0 g	3 g	1 g	95.9%
10	0 g	0 g	3 g	3 g	1 g	84.6%
11	0 g	1 g	0 g	0 g	3 g	43.4%
12	0 g	3 g	1 g	1 g	0 g	55.0%
13	1 g	0 g	1 g	3 g	0 g	80.1%
14	1 g	1 g	3 g	0 g	1 g	37.0%
15	1 g	3 g	0 g	1 g	3 g	85.0%
16	3 g	0 g	3 g	1 g	3 g	61.7%
17	3 g	1 g	0 g	3 g	0 g	83.1%
18	3 g	3 g	1 g	0 g	1 g	44.9%
P	0.333	0.024	0.713	<0.001	0.062

P: significance of the difference between the three levels (low dose, high dose, and control group) of each factor.

Tu: Tumeric; ER: Evodiarutaecarpa; LJH: Leonurusjaponicus Houtt; CS: Caesalpinia sappan; FAA: Folium Artemisia Argyi.