Table 1.

K values of target compounds in different solvent systems.

Solvent Systems	Ratio (v/v)	K
		1	2	3	4	5
ethyl acetate/n-butanol/water	2:1:3	0.092	0.102	0.210	0.320	0.535
ethyl acetate/n-butanol/water	4:1:5	0.154	0.161	0.287	0.351	0.710
ethyl acetate/n-butanol/water	11:1:12	0.122	0.123	0.225	0.397	0.641
ethyl acetate/n-butanol/methanol/water	11:0.5:0.5:11	0.111	0.368	0.491	0.641	0.697
ethyl acetate/n-butanol/methanol/water	11:0.5:1:11	0.173	0.419	0.536	0.875	1.355
ethyl acetate/n-butanol/methanol/water	11:3:0.5:11	0.677	0.859	1.085	1.910	3.352
ethyl acetate/n-butanol/methanol/water	5:1:1:5	0.510	0.719	1.090	1.581	2.210