Table 3.

Regression coefficients of predicted polynomial models for the investigated responses from L. chuanxiong extracts.

Coefficient	Constituents
	Ferulic acid	Senkyunolide I	Senkyunolide H	Senkyunolide A	Ligustilide	Levistolide A
A0	0.245 ***	0.089 ***	0.253 ***	0.658 ***	2.669 ***	0.040 ***
A1	0.022 ***	0.011 ***	0.021 **	0.032 **	0.154 **	0.002 **
A2	0.013 *	0.007 ***	0.016 **	0.038 **	0.212 **	0.002 **
A3	0.014 **	0.003 *	0.012 *	0.042 **	0.103 **	0.002 *
A11	−0.003	−0.006 **	−0.014 *	−0.027 **	−0.091 *	−0.0004
A22	−0.006	−0.003	−0.005	0.009	−0.071 *	−0.001
A33	−0.006	−0.002	0.002	0.001	0.003	−0.0003
A12	−0.012 *	−0.008 **	−0.015 *	−0.025 *	−0.107 *	−0.003 *
A13	−0.014 *	−0.0003	−0.015 *	−0.025 *	−0.114 *	−0.003 *
A23	−0.013 *	−0.001	−0.014 *	−0.033 *	−0.071 *	−0.003 *
Model	**	***	**	**	**	**
Lack of fit	ns	ns	ns	ns	ns	ns
R2	0.880	0.933	0.867	0.903	0.898	0.851
R2adj	0.772	0.873	0.748	0.816	0.806	0.716

ns, Not significant at p ≤ 0.05; * Significant at p ≤ 0.05; ** Significant at p ≤ 0.01; *** Significant at p ≤ 0.0001.