Table 2.

The calibration curves, correlation coefficients (R²) of reference substance.

Reference substance	Calibration curves	R 2	Liner range (mg/mL)
Geniposidic acid	Y= 2 × 10–7X+ 0.0037	0.9998	0.014–0.453
Geniposide	Y= 7 × 10–8X+ 0.0007	0.9999	0.014–0.440
Pinoresinol diglucoside	Y= 2 × 10–7X – 0.0006	0.9998	0.014–0.447
Psoralenoside	Y= 3 × 10–8X+ 0.0001	0.9999	0.008–0.240
Isopsoralenoside	Y= 3 × 10–8X – 0.0006	0.9997	0.011–0.357
Genipin	Y= 5 × 10–8X+ 0.0003	0.9999	0.008–0.267
Pinoresinol	Y= 2 × 10–7X+ 0.0010	0.9999	0.008–0.240
Psoralen	Y= 1 × 10–8X – 0.0029	0.9997	0.012–0.378
Isopsoralen	Y= 1 × 10–8X+ 0.0003	0.9998	0.009–0.277
Isobavachin	Y= 6 × 10–8X – 0.0022	0.9995	0.009–0.280
neobavaisoflavone	Y= 2 × 10–8X – 0.0002	0.9999	0.007–0.220
Bavachin	Y= 4 × 10–8X+ 0.0002	0.9999	0.006–0.180
Bavachalcone	Y= 5 × 10–8X – 0.0002	0.9998	0.007–0.237
Isobavachalcone	Y= 6 × 10–8X – 0.0004	0.9998	0.006–0.193
Bavachinin	Y= 5 × 10–8X – 0.0003	0.9999	0.010–0.320
Corylifol A	Y= 9 × 10–8X – 0.0010	0.9999	0.003–0.096
4′-O-Methylbroussochalcone	Y= 6 × 10–8X+ 0.0001	0.9999	0.009–0.277
Bakuchiol	Y= 6 × 10–8X+ 0.0069	0.9999	0.069–2.217