Table 7.

Calibration curves, correlation coefficients, linear ranges and LLOQ of 8 compounds.

Compounds	Calibration curve	r	Linear range (ng/mL)	LLOQ (ng/mL)
Oleuropein	y = 0.094x–0.021	0.9934	0.25–100	0.2
Chlorogenic acid	y = 0.064x–0.057	0.9906	0.5–200	0.3
Formononetin	y = 0.709x–0.180	0.9988	0.5–200	0.3
Verbascoside	y = 0.086x–0.092	0.9987	1–400	1.0
Linarin	y = 0.177x–0.058	0.9990	0.5–200	0.2
Luteolin	y = 1.031x–0.334	0.9971	0.5–200	0.2
Jaspolyside	y = 0.044x–0.024	0.9915	0.5–200	0.2
Specnuezhenide	y = 0.079x–0.038	0.9932	0.5–200	0.2