Table 1. Results for linearity, LOD and LOQ of seven marker compounds.

Compounda	Calibration curveb	R2	LOD(μg·mL-1)	LOQ(μg·mL-1)	Linear range(μg·mL-1)
UR(265nm)	y = 33.41x+16.38	0.9998	0.15	0.58	0.63–6.30
AD(260nm)	y = 11.41x+15.28	0.9998	0.37	1.63	1.92–19.2
CGA(330nm)	y = 21.28x+59.83	0.9997	0.15	0.58	1.20–24.0
CFA(330nm)	y = 30.76x+78.35	0.9997	0.10	0.41	1.80–36.0
CCA(335nm)	y = 29.94x+123.6	0.9997	0.11	0.60	6.60–132
LGR(350nm)	y = 18.78x+30.65	0.9998	0.26	0.98	14.3–360
LG(350nm)	y = 20.95x+88.50	0.9996	0.20	0.90	3.00–30.0

^aUR, Uridine; AD, Adenosine; CGA, Chlorogenic acid; CFA, Caffeic acid; CCA, Cichoric acid; LGR, Luteolin-7-β-D-glucuronide; LG, Luteolin-7-glucoside.

^by is the peak area, x is the concentration injected (μg·mL^-1).