Table 2.

Calibration curves, correlation coefficients, linear ranges, and LLOQ of the analytes.

Compound	Calibration curves	Correlation coefficients (r)	Linear range (ng/mL)	LLOQ (ng/mL)
Quercitrin	Y = 0.6491X + 0.0086	0.9925	1–250	1
Quercetin	Y = 0.5980X + 0.0026	0.9967	1–250	1
Hyperoside	Y = 0.8758X + 0.0098	0.9961	1–250	1
Caffeic acid	Y = 0.8239X + 0.0030	0.9986	1–250	1
Rutin	Y = 0.2459X + 0.0138	0.9920	2–500	2
Chlorogenic acid	Y = 0.1467X + 0.0038	0.9914	1–250	1
Luteolin	Y = 0.6678X + 0.0025	0.9936	1–250	1
Apigenin	Y = 0.7207X + 0.0017	0.9929	1–250	1
Kaempferol	Y = 0.0250X − 0.0001	0.9952	1–250	1
Isoquercitrin	Y = 0.8758X + 0.0098	0.9960	1–250	1
Cryptochlorogenic acid	Y = 0.1038X + 0.0003	0.9903	1–250	1
Isorhamnetin-3-O-glucoside	Y = 0.5362X + 0.0036	0.9942	1–250	1
Astragalin	Y = 0.6307X + 0.0052	0.9962	1–250	1