Table 1.

UHPLC data for the calibration curves, LODs, LOQs, and repeatability (n = 6).

Compounds	Regressive equation	Linear range (μg/mL)	R 2	LOD (μg/mL)	LOQ (μg/mL)	Repeatability RSD (%)
Gallic acid	Y = 5719x + 446.94	0.46~100	0.9997	0.15	0.46	2.14
Catechin	Y = 507.37x + 341.84	5.56~100	0.9994	1.85	5.56	1.59
Epicatechin	Y = 625.05x + 370.25	2.78~100	0.9977	0.93	2.78	3.97
Polydatin	Y = 1279.9x − 13.406	1.67~100	0.9975	0.56	1.67	2.35
2,3,5,4′-Tetrahydroxystilbene-2-O-β-D-glucoside	Y = 1271.8x + 1703.5	2.29~1000	0.9998	0.71	2.29	1.10
resveratrol	Y = 3466.9x − 263.63	0.56~100	0.9999	0.19	0.56	1.90
Emodin-8-O-glucoside	Y = 1518.4x + 174.91	1.11~100	0.9998	0.37	1.11	1.31
Physcion-8-O-glucoside	Y = 3563x + 1665.9	0.33~100	0.9955	0.11	0.33	1.69
Rhein	Y = 7705x − 1401	0.22~100	0.9996	0.07	0.22	1.70
Emodin	Y = 11056x − 743.8	0.19~100	0.9998	0.06	0.19	0.77
Physcion	Y = 2238.3x − 601.47	0.93~100	0.9996	0.31	0.93	1.92