Table 1.

The linearity data of 11 compounds in tannins

Compounds	Linear Equation	r2	Linear range (mg/mL)	LOQ (μg/mL)	LOD (μg/mL)
Castalin	Y = 6.020 × 106X − 4.970 × 104	0.9997	0.0102–0.0612	10.20	3.26
Gallic acid	Y = 1.689 × 107X − 2.634 × 104	0.9999	0.0018–0.0804	1.81	0.63
Vescalagin	Y = 1.685 × 107X − 1.599 × 105	0.9990	0.0098–0.1225	9.80	3.43
Castalagin	Y = 8.164 × 106X − 1.357 × 104	0.9996	0.0080–0.1325	7.95	3.64
Procyanidin B1	Y = 5.122 × 106X − 1.922 × 104	0.9997	0.0048–0.1800	4.80	2.00
Catechin	Y = 4.881 × 106X − 9.436 × 103	0.9995	0.0040–0.2020	4.04	1.21
Procyanidin B2	Y = 5.086 × 106X − 1.396 × 104	0.9994	0.0048–0.2400	4.80	1.5
Epicatechin	Y = 6.657 × 106X − 3.419 × 104	0.9998	0.0064–0.1030	6.43	2.19
Procyanidin dimers B2-3′-O-gallatewere	Y = 5.780 × 106X − 9.046 × 102	0.9995	0.0015–0.1080	1.51	0.65
Procyanidin C1	Y = 2.5129 × 106X − 8.342 × 103	0.9996	0.0080–0.0960	8.00	2.50
Ellagic acid	Y = 1.377 × 107X − 5.539 × 103	0.9995	0.0020–0.0406	2.03	0.81