Marker

Concentration

(ng/ spot)

Intra-day precision*

Inter-day precision*

Bergenin

400

3.12

3.15

480

2.62

1.90

560

4.26

4.27

(+)-Catechin

400

1.04

0.85

480

2.5

3.05

560

0.35

2.43

Gallicin

320

1.83

0.97

480

1.20

1.25

640

0.61

1.45

Gallic acid

320

1.56

0.64

480

1.57

1.27

640

1.14

0.58

β-Sitosterol

80

0.15

0.26

160

0.52

0.43

240

0.46

0.61
Table 3: Intra-day and Inter-day precision of Bergenin, (+)-Catechin, Gallicin, Gallic acid, and ß-Sitosterol.