Table 1 The main flavonoid contents in L. coreana var. sinensis from different regions (mg/g)

Kaempferol-3-O-β-D-glucoside

2.36 ± 0.26^d

8.79 ± 0.75^bc

10.23 ± 1.07^ab

6.40 ± 0.86^c

11.95 ± 1.34^a

Kaempferol-3-O-β-D-galactoside

0.18 ± 0.01^c

0.48 ± 0.04^ab

0.52 ± 0.05^ab

0.37 ± 0.04^b

0.54 ± 0.06^a

Quercetin-3-O-β-D-glucoside

0.70 ± 0.09^c

2.41 ± 0.19^ab

3.19 ± 0.35^a

1.92 ± 0.23^b

2.91 ± 0.46^a

Quercetin-3-O-β-D-galactoside

0.21 ± 0.02^c

0.61 ± 0.06^b

0.86 ± 0.09^a

0.54 ± 0.07^b

0.64 ± 0.10^b

Total

3.45

11.68

14.8

9.23

16.04