Table 2 Calibration curves, LODs, and LOQs for the four flavonoids (1–4)

1

y = 20.981x-29.365

0.9997

<0.001

0.98 — 500.00

0.49

1.64

2

y = 32.967x + 16.675

0.9995

<0.001

1.26 — 80.60

0.73

2.42

3

y = 22.738x + 6.6695

0.9994

<0.001

0.20 — 100.00

1.32

4.39

4

y = 33.411x + 10.376

0.9992

<0.001

0.20 — 100.00

1.20

3.99