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Table 1 Calibration curves of the quantified reference standard compounds

From: Bio-guided bioactive profiling and HPLC-DAD fingerprinting of Ukrainian saffron (Crocus sativus stigmas): moving from correlation toward causation

Compound

Calibration curveа

Correlation coefficient r2 (n = 6)

Linear range (μg/mL)

RSD, %

LODb (ng/mL)

LOQc (ng/mL)

1

Caffeic acid

y = 57,646.8x-3853.48

0.9999218

0.72–91.92

1.56

20

60

2

Ferulic acid

y = 54,955.4x - 638.345

0.9999592

0.44–56.5

1.60

30

80

3

Rutin

y = 16,072.5x + 1499.73

0.9998787

0.16–20.24

1.07

96

290

4

Crocin

y = 3789.03x + 220.836

0.999588

1.15–147.2

1.28

100

300

5

Apigenin

y = 50,138.3x + 5722.97

0.9998899

0.2–25.76

0.53

25

80

6

Safranal

y = 39,230.1x-11,887.2

0.999529

1.33–42.56

1.35

120

360

7

Gallic acid

y = 32,880.6x-612.983

0.9999718

0.48–61.08

1.31

30

100

8

Chlorogenic acid

y = 29,930.2x-538.361

0.9999502

0.36–46

1.29

20

70

  1. Note: aconcentration of compound (mg/mL); y, peak area; bLOD, limit of detection (S/N = 3); cLOQ, limit of quantification (S/N = 10)