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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)