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Table 3 Calibration curves of constituents

From: Inhibitory effect of Isatis tinctoria L. water extract on DNCB-induced atopic dermatitis in BALB/c mice and HaCaT cells

Compound Range.(ug/mL,ppm) Regression equation r2 LOD(μg/ml) LOQ(μg/ml)
1 10.0 ~ 100.0 y = 1.2153x + 0.4749 0.9997 0.0091 0.0276
2 20.0 ~ 200.0 y = 0.3532x + 0.1549 1.0000 0.0313 0.0950
  1. Epigoitrin (1); Adenosine (2)
  2. LOD = 3.3 × σ/ S. LOQ = 10 × σ / S. σis the standard deviation of the intercept from the regression equation and S is the slope of the calibration curve