. 2021 Apr 6;10(4):702. doi: 10.3390/plants10040702

Table 1.

Linear range, regression equation, correlation coefficients, limits of detection (LODs), and limits of quantification (LOQs) for compounds.

Compound	Linear Range (μg/mL)	Regression Equation (y = ax + b) ^a)		r ²	LOD ^b) (μg/mL)	LOQ ^c) (μg/mL)
Compound	Linear Range (μg/mL)	Slope (a)	Intercept (b)	r ²	LOD ^b) (μg/mL)	LOQ ^c) (μg/mL)
Gallic acid	6.25–200	25,130	1562.7	1.0000	0.726	2.199
(+)-catechin	12.5–400	8599.9	−4988.9	1.0000	0.381	1.154
Ellagic acid	3.125–100	104,400	−22,602	1.0000	0.315	0.954
Quercitrin	3.125–100	25,051	−4781.8	1.0000	0.172	0.520

^a) y = ax + b, y means peak area and x means concentration (μg/mL); ^b) LOD (Limit of detection): 3.3 × (SD of the response/slope of the calibration curve); ^c) LOQ (Limit of quantitation): 10 × (SD of the response/slope of the calibration curve).