Table 2.

Calibration data used for the ultra-high-pressure liquid chromatography coupled with ultraviolet detection (UHPLC-UV) quantification of phenolic compounds in S. nigra L. polar berry extract.

Compound	λ (nm)	Conc. Range (μg/mL)	Calibration Curve a	r2	LOD b	LOQ b
					(μg/mL)
Quercetin 3-glucoside	340	1.00 × 10−1—20.0	y = 137,729x + 112,942	0.994	1.92	6.39
Cyanidin 3-glucoside	520	1.00 × 10−1—20.0	y = 293,965x + 55,885	0.999	7.40 × 10−1	2.49

^a y: peak area; x: concentration in μg/mL; ^b LOD: limit of detection; LOQ: limit of quantification.