Table 1.

Standard data used for the HPLC-UV quantification of phenolic compounds present in methanol/water/acetic acid (49.5:49.5:1) extracts of Salix spp. bark.

Standard Compound	λ (nm) A	Concentration Range (µg mL−1)	Linear Regression Equation B	r 2	LOD (µg mL−1)	LOQ (µg mL−1)
Catechin	280	0.10–30.29	y = 93621x + 17212	0.9998	0.52	1.74
m-Hydroxybenzoic acid	235	0.51–30.89	y = 245747x + 909936	0.9929	3.42	11.40
Naringenin	280	0.11–21.17	y = 398130x + 61541	0.9990	0.87	2.89
Piceol	280	0.30–18.23	y = 765733x + 59082	0.9992	0.68	2.25
Quercetin	370	0.10–19.21	y = 320421x − 99949	0.9989	0.85	2.83

^A Wavelength used in the quantitative analysis; ^B y = peak area, x = concentration in µg mL⁻¹. LOD, limit of detection; LOQ, limit of quantification.