Comparison of Phenolic Compound Separations by HPTLC and PPEC with SDS as the Mobile Phase Component

Table 1

Structural formulas and physicochemical properties of investigated compounds.

Flavonoids
Name	Lipophilicity	Formula
Apigenin-7-glucoside	Log P = −0.39 [45]
	Kw/c = 10.13 [46]
Diosmin	Log P = 2.05 [45]
Flavanone	Log P = 3.62 [45]
	Kw/c = 0.16 [46]
2-Hydroxyflavanone	Log P = 3.10 [45]
Hesperidin	Log P = 1.78 [45]
Hesperetin	Log P = 2.90 [45]
	Kw/c = 0.02 [46]
Naringenin	Log P = 3.19 [46]
	Kw/c = 0.55 [46]
Rutin	Log P = 1.76 [45]
	Kw/c = 113.47 [46]

Phenolic acids
Acid name	pKA1	pKA2	Log P	Formula
p-Hydroxybenzoic	4.25 [47]	9.1	1.42
Protocatechuic	4.54 [47]	8.53	1.16
Vanillic	4.04 [47]	9.08	1.33
Syringic	4.46 [48]	9.33 [48]	1.13
trans-Cinnamic	5.5 [45]	—	2.41
o-Coumaric	4.52 [49]	—	1.88
Caffeic	4.48 [48]	8.83	1.42
Ferulic	4.38 [48]	8.75	1.64