Lespedezae herba.....Fig

After treatment with the VP reagent, Lespedezae herba (5a. 6b) shows the phenolic compounds as red-brown zones (vis.). In addition to free catechin, epicatechin (R, -0,9), the dimeric procyanidins migrate into the upper R, range and trimeric procyanidins are found in the lower R, range. 

7 Equisetum telmateia 8,9 Equiseti herba (trade sample) 

B Equisetum palustre (3,4) is a common adulterant of E. arvense but is easily distinguishable by its alkaloid content. Four to seven zones respond to IP reagent, a major zone (palustrine) directly below the brucine test and very weak zones in the R, range of the alkaloid test mixture T4. 

Equisetum arvense (1,2) the same flavonoid glycoside pattern as shown in Fig. 17A, but with a better separation in the Rj range of isoquercitrin, indicating the presence of an additional flavonoid glycoside (luteolin-7-O-glucoside ). 

Equisetum palustre (3,4) six green zones of kaempferol glycosides in the R, range 0,05-0.5, such as k-3-diglucosyl-7-glucoside, k-3-rutinosyl-7-glucoside and k-3, 7, diglucoside. 

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