Chromatography Research International

Research Article

CZE/PAD and HPLC-UV/PAD Profile of Flavonoids from Maytenus aquifolium and Maytenus ilicifolia “espinheira santa” Leaves Extracts

Table 2

Resolution (Rs) between the peaks corresponding to the quercetin and kaempferol derivatives found in Maytenus aquifolium extracts (resp., peaks 1 and 2 at Figure 1), at pH 8.5 and with variation of buffer tetraborate/phosphate concentration.
Concentration of tetraborate/phosphate (mmol/L)Rs1,2
 10/5Coelution
 30/55.506
 50/56.320
 30/255.941
 30/506.311
, where is the difference on the electrophoretic mobility of the two analytes; is the mean of mobility of compounds corresponding to peaks 1 and 2; is the mobility of the eletroosmotic flow (neutral marker: methanol).