Identification and Quantification of Aldose Reductase Inhibitory Flavonoids in Herbal Formulation and Extract of <i>Gymnema sylvestre</i> Using HPLC-PDA and LC-MS/MS

<table class="table-group" id="tab2"><tr><td><table class="table"><tr><td class="thead-hr" colspan="4"><hr/></td></tr><tr class="thead"><td align="left">Parameters</td><td align="center">Rutin</td><td align="center">Quercetin</td><td align="center">Kaempferol</td></tr><tr><td class="thead-hr" colspan="4"><hr/></td></tr><tr><td align="left">Precision (%RSD)</td><td align="center"> </td><td align="center"> </td><td align="center"> </td></tr><tr><td align="left"> System precision</td><td align="center">0.8</td><td align="center">0.77</td><td align="center">0.66</td></tr><tr><td align="left"> Method precision</td><td align="center">0.55</td><td align="center">0.55</td><td align="center">0.55</td></tr><tr><td align="left"> Accuracy (percentage recovery)</td><td align="center">99.07–104.3</td><td align="center">98.03–105.3</td><td align="center">101.03–104.3</td></tr><tr class="table-tr"><td colspan="4"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

Chromatography Research International

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Table 2: Identification and Quantification of Aldose Reductase Inhibitory Flavonoids in Herbal Formulation and Extract of <i>Gymnema sylvestre</i> Using HPLC-PDA and LC-MS/MS 

Table 2 | Identification and Quantification of Aldose Reductase Inhibitory Flavonoids in Herbal Formulation and Extract of Gymnema sylvestre Using HPLC-PDA and LC-MS/MS 