EL-Hefny, Mervat  <br/><br/>
GC-MS and HPLC analyses of phytochemical compounds from Withania Somnifera L. leaves extract  [electronic resource] 
 التحليل الكروماتوجافى الغازي المتصل بالمطياف الكتلى والتحليل الكروماتوجرافى السائل عالي الكفائة لتحليل المركبات الكيميائية من مستخلص أوراق نبات ال  Withania Somnifera L. 

 - p. 11-17. 
<br/><br/>Includes bibliographic reference 
<br/><br/> In the present work, the shrub W. somnifera was used as a source for the extraction of <br/>bioactive molecules.  Leaves were extracted by ethanol and analyzed by Gas Chromatography<br/>-Mass Spectrometry (GC-MS) and  High-Performance Liquid Chromatography (HPLC). By GC-MS <br/>analysis, the highest identified compounds  were 2,6-dimethyl-N-(2-methyl-?-phenylbenzyl)<br/>aniline, 4-Aminoheptane, n-undecanophenone,  2-cyclohexyl-4-hydroxymethyl-octahydrobenzo<br/>[e][1,2] oxazine-3-carbonitrile,  and octadecanoic acid 3-octadecyloxypropyl ester, <br/>with percentages of 19.43%, 7.51%, 4.47%,  4.34%, and 3.89%, respectively. HPLC analysis <br/>identified quercetin and 7-hydroxyflavone with  concentrations of 12.36 and 15.14 mg/mL, <br/>respectively, as two flavonoid compounds.  This work showed that W. somnifera leaf extract <br/>owns several bioactive compounds that  could be useful and have different applications, <br/>such as antimicrobial activities.<br/>Key words: Withania somnifera leaves; HPLC; GC-MS; quercetin; 7-hydroxyflavone.<br/> 
<br/><br/><br/>Summary in Arabic 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Withania somnifera	--Analysis