Isolation of antibacterial compounds from <it>Quercus dilatata</it> L. through bioassay guided fractionation
<p>Abstract</p> <p>Background</p> <p>Four medicinal plants (<it>Chrozophora hierosolymitana</it> Spreng<it>, Chrysanthemum leucanthemum</it> L., <it>Ephedra gerardiana</it> Wall. ex Stapf<it>,</it> and <it>Quercus di...
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| Format: | Article |
| Language: | English |
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BMC
2012-05-01
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| Series: | Annals of Clinical Microbiology and Antimicrobials |
| Subjects: | |
| Online Access: | http://www.ann-clinmicrob.com/content/11/1/11 |
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| author | Jamil Maryam ul Haq Ihsan Mirza Bushra Qayyum Mazhar |
| author_facet | Jamil Maryam ul Haq Ihsan Mirza Bushra Qayyum Mazhar |
| author_sort | Jamil Maryam |
| collection | DOAJ |
| description | <p>Abstract</p> <p>Background</p> <p>Four medicinal plants (<it>Chrozophora hierosolymitana</it> Spreng<it>, Chrysanthemum leucanthemum</it> L., <it>Ephedra gerardiana</it> Wall. ex Stapf<it>,</it> and <it>Quercus dilatata</it> L.) used by indigenous healers to treat various infectious diseases were selected for the present study. The major objective of the present study was isolation and characterization of antimicrobial components from the crude plant extracts using bioassay guided fractionation.</p> <p>Methods</p> <p>Seven methanolic extracts of the four plants were screened to identify any antimicrobial agents present in them. The active crude plant extract was fractionated first by solvent partitioning and then by HPLC. Characterization of the active fractions was done by using spectrophotometer.</p> <p>Results</p> <p>All the seven methanolic extracts showed low antifungal activity, however, when these extracts were tested for antibacterial activity, significant activity was exhibited by two extracts. The extract of aerial parts of <it>Q. dilatata</it> was most active and therefore, was selected for further analysis. Initially fractionation was done by solvent-solvent partitioning and out of six partitioned fractions, ethanol fraction was selected on the basis of results of antibacterial activity and phytochemical analysis. Further, fractionation was carried out by RP- HPLC and purified active subfractions were characterized by comparing their absorption spectra with that of the known natural products isolated from the plants of Quercus genus.</p> <p>Discussion and conclusion</p> <p>The results suggest that this is the first report of the isolated antibacterial compounds from this genus.</p> |
| first_indexed | 2024-04-12T18:55:30Z |
| format | Article |
| id | doaj.art-24be84318c99456881331260e4c31490 |
| institution | Directory Open Access Journal |
| issn | 1476-0711 |
| language | English |
| last_indexed | 2024-04-12T18:55:30Z |
| publishDate | 2012-05-01 |
| publisher | BMC |
| record_format | Article |
| series | Annals of Clinical Microbiology and Antimicrobials |
| spelling | doaj.art-24be84318c99456881331260e4c314902022-12-22T03:20:20ZengBMCAnnals of Clinical Microbiology and Antimicrobials1476-07112012-05-011111110.1186/1476-0711-11-11Isolation of antibacterial compounds from <it>Quercus dilatata</it> L. through bioassay guided fractionationJamil Maryamul Haq IhsanMirza BushraQayyum Mazhar<p>Abstract</p> <p>Background</p> <p>Four medicinal plants (<it>Chrozophora hierosolymitana</it> Spreng<it>, Chrysanthemum leucanthemum</it> L., <it>Ephedra gerardiana</it> Wall. ex Stapf<it>,</it> and <it>Quercus dilatata</it> L.) used by indigenous healers to treat various infectious diseases were selected for the present study. The major objective of the present study was isolation and characterization of antimicrobial components from the crude plant extracts using bioassay guided fractionation.</p> <p>Methods</p> <p>Seven methanolic extracts of the four plants were screened to identify any antimicrobial agents present in them. The active crude plant extract was fractionated first by solvent partitioning and then by HPLC. Characterization of the active fractions was done by using spectrophotometer.</p> <p>Results</p> <p>All the seven methanolic extracts showed low antifungal activity, however, when these extracts were tested for antibacterial activity, significant activity was exhibited by two extracts. The extract of aerial parts of <it>Q. dilatata</it> was most active and therefore, was selected for further analysis. Initially fractionation was done by solvent-solvent partitioning and out of six partitioned fractions, ethanol fraction was selected on the basis of results of antibacterial activity and phytochemical analysis. Further, fractionation was carried out by RP- HPLC and purified active subfractions were characterized by comparing their absorption spectra with that of the known natural products isolated from the plants of Quercus genus.</p> <p>Discussion and conclusion</p> <p>The results suggest that this is the first report of the isolated antibacterial compounds from this genus.</p>http://www.ann-clinmicrob.com/content/11/1/11Absorption spectrumAntibacterial activityPhytochemical analysisRP-HPLC analysisSolvent partitioning |
| spellingShingle | Jamil Maryam ul Haq Ihsan Mirza Bushra Qayyum Mazhar Isolation of antibacterial compounds from <it>Quercus dilatata</it> L. through bioassay guided fractionation Annals of Clinical Microbiology and Antimicrobials Absorption spectrum Antibacterial activity Phytochemical analysis RP-HPLC analysis Solvent partitioning |
| title | Isolation of antibacterial compounds from <it>Quercus dilatata</it> L. through bioassay guided fractionation |
| title_full | Isolation of antibacterial compounds from <it>Quercus dilatata</it> L. through bioassay guided fractionation |
| title_fullStr | Isolation of antibacterial compounds from <it>Quercus dilatata</it> L. through bioassay guided fractionation |
| title_full_unstemmed | Isolation of antibacterial compounds from <it>Quercus dilatata</it> L. through bioassay guided fractionation |
| title_short | Isolation of antibacterial compounds from <it>Quercus dilatata</it> L. through bioassay guided fractionation |
| title_sort | isolation of antibacterial compounds from it quercus dilatata it l through bioassay guided fractionation |
| topic | Absorption spectrum Antibacterial activity Phytochemical analysis RP-HPLC analysis Solvent partitioning |
| url | http://www.ann-clinmicrob.com/content/11/1/11 |
| work_keys_str_mv | AT jamilmaryam isolationofantibacterialcompoundsfromitquercusdilatataitlthroughbioassayguidedfractionation AT ulhaqihsan isolationofantibacterialcompoundsfromitquercusdilatataitlthroughbioassayguidedfractionation AT mirzabushra isolationofantibacterialcompoundsfromitquercusdilatataitlthroughbioassayguidedfractionation AT qayyummazhar isolationofantibacterialcompoundsfromitquercusdilatataitlthroughbioassayguidedfractionation |