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Please use this identifier to cite or link to this item: http://142.54.178.187:9060/xmlui/handle/123456789/16431
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dc.contributor.authorDONIA, ABD EL RAHEIM MOHAMMED-
dc.contributor.authorALQASOUMI, SALEH IBRAHIM-
dc.contributor.authorAWAAD, AMANI SHAFEEK-
dc.contributor.authorCRACKER, LYLE-
dc.date.accessioned2023-01-20T07:40:16Z-
dc.date.available2023-01-20T07:40:16Z-
dc.date.issued2011-04-08-
dc.identifier.citationABD EL RAHEIM MOHAMMED, D. O. N. I. A., Alqasoumi, S. I., Awaad, A. S., & Cracker, L. (2011). Antioxidant activity of Covolvulus hystrix Vahl and its chemical constituents. Pak. J. Pharm. Sci, 24(2), 143-147.en_US
dc.identifier.issn1011-601X-
dc.identifier.urihttp://142.54.178.187:9060/xmlui/handle/123456789/16431-
dc.description.abstractTotal alcohol and successive extracts (diethyl ether, chloroform, ethyl acetate and n-butanol) of Covolvulus hystrix Vahl were screened for their antioxidant activity using free radical 2-2- diphenyl-1-picrylhydrazyl (DPPH) and Trolox as reference substance. The tested extracts showed variable antioxidant activities. The highest antioxidant activity was achieved in total alcohol (48.32%) followed by ethyl acetate (37. 8 %) and nbutanol (32.96 %) extracts. From the ethyl acetate extract four compounds were isolated and identified as quercetin, quercetin 3-0-rutinoside and quercetin-7-O-rhamnoside in addition to ferulic acid using different spectroscopic analysis such as, 1 HNMR, 13CNMR, COSY, HMBC and HMQCen_US
dc.language.isoenen_US
dc.publisherKarachi: Faculty of Pharmacy & Pharmaceutical Sciences University of Karachien_US
dc.subjectAntioxidant activityen_US
dc.subjectConvolvulus hystrixen_US
dc.subjectflavonoidsen_US
dc.subjectferulic aciden_US
dc.subjecttotal phenolicsen_US
dc.titleANTIOXIDANT ACTIVITY OF COVOLVULUS HYSTRIX VAHL AND ITS CHEMICAL CONSTITUENTSen_US
dc.typeArticleen_US
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