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http://142.54.178.187:9060/xmlui/handle/123456789/16431| Title: | ANTIOXIDANT ACTIVITY OF COVOLVULUS HYSTRIX VAHL AND ITS CHEMICAL CONSTITUENTS |
| Authors: | DONIA, ABD EL RAHEIM MOHAMMED ALQASOUMI, SALEH IBRAHIM AWAAD, AMANI SHAFEEK CRACKER, LYLE |
| Keywords: | Antioxidant activity Convolvulus hystrix flavonoids ferulic acid total phenolics |
| Issue Date: | 8-Apr-2011 |
| Publisher: | Karachi: Faculty of Pharmacy & Pharmaceutical Sciences University of Karachi |
| Citation: | ABD 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. |
| Abstract: | Total 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 HMQC |
| URI: | http://142.54.178.187:9060/xmlui/handle/123456789/16431 |
| ISSN: | 1011-601X |
| Appears in Collections: | Issue 02 |
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| File | Description | Size | Format | |
|---|---|---|---|---|
| Paper-8.htm | 142 B | HTML | View/Open |
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