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http://localhost:80/xmlui/handle/123456789/16431Full metadata record
| DC Field | Value | Language |
|---|---|---|
| dc.contributor.author | DONIA, ABD EL RAHEIM MOHAMMED | - |
| dc.contributor.author | ALQASOUMI, SALEH IBRAHIM | - |
| dc.contributor.author | AWAAD, AMANI SHAFEEK | - |
| dc.contributor.author | CRACKER, LYLE | - |
| dc.date.accessioned | 2023-01-20T07:40:16Z | - |
| dc.date.available | 2023-01-20T07:40:16Z | - |
| dc.date.issued | 2011-04-08 | - |
| dc.identifier.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. | en_US |
| dc.identifier.issn | 1011-601X | - |
| dc.identifier.uri | http://142.54.178.187:9060/xmlui/handle/123456789/16431 | - |
| dc.description.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 | en_US |
| dc.language.iso | en | en_US |
| dc.publisher | Karachi: Faculty of Pharmacy & Pharmaceutical Sciences University of Karachi | en_US |
| dc.subject | Antioxidant activity | en_US |
| dc.subject | Convolvulus hystrix | en_US |
| dc.subject | flavonoids | en_US |
| dc.subject | ferulic acid | en_US |
| dc.subject | total phenolics | en_US |
| dc.title | ANTIOXIDANT ACTIVITY OF COVOLVULUS HYSTRIX VAHL AND ITS CHEMICAL CONSTITUENTS | en_US |
| dc.type | Article | en_US |
| Appears in Collections: | Issue 02 | |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| Paper-8.htm | 142 B | HTML | View/Open |
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