Antioxidant Activity and Total Phenolic Contents of some Traditional Medicinal Plants from Zimbabwe
| Autor: | Tafadzwa Munodawafa, Lameck Shoriwa Chagonda, Deniz Iklim Viol, Ali H. Meriçli, Sylvester Rodgers Moyo, Maud Muchuweti |
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| Rok vydání: | 2013 |
| Předmět: |
Pharmacology
Antioxidant Traditional medicine biology DPPH Khaya anthotheca medicine.medical_treatment Plant Science Toxicology biology.organism_classification Agricultural and Biological Sciences (miscellaneous) Gymnosporia senegalensis chemistry.chemical_compound Complementary and alternative medicine chemistry Drug Discovery Phytochemical composition medicine Gallic acid Medicinal plants Rhus chirindensis |
| Zdroj: | Journal of Biologically Active Products from Nature. 3:345-352 |
| ISSN: | 2231-1874 2231-1866 |
| Popis: | Fourteen (14) medicinal plants used by traditional medical practitioners in treating sexually transmitted diseases and common ailments were selected after an ethno-botanical survey of five districts from Zimbabwe. Plant extracts were screened for phytochemical composition, antioxidant activity by reducing 2,2-diphenyl-picrylhydrazyl (DPPH) free radical with ®-carotene as reference and through total phenolic content (TPC) by Folin-Ciocalteu reagent using gallic acid as reference. Ten (10) of the twenty-eight (28) methanolic extracts exhibited strong antioxidant activity with percentages equal or greater than 90 % compared to reference ®-carotene (99 %). Antioxidant activity for Rhus chirindensis, Khaya anthotheca, Gymnosporia senegalensis and Flacourtica indica was equal or greater than 95 %. Their TPCs ranged from 0.596 mg/mg to 0.105 mg/mg GAE. The TPC in some of the extracts correlate with their antiradical activity (r2=0.57) confirming that the phenolics are the likely cause of the radical scav... |
| Databáze: | OpenAIRE |
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