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| 1 | A comparative study on the antioxidant activity of methanolic leaf extracts of Ficus religiosa L,Chromolaena odorata(L.) King & Rabinson,Cynodon dactylon(L.) Pers.and Tridax procumbens L.显示文摘Objective:To compare the antioxidative effects of the methanolic leaf extracts of Ficus religiosa (F.religiosa),Chromolaena odorata(C.odorata),Cynodon dactylon(C.dactylon) and Trida,x procumbens(T.procumbens) as well as the contents of antioxidants in the extracts.Methods: Total phenol and total flavanoid contents were measured according to the standard procedures. The total antioxidant capacity was determined using the phosphomolybdenum method.Reducing power was determined by the potassium ferrieyanide reducing method.The free radical scavenging activity was measured by 2,2’-Diphenyl-l-picrylhydrazyl(DPPH) assay.Results: Quantitative phytochemical analysis of total phenol content showed that C.odorata had the highest content of phenolic compounds significantly followed by F.religiosa,T.procumbens and C.dactylon.As for the total flavanoids content,F.religiosa had the highest content,followed by C.odorata,T.procumbens and C.daxtylon.Study on the total antioxidant capacity revealed that F.religiosa,C.dactylon and C.odorata showed higher total antioxidant capacity.T.procumbens showed the lowest capacity.Meanwhile,T.procumbens and C.odorata have the highest reducing power activity followed by F.religiosa and C.dactylon.The results of DPPH radical scavenging activity indicated that T.procumbens induced the largest elevation as the concentration of its extract increased,followed by C.odorata and F.religiosa and C.dactylon.Conclusions:The present study demonstrates the antioxidative capacity of all the four plant species.Of all the plants,C.odorata,a perennial weed plant showed potentially a high antioxidant activity,with higher phenolic and flavonoids contents.The data suggest that C.odorata can be best utilized in developing bioantioxidants. | Melinda Krishanti P Xavier Rathinam Marimuthu Kasi Diwakar Ayyalu Ramanathan Surash Kathiresan Sadasivam Sreeramanan Subramaniam | 2010 | Asian Pacific Journal of Tropical Medicine2010，3，5： | 6 |
| 2 | Inhibitors of VIM-2 by screening pharmacologically active and click-chemistry compound libraries显示文摘 | Minond D Adrian SA Subramaniam P | 2009 | Bioorganic & Med Chemist2009，17，14： | 1 |
| 3 | An in vitro evaluation of pH variations in calcium hydroxide liners显示文摘 | Subramaniam P Konde S Prashanth P | 2006 | J Indian Soc Pedod Prey Dent2006，24，3： | 1 |
| 4 | Continuous positive airway pressure versus tbeophylline for apnea in preterm infants显示文摘 | Henderson -Smart DJ Subramaniam P Davis PG | 2001 | Co- chrane Database Syst Rev2001，，00： | 1 |
| 5 | Zine oxide eugenol and metapex as root canal filling materials in primary molars-a comparative clinical study显示文摘 | Subramaniam P Gilhotra K Endoflas | 2011 | J Clin Pediatr Dent2011，35，4： | 1 |
| 6 | SHV-5 extended-spectrum β-lactamases in clinical isolates of Escherichia coli in Malaysia 显示文摘 | Subramaniam G Palasubramaniam S Navaratnam P | 2006 | Indian J Med Microbiol2006，24，3： | 1 |
| 7 | Anatomical effects of impact noise显示文摘 | Henderson D Spongr V Subramaniam M Campo P | | 0，，： | 1 |
| 8 | The impact of individual reminis- cence therapy for people with dementia:systematic review显示文摘 | Subramaniam P Woods B | 2012 | Expert Rev Neurother2012，12，5： | 1 |
| 9 | Papillon-lefevre syndrome: A case report 显示文摘 | Subramaniam P Mathew S Gupta KK | 2008 | Indian Soc Pedod Prev Dent2008，26，： | 1 |
| 10 | Phylogenetic position of Riemerella anatipestifer based on 16S rRNA gene sequences显示文摘 | Subramaniam S Kuhnert P Frey J | 1997 | International Journal of Systematic Bacteriology1997，47，： | 1 |
| 11 | The effect of ' condi- tioning' exposures on hearing loss from traumatic exposure 显示文摘 | Campo P Subramaniam M Henderson D | 1991 | Heating Res1991，55，2： | 1 |
| 12 | Prophylactic nasal continuous positive airways pressure for preventing morbidity and mortality in very preterm infants显示文摘 | Subramaniam P Henderson-Smart DJ Davis PG | 2005 | Cochrane Database Syst Rev2005，，00： | 1 |
| 13 | The effect of exposure level on the development of progressive resistance to noise显示文摘 | SUBRAMANIAM M CAMPO P HENDERSON D | 1991 | Hear Res1991，52，1： | 1 |
| 14 | 显示文摘 | Kaiser A B Subramaniam C K Gilberd P W | 1995 | Synthetic Metals1995，69，13： | 1 |
| 15 | Digital Simulation of a Synchronous Generator in Direct-phase Quantities显示文摘 | Subramaniam P Malik O P | 1971 | Proc IEE1971，118，1： | 1 |
| 16 | Generalized A- nalysis of Gasifier Performance using Equilibrium Modeling显示文摘 | Anapagaddi R Thiruvengadam R Subramaniam P | 2011 | In- dustrial & Engineering Chemistry Research2011，7，： | 1 |
| 17 | The effect of ‘conditioning' exposures on hearing loss from traumatic exposure显示文摘 | CAMPO P SUBRAMANIAM M HENDERSON D | 1991 | Hear Res1991，55，2： | 1 |
| 18 | Changes in distortion product otoacoustic emissions and outer hair cells following interrupted noise exposures 显示文摘 | Subramaniam M Salvi R J Spong V P | 1994 | Hear Res1994，74，12： | 1 |
| 19 | In situ formation of large-scale Ag/AgCl nanoparticles on layered titanate honeycomb by gas phase reaction for visible light degradation of phenol solution显示文摘 | Tang Y X Subramaniam V P Lau T H | 2011 | Applied Catalysis B:Environmental2011，106，34： | 1 |
| 20 | The activation of the potato PR-10a gene requires the phos- phorylation of the nuclear factor PBF-I显示文摘 | DESPRES C SUBRAMANIAM R MATRON D P | 1995 | The Plant Cell1995，7，5： | 1 |
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