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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 | Control of volatile organic compounds by an AC energized ferroelectric pellet reactor and a pulsed corona reactor显示文摘 | Yamamoto K Ramanathan P A Lawless | 1992 | IEEE Trans Ind Applicat1992，28，2： | 2 |
| 3 | Powder dispersion and aqueous tape casting of YSZ-NiO composite 显示文摘 | RAMANATHAN S KRISHNAKUMAR K P DE P K | 2004 | J Mater Sci2004，39，： | 1 |
| 4 | The Indian Ocean Experiment and the Asian Brown Cloud显示文摘 | RAMANATHAN V CRUTZEN P J MITAR A P | 2002 | Current Science2002，83，： | 1 |
| 5 | A case of leukoencephalopathy,cerebral calcifications and cysts显示文摘 | Gulati A Singh P Ramanathan S | 2011 | Ann Indian Acad Neurol2011，14，4： | 1 |
| 6 | The Indian Ocean experiment: an integrated analysis of the climate forcing and effects of the great Indo-Asian haze显示文摘 | RAMANATHAN V CRUTZEN P J LELIEVELD J | 2001 | J Geophys Res2001，106，22： | 1 |
| 7 | Atmosphere: aerosols,climate and the hydrological cycle 显示文摘 | Ramanathan V Crutzen P J Kiehl J T | 2001 | Science2001，294，： | 1 |
| 8 | Control of volatile organic compounds by an ac energized ferroelectric pellet reactor and a pulsed corona reactor显示文摘 | YamamotoT Ramanathan K Lawless P A | 1992 | IEEE Transactions Industry Application1992，28，5： | 1 |
| 9 | Aerosols,Climate,and the Hydrological Cycle显示文摘 | Ramanathan V Crutzen P J KIEHL J T | 2001 | Science2001，，294： | 1 |
| 10 | A layer-by-Iayer approach to natural polymer-derived bioactive coatings on magnesium alloys显示文摘 | KUNJUNKUNJU S ROY A RAMANATHAN M LEE B CANDIELLO J E KUMTA P N | 2013 | Acta Biomaterialia2013，9，： | 1 |
| 11 | Atmosphere-aerosols,Climate and the Hydrological Cycle显示文摘 | Ramanathan V Crutzen P J Kiehl J T | 2002 | Science2002，294，5549： | 1 |
| 12 | Effect of DL-alpha-lipoic acid on mitochondrial enzyme s in aged rats显示文摘 | ARIVAZHAGAN P RAMANATHAN K PANNEERSELVAM C | | 0，，02： | 1 |
| 13 | The moderating roles of risk and efficiency on the relationship between logistics performance and customer loyalty in e-commerce显示文摘 | Ramanathan P | 2010 | Transportation Research Part E: Logistics and Transportation Review2010，46，6： | 1 |
| 14 | Packet-dispersiontechniques and a capacity-estimation methodology 显示文摘 | Dovrolis C Ramanathan P Moore D | 2004 | IEEE/ACM Trans on Networking2004，12，6： | 1 |
| 15 | Effect of DL-alpha- lipoic acid on glutathione metabolic enzymes in aged rats 显示文摘 | Arivazhagan P Ramanathan K Panneerselvam C | 2001 | Exp Gerontol2001，37，1： | 1 |
| 16 | Micromotor dynamics in lubricating fluids显示文摘 | Deng K Ramanathan G P Mehregany M | 1994 | J Micromech Microeng1994，4，： | 1 |
| 17 | Aerosols, cli- mate, and the hydrological cycle显示文摘 | Ramanathan V Crutzen P J Kiehl J T | 2001 | Science2001，294，5549： | 1 |
| 18 | Designing an on-demand multimedia service显示文摘 | RANGAN P V VIN H M RAMANATHAN S | 1992 | IEEE Communications Magazine1992，30，7： | 1 |
| 19 | 5-fluorouracil (5-FU) treatment does not influence invasion and metastasis in microsatellite unstable(MSI-H) colorectal cancer显示文摘 | Warusavitame J Ramanathan P Kaufman A el al | 2006 | Int J Colorectal Dis2006，21，7： | 1 |
| 20 | The Indian Ocean Experiment and the Asian Brown Cloud 显示文摘 | Ramanathan V Crutzen P J Mitra A P | 2002 | Current Science2002，83，8： | 1 |
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