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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 | Cerebral phaeohyphomycosis caused by Fonsecaea monophora显示文摘 | Surash S Tyagi A De Hoog GS | | 0，，5： | 1 |
| 3 | Antioxidant activity and total phenolic content of methanol extracts of Ixora coccinea显示文摘 | Angeline Torey Sreenivasan Sasidharan Lachimanan Yoga Latha Sivaramakrishnan Sudhakaran Surash Ramanathan | 2010 | Pharmaceutical Biology2010，，10： | 1 |
| 4 | Endoscopic biopsy during third ventriculostomy in paediatric pineal region tumours显示文摘 | Al-Tamimi YZ Bhargava D Surash S | 2008 | Childs Nerv Syst2008，24，11： | 1 |
| 5 | Endoscopic biopsy during lhird ventrieulostomy in paediatric pineal region tumours 显示文摘 | Yahia A Deepti B Surash S | 2008 | Child''s Nervous System2008，24，11： | 1 |
| 6 | Cerebral phaeohyphomycosis caused by Fonsecaea monophora显示文摘 | Surash S Tyagi A De Hoog CS | 2005 | Med Mycol2005，43，5： | 1 |
| 7 | Cerebral phaeohyphomycosis caused by Fonsecaea monophora 显示文摘 | Surash S Tyagi A De Hoog GS | 2005 | Med Mycol2005，43，5： | 1 |
| 8 | Cerebral phaeohyphomycosiscaused by Fonsecaea monophora显示文摘 | Surash S Tyagi A De Hoog GS | 2005 | Med Mycol2005，43，5： | 1 |
| 9 | The conjugation of an AQP1-directed immunotoxin in the study of site-directed therapy within the CNS显示文摘 | Surash S Nemeth P Chakrabarty A | 2011 | Childs Nerv Syst2011，27，5： | 1 |
| 10 | Anxiolytic-like effects of mitragynine in the open-field and elevated plus-maze tests in rats显示文摘 | Ammar Imad Hazim Surash Ramanathan Suhanya Parthasarathy Mustapha Muzaimi Sharif Mahsufi Mansor | 2014 | The Journal of Physiological Sciences2014，，3： | 1 |
| 11 | Bilateral extradural hematoma formation following excision of a thoracic intradural lesion 显示文摘 | Surash S Bhargava D Tyagi A | 2009 | J Neurosurg Pediatr2009，3，2： | 1 |
| 12 | Cerebral phaeohyphomycosis caused by Fonsecaea monophora 显示文摘 | Surash S Tyagi A De Hoog GS | 2005 | Med Mycol2005，43，5： | 1 |
| 13 | Bilateral extradural hematoma formation following excision of a thoracic intraduml lesion 显示文摘 | Surash S Bhargava D Tyagi A | 2009 | J Neurosurg Pediatr2009，3，2： | 1 |
| 14 | The conjugation of an AQP1-directed immunotoxin in the study of site-directed therapy within the CNS显示文摘 | Surash S Nemeth P Chakrabarty A | 2011 | Childs Nerv Syst2011，27，5： | 1 |
| 15 | TiO2 - silica mediated one pot three component 1,3 -dipolar cycloaddition reaction:a facile and rapid synthesis of dispiro acenaphthenone/oxindole pyrroloisoquinoline ring systems 显示文摘 | Surash Babu A R Raghunathan R | 2007 | Tetrahedron2007，63，： | 1 |
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