نتایج جستجو برای: ethyl acetate

تعداد نتایج: 77179  

Journal: :Fuel 2016

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Journal: :World Journal Of Advanced Research and Reviews 2021

Antioxidants are chemicals that possess bioactive constituents which usually allow them to fight against free radicals. Antioxidant and phytochemicals properties of the leaves Synsepalum dulcificum were investigated using ethyl-acetate, ethanol methanol extracts. 2, 2-diphenyl-picrylhydrazyl (DPPH) scavenging activity, total antioxidant ferric reducing power (FRAP), flavonoid phenolic content w...

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2014
Kavitha Murugan Vidhya V. Iyer

The results of our previous investigations on extracts of selected marine algae showed that Caulerpa peltata and Padina gymnospora had more promising antiproliferative and antioxidant activities than Gelidiella acerosa and Sargassum wightii. Based on these results, the more active chloroform extract of C. peltata and ethyl acetate extract of P. gymnospora were further analyzed for their constit...

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ژورنال: فصلنامه علمی پژوهشی گیاهان دارویی 2011
Ajani , Y, Gohari , AR, Malmir, M, Saeidnia , S , Yazdanpanah , M,

Background: The genus Lomatopodium Fisch. & C.A.Mey., belongs to Apiaceae family and contains one herbaceous species growing wildly in Iran. There are only a few papers about the chemical constituents of these plants. Here, we focused on the isolation and identification of the main flavonoid glycosides and sterols from the aerial parts of L. staurophyllum, which has not been previously reported...

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Journal: Iranian Journal of Chemistry and Chemical Engineering 2013
Afzal Ahmad Hayat Khan, Mansoor ul Hassan Shah Muhammad Imran Ahmad, Muhammad Younas

Alkaline hydrolysis of ethyl acetate is essentially an irreversible and second order reaction. Industrial importance of the reaction product, sodium acetate, necessitate for process improvement in terms of maximum conversion and economical usage of raw materials. Statistical design of experiments was utilized to enhance conversion in both batch and plug flow reactors.A full two level factor...

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Journal: :avicenna journal of phytomedicine 0
daniel lotanna ajaghaku department of pharmacology and toxicology, faculty of pharmaceutical sciences, nnamdi azikiwe university, awka, anambra state, nigeria okechukwu obasi department of pharmaceutical and medicinal chemistry, faculty of pharmaceutical sciences, nnamdi azikiwe university, awka, anambra state, nigeria blessing ogechukwu umeokoli department of pharmaceutical and medicinal chemistry, faculty of pharmaceutical sciences, nnamdi azikiwe university, awka, anambra state, nigeria peter ogbuatu department of pharmaceutical and medicinal chemistry, faculty of pharmaceutical sciences, nnamdi azikiwe university, awka, anambra state, nigeria chukwuemeka sylvester nworu department of pharmacology and toxicology, faculty of pharmaceutical sciences, university of nigeria, nsukka, enugu state, nigeria emmanuel emeka ilodigwe department of pharmacology and toxicology, faculty of pharmaceutical sciences, nnamdi azikiwe university, awka, anambra state, nigeria

objective: alchornea floribunda leaves are widely used in ethnomedicine for the management of immuno-inflammatory disorders. we investigated the in vivo and in vitro antioxidant activity of the leaf extract, fractions and isolated compounds of a. floribunda.materials and methods: the ethyl acetate fraction of the methanol leaf extract was subjected to several chromatographic separations to isol...

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Journal: :research journal of pharmacognosy 2014
m.r. delnavazi s. tavakoli a. rustaie h. batooli n. yassa

background and objectives: dorema ammoniacum d. don (apiaceae) is a monocarpic plant endemic to central iran. the gum resin of this species is a known therapeutic agent in iranian, indian and western traditional medicines. the aim of the present study was to investigate essential oil constituents and evaluation of antioxidant and antibacterial activities of the essential oils and extracts of d....

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Journal: :international journal of molecular and cellular medicine 0
shima famil samavati department of biology, islamic azad university, science and research branch, tehran, iran.سازمان اصلی تایید شده: دانشگاه آزاد اسلامی علوم و تحقیقات (islamic azad university science and research branch) hamid-reza mohammadi-motlagh medical biology research center, kermanshah university of medical sciences, kermanshah, iran.سازمان اصلی تایید شده: دانشگاه علوم پزشکی کرمانشاه (kermanshah university of medical sciences) ali mostafaie medical biology research center, kermanshah university of medical sciences, kermanshah, iran.سازمان اصلی تایید شده: دانشگاه علوم پزشکی کرمانشاه (kermanshah university of medical sciences)

abstract our previous studies showed that various extracts of persian shallot (allium hirtifolium) have anti-angiogenic effects. this study has been undertaken to isolate and identify the major effective anti-angiogeneic sub-fraction of shallot. after preparation of the 50% hydroalcoholic extract of shallot bulbs, the extract was successively fractionated into n-hexane, ethyl acetate, n-butanol...

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Journal: :journal of pharmaceutical and health sciences 0
seyede nargess sadati lamardi department of traditional pharmacy, school of traditional medicine, tehran university of medical sciences sepideh ghambariyan department of phytochemistry, islamic azad university-pharmaceutical sciences branch, (iaups), tehran, iran. mohammad reza shams ardekani persian medicine and pharmacy research center, tehran university of medical sciences, tehran, iran gholamreza null amin herbal medicines research center, pharmaceutical sciences branch, islamic azad university, tehran-iran (hmrc)

polygonatum orientale desf. (asparagaceae) is herbaceous and perennial plant grown in northern parts of iran. the rhizomes of polygonatum, known as iranian shaghagho, is used in iranian traditional medicine as tonic, aphrodisiac, wound healing, lightening, kidney stone remedy, gynecological and internal wounds healing, anti-gout and rheumatism, and anti-diabetic. the aim of this study was to ev...

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2016
Preeti Rawat Lokesh M. Saroj Anil Kumar Tryambak D. Singh SK. Tewari Mahesh Pal

BACKGROUND The plant Launaea procumbens belongs to the family Asteraceae and traditionally used in the treatment rheumatism, kidney, liver dysfunctions and eye diseases. In the present study Phytochemical analysis and fractions of methanolic extract of L. procumbens leaves were tested in vitro for their cytotoxicity. OBJECTIVES Phytochemical analysis and cytotoxic activity of methanolic extra...

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