منابع مشابه
New flavonoids from bioactive extract of Algerian medicinal plant Launeae arborescens.
OBJECTIVE To investigate the butanol fraction of the water/acetone extract and isolate of the new flavonoids from Launeae arboescens. METHODS The compounds were isolated by liquid chromatographic methods and their structures were identified by using spectroscopic analysis. RESULTS THE ISOLATED COMPOUNDS WERE IDENTIFIED AS: 7-O-[α-rhamnopyranosyl 4',5,6-Trihydroxy flavone 1,4',5'-Di-Methoxy ...
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Spectrometric analyses of flavonoids in twenty propolis samples, collected from ten different geographic localities in northern Croatia using two complementary methods, are reported. Flavones and flavonols were determined using aluminum chloride and expressed as quercetine equivalent while flavanones were determined using 2,4-dinitrophenylhydrazine and expressed as naringenin. Contents of flavo...
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Flavonoids are a heterogeneous group of polyphenolic compounds found ubiquitously in a wide variety of plants. Their chemical structure is based on 2-phenyl chromen, also known as flavan [1]. Flavonoids display a wide range of pharmacological properties, including antiinflammatory, antioxidative, antiviral, antibacterial and antiproliferative activities [1, 2]. Previous studies carried out by o...
متن کاملCharacterization and Antioxidant Properties of Six Algerian Propolis Extracts: Ethyl Acetate Extracts Inhibit Myeloperoxidase Activity
Because propolis contains many types of antioxidant compounds such as polyphenols and flavonoids, it can be useful in preventing oxidative damages. Ethyl acetate extracts of propolis from several Algerian regions show high activity by scavenging free radicals, preventing lipid peroxidation and inhibiting myeloperoxidase (MPO). By fractioning and assaying ethyl acetate extracts, it was observed ...
متن کاملPhenolics from Brazilian Propolis
Propolis, or bee glue, is a complex resinous mix ture of plant-derived products collected and used by bees as a general purpose sealer and antibiotic in their hives. It is reported to exhibit a broad spectrum of biological activities, including antibac terial, antiviral, antiinflammatory, cytotoxic etc. (Marcucci, 1995). It is widely used in folk medicine and also as an ingredient in “herbal”...
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ژورنال
عنوان ژورنال: Arabian Journal of Chemistry
سال: 2016
ISSN: 1878-5352
DOI: 10.1016/j.arabjc.2011.05.013