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The antioxidant activity of the aqueous ethanolic extract of Doum leaves, Hyphaene thebaica L. (Palmae), was studied. Data obtained showed that the extract scavenged superoxide anion radicals (IC50=1602 μg/ml) in a dose dependant manner using xanthine/hypoxanthine oxidase assay. Four major flvonoidal compounds were identified by LC/SEI as; Quercetin glucoside, Kaempferol rhamnoglucoside, Dimeth...

A new flavonoid, acacetin-7-O-β-D-glucopyranosyl-(1 → 2)-β-D-glucuronopyranoside (1), together with four known flavonoids, apigenin-7-O-β-D-glucopyranosyl-(1 (2), acacetin (3), acacetin-7-O-β-D-glucuronide (4) and genkwanin-5-O-primveroside (5) were isolated from the leaves of Glyphaea brevis. Their structures elucidated by spectroscopic techniques. The compounds (1 - 5) tested for their antiox...

The complex [Cr(3,7diHF)3] ̈ 3H2O (3,7diHF is the monoanion of flavonoid 3,7-dihydroxyflavone) was synthetized and characterized by mass spectrometry, thermogravimetry, UV-Vis and FTIR spectroscopies. The data indicated that the coordination of the chromium(III) ion to the flavonoid increased its thermal stability.

This report gives 74 funct ions appropriate to use to test programs which solve one nonl inear equat ion in ofie real variable . The funct ions are given in a Fortran subrout ine as a two-dimensional array . A SET OF 74 TEST FUNCTIONS FOR WO* 'LINEAR F.OUATION SOLVERS INTRODUCTION AMP SUT1MA n Y: Tliis report «ives 74 functions in FORTRAN code which have been gathered as a set of test funct ion...