Publications (5580)
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Antioxidant and antibacterial activities of polyphenols from ethnomedicinal plants of Burkina Faso
KAROU, D., Mamoudou H. DICKO, SIMPORE, J., and Traoré, A. SPolyphenols from four medicinal plants of Burkina Faso, Combretum micranthum, Khaya senegalensis, Pterocarpus erinaceus and Sida acuta, were screened for their antioxidant and antimicrobial activities against pathogenic bacteria. The medicinal plants displayed different polyphenols contents and...
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Evaluation of the Effect of Germination on Phenolic Compounds and Antioxidant Activities in Sorghum Varieties
DICKO, Mamoudou. H., GRUPPEN, H., TRAORE, A. S.; van BERKEL, W. J. H. and VORAGEN, A. G. J.The screening of 50 sorghum varieties showed that, on average, germination did not affect the content in total phenolic compounds but decreased the content of proanthocyanidins, 3-deoxyanthocyanidins, and flavan-4-ols. Independent of germination, there are intervarietal differences in...
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Voltammetric assay of Guaifenesin in pharmaceutical formulation
I. TAPSOBAThe electrochemical oxidation of Guaifenesin in a pharmaceutical formulation containing Guaifenesin has been carried out in Britton–Robinson buffer (BRB)(0.04 mol L− 1) on platinum electrode. Guaifenesin exhibits a well-defined irreversible oxidation peak at 0.924 V/ref. The influence of pH...
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Logiques d'intérêts socio-économiques et participation paysanne à la gestion des ressources naturelles dans le terroir de Ziga
M. KIEMTORE, J. N. TRAORE/GUE, A. MAIGA, J. S. ZOUNDINéant
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Photoacoustic Approach to Direct Determination of the Total Phenolic Content in Red Sorghum Flours
DOKA, O.; BICANIC, D. D.; Mamoudou H. DICKO and Slingerland, M. A.Photoacoustic (PA) spectroscopy in the ultraviolet and visible was demonstrated to be a suitable tool for direct determination of total phenolic content in red sorghum flours. The PA spectra obtained feature two characteristic peaks: the first centered at 285 nm is due to the aromatic amino...
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Using Habitat and Assets as Household Wealth Indexes: Methods and Policy Implications
Kobiané, Jean-FrançoisLa disponibilité des informations sur les caractéristiques de l'habitat et les biens possédés par les ménages dans les enquêtes démographiques, permet de plus en plus une étude des interrelations entre pauvreté et comportements socio-démographiques. Toutefois, les méthodologies de...
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Field evaluation of the efficacy and persistence of insect repellents DEET, IR3535, and KBR 3023 against Anopheles gambiae complex and other Afrotropical …
A. BADOLOSynthetic insect repellents, IR3535 and KBR 3023 (also known as picaridin, or by the trade name Bayrepel®), were tested in Burkina Faso against mosquito vectors of disease to compare their relative efficacy and persistence profiles to those of the 'gold standard'DEET. Collection of> 49 000...
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Validation of gentamicin congeners using HPLC with electrochemical detection: Comparison with fluorimetric detection
Touridomon Issa Some, Rasmané Semdé, Moustapha Ouedraogo, Karim Amighi, Pierre I. Guissou, Pierre Duez and Jacques DuboisOPA is often used as an off-line derivatisation agent for fluorimetric detection in gentamicin analysis. As, in general, electrochemical detection is more sensitive than fluorimetric detection, the analysis of gentamicin as its OPA derivatives by high-performance liquid chromatography and...
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Electroxidation of ortho-substituted aromatic amines mechanistic investigation
I. TAPSOBAThe anodic oxidation of ortho-substituted aromatic amines has been investigated at a platinum electrode in aprotic solvent by cyclic voltammetry and controlled potential coulometry. In neutral medium, the radical cation stemming from the electron transfer undergoes deprotonation and a...
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Validation d'une méthode de dosage des caroténoïdes par CLHP: application à la détermination de teneur en caroténoïdes dans dix variétés de patates douces (Ipo...
Issa T. Somé , Marie-Noël Zagré , Patrick E. Kafando , Mohamed Ag Bendech , Shawn K. Baker , Hélène Deslile , Pierre I. GuissouRésumé La carence en vitamine A (CVA) concerne plus de 250 millions d'enfants âgés de moins de cinq ans dans le monde. Cette carence et ses conséquences sanitaires sont surtout ressenties dans les pays en voie de développement. Trois approches complémentaires sont préconisées pour...
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Electrochemical reduction of N-thioamidoimidates: application to the synthesis of thiazolo[5,4-d]thiazoles
I. TAPSOBAThe reduction of N-thioamidoimidates (1) has been examined in aprotic media at a mercury electrode. As shown by cyclic voltammetry at fast scan rates and controlled potential electrolysis, an overall irreversible one electron transfer is followed by a rapid second order chemical reaction leading...
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Perception paysanne de la dégradation de l'environnement sur le pourtour du lac du barrage de la Kompienga (Burkina Faso)
DIPAMA Jean-MarieL'implantation du barrage hydroélectrique sur le cours de la Kompienga a engendré une dégradation de l'environnement sur l'ensemble du bassin versant. Par ailleurs, la présence d'un important plan d'eau et les potentialités agro-écologiques sont à l'origine d'important flux migratoires...
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SILICON SOLAR CELL RECOMBINATION PARAMETERS DETERMINATION UNDER FREQUENCY MODULATED WHITE LIGHT USING THE SHORT CIRCUIT CURRENT PHASE
I. Zerbo, Z. Koalaga, F. I. Barro, F. Zougmore, A.L.Ndiaye, A. Diao, G. SissokoThe purpose of this work is to present a new technique for determining recombination parameters of excess minority
carrier in a multicristallin silicon solar cell under frequency modulated multispectral light.
The complex photocurrent density Jph (ω, L) is presented as a calibrated function...