Publications (5593)
ARTICLE
Zymography of Monophenolase and o-Diphenolase Activities of Polyphenol Oxidase
DICKO Mamoudou. H., HILHORST, R., GRUPPEN, H., LAANE, C., van BERKEL, W. J. H. and VORAGEN, A. G. J
A new procedure for the zymography of monophenolase and o-diphenolase activities of polyphenol oxidase (PPO), and peroxidase (POX) is proposed using a highly sensitive, chromogenic nucleophile 3-methyl-2-benzothiazolinone hydrazone (MBTH), which traps quinones. The procedure allowed the distinction between PPO isoenzymes from sorghum and mushr(...)
polyphenol oxidase, peroxidase, zymography, activity staining, isoenzymes, mushroom
ARTICLE
Comparison of the content of phenolic compounds, polyphenol oxidase and peroxidase in grains of fifty sorghum varieties
140. DICKO Mamoudou. H., HILHORST, R., GRUPPEN, H., TRAORE, A. S., LAANE, C., van BERKEL, W. J. H. and VORAGEN, A. G. J.
Analysis of fifty sorghum [Sorghum bicolor (L.) Moench] varieties used in Burkina Faso showed that they have different contents of phenolic compounds, peroxidase (POX), and polyphenol oxidase (PPO). Most of the varieties (82%) had a tannin content less than 0.25% (w/w). POX specific activity was higher than the monophenolase and o-diphenolase(...)
Phenolic compounds, ,tannins, ,polyphenol oxidase, ,peroxidase
ARTICLE
IR and UV-Visible spectra of iron (II) phthalocyanine complexes with phosphine or phosphite
A. Zanguina, M. Bayo - Bangoura, K. Bayo, G.V. Ouédraogo.
We have prepared and studied by vibrational and electronic spectrometry of a series
of ferrophthalocyanine complexes with phosphine or phosphite axial ligands [PMe3, P(OMe)3, PPh3, P(OPh)3, PPh(OMe)3 and POH(OEt)2]. With PMe3, P(OMe)3 as ligands, only hexacoordinated
complexes are obtained but with PPh3, P(OPh)3 and POH(OEt)2 as ligands, the(...)
Iron(II) phthalocyanine complexes, Phosphine, Phosphite, Vibrational spectrometry of ferrophthalocyanine complexes
ARTICLE
Super-représentations faibles de superalgèbres de Malcev
Akry Koulibaly, Marie Françoise Ouedraogo
Cet article donne des propriétés de superalgèbres de Malcev sur un corps de caractéristique zéro. Nous généralisons le concept de représentation d'algèbres de Malcev aux superalgèbres de Malcev. Soit K un corps de caractéristique zéro. On sait qu'une superalgèbre est dite de Malcev si son enveloppe grassmannienne est une algèbre de Malcev. Co(...)
Algèbre de Malcev, superalgèbre de Malcev, superalgèbre triple de Lie, super-représentation de Malcev
ARTICLE
Supersystèmes triples de Lie associés aux superalgèbres de Malcev
Akry Koulibaly, Marie Françoise Ouedraogo
Dans cet article. Nous définissons les notions de superalgèbres triples de Lie et de super-systèmes triples de Lie. Nous montrons qu'une superalgèbre de Malcev peut être munie d'une structure de superalgèbre triple de Lie et aussi d'une structure de supersystème triple de Lie. Nous prolongeons la notion de super-représentation faible aux su(...)
superalgèbre de Malcev, super-représentation de Malcev
ARTICLE
COMPOSITION CHIMIQUE ET ACTlVITES ANTIBACTERIENNES DES HUILES ESSENTIELLES DES FEUILLES ET DES FLEURS DE CYMBOPOGON PROXIMUS (STAPF.) ET D'OCIMUM CANUM (SIMS)
BASSOLE, I. H. N. ,OUATTARA A. S. ,NEBIE R ., OUATTARA, C. A. T ., KABORE, Z ., TRAORE, S.A
The chemical composition of the essential oils of Cymbopogon proximus and Ocimum canum obtained from the air-dried leaves and jlowers were analysed using GC and GC-MS Cymbopogon proximus leaves belonged to piperitone chemotype and Ocimum canum leaves andflowers belonged to 1,8-cineole (61,2 %) and le cis + trans piperitol (68,(...)
Cymbopogon proximus, Ocimum canum, Poaceae, Lamiaceae, essential oil, antibacterial activity
ARTICLE
Stability parameter estimation at ambient temperature from studies at elevated temperatures
Touridomon Issa Some, Philippe Bogaerts, Raymond Hanus, Jacques Dubois and Michel Hanocq
The determination of specific kinetic constants ki in pH–profile studies is often undertaken at ambient temperature. However, when dealing with a drug substance that is stable at ambient temperature, the pH–profile study is conducted at a chosen elevated temperature and the kinetic parameters are given at this particular elevated temperature.(...)
Mots clés non renseignés
ARTICLE
Modulation by propranolol of the uptake of ethidium bromide by rat submandibular acinar cells exposed to a P2X7 agonist or to maitotoxin
E. KABRE
We have compared the formation of pores in rat submandibular acinar cells in response to 2′, 3′-O-(4-benzoylbenzoyl) adenosine 5′-triphosphate (Bz-ATP) and maitotoxin. Bz-ATP (100 μM) permeabilized the cells to ethidium bromide. The uptake of ethidium increased to 29±1% of maximal uptake in 10 min. dl-Propranolol (300 μM) inhibited the Bz-ATP-(...)
Mots clés non renseignés
ARTICLE
Polysaccharide hydrolases from Boscia senegalensis: purification and characterization of endo-1,3-beta-glucanase
DICKO Mamoudou. H., Searle-van LEEUWEN, HILHORST, R., TRAORE, A. S. and Beldman, G.
The leaves of Boscia senegalensis are traditionally used in West Africa in cereal protection against pathogens, pharmacologic applications, and food processing. Activities of a-amylase, b-amylase, exo-(1®3, 1®4)-b-Dglucanase, and endo-(1®3)-b-D-glucanase were detected in these leaves. The endo-(1®3)-b-D-glucanase (EC 3.2.1.39) was purified 203(...)
a-Amylase, ,b-amylase, ,b-glucanase, ,yeast glucan, ,high-performance liquid chromatography, ,MALDI-TOF-MS
ARTICLE
The lower susceptibility to Plasmpdium falciparum malaria of Fulani of Burkina Faso (West Africa) is associated with low frequencies of classic malaria-resistance …
K. SIMPORE
The gene frequencies in 1993–1994 for haemoglobin S, haemoglobin C, alpha− 37 deletional thalassaemia, G6PDA−, HLA B∗ 5301 were estimated in Fulani, Mossi and Rimaibé ethnic groups of Burkina Faso, West Africa. The aim of the study was to verify whether the previously reported Fulani lower susceptibility to Plasmodium falciparum malaria was as(...)
Mots clés non renseignés
ARTICLE
Chromatographic determination of 8-oxo-7,8-dihydro-2′-deoxyguanosine in cellular DNA: A validation study
Pierre Duez, M Helson, Touridomon Issa Some, Jacques Dubois and M Hanocq
Although a series of biomarkers are widely used for the estimation of oxidative damage to biomolecules, validations of the analytical methods have seldom been presented. Formal validation, that is the study of the analytical performances of a method, is however recognized as the best safeguard against the generation and publication of data wit(...)
Mots clés non renseignés
ARTICLE
Extraction, partial purification and characterization of beta-amylase from Gladiolus klattianus
DICKO Mamoudou. H., Searle-van LEEUWEN, HILHORST, R. and TRAORE, A. S.
The bulbs of Gladiolus klattianus are used in Burkina Faso in food processing. Activities of a-amylase and b-amylase were reported within those bulbs for the ®rst time. The puri®cation of the b-amylase involved bu€er extraction, ammonium sulfate precipitation and gel filtration chromatography. The enzyme was puri®ed 47 fold with 75% yield, giv(...)
a-amylase, ,b-amylase, ,Starch, ,Bulb
ARTICLE
Improved kinetic parameter estimation in pH-profile data treatment
I T Some, P Bogaerts, R Hanus, M Hanocq, J Dubois
Statistical problems in temperature stability parameter estimation have been the subject of many papers whereas statistics in, pH-profile parameter estimation have focused little attention. However, the conventional two step method used in data treatment in both cases leads to identical statistical problems. The aim of this study is then to in(...)
Mots clés non renseignés
ARTICLE
Séroprévalence des rickettsioses et de la fièvre Q chez les patients hospitalisés fébriles de Bobo-Dioulasso (Burkina Faso)
Ki-Zerbo G, Tall FR, Nagalo K, Ledru E, Durand G, Patey O.
Objectifs - Les rickettsioses sont répandues et fréquentes dans les pays en développement. Leur place dans la morbidité et la mortalité hospitalières reste cependant mal établie.
Matériels et m6thodes - Dans le but de préciser la place des rickettsioses chez les malades fébriles hospitalises
à Bobo-Dioulasso, une étude prospective a été men(...)
Burkina Faso, Rickettsioses, Fièvre Q
ARTICLE
Bromoenol lactone enhances the permeabilization of rat submandibular acinar cells by P2X7 agonists
E. KABRE
The uptake of ethidium bromide by acini incubated at 37°C in the presence of 1 mM ATP increased
with time and reached after 5 min about 10% of maximal uptake measured in the presence of
digitonin … The response to ATP was dose-dependent (half-maximal concentration around
40 μM) and it was decreased when the temperature was lowered to 25°(...)
Mots clés non renseignés