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Search Results: 1 - 10 of 300114 matches for " Roland N.T. Meda "
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Polyphenol Content and Antioxidant Activity of Fourteen Wild Edible Fruits from Burkina Faso
Aline Lamien-Meda,Charles Euloge Lamien,Moussa M.Y. Compaoré,Roland N.T. Meda,Martin Kiendrebeogo,Boukare Zeba,Jeanne F. Millogo,Odile G. Nacoulma
Molecules , 2008, DOI: 10.3390/molecules13030581
Abstract: A total of fourteen (14) species of wild edible fruits from Burkina Faso wereanalyzed for their phenolic and flavonoid contents, and their antioxidant activities usingthe DPPH, FRAP and ABTS methods. The data obtained show that the total phenolic andtotal flavonoid levels were significantly higher in the acetone than in the methanol extracts.Detarium microcarpum fruit had the highest phenolic and the highest flavonoid content,followed by that of Adansonia digitata, Ziziphus mauritiana, Ximenia americana andLannea microcarpa. Significant amounts of total phenolics were also detected in the otherfruit species in the following order of decreasing levels: Tamarindus indica > Sclerocaryabirrea > Dialium guineense > Gardenia erubescens > Diospyros mespiliformis > Parkiabiglobosa > Ficus sycomorus > Vitellaria paradoxa. Detarium microcarpum fruit alsoshowed the highest antioxidant activity using the three antioxidant assays. Fruits with highantioxidant activities were also found to possess high phenolic and flavonoid contents.There was a strong correlation between total phenolic and flavonoid levels and antioxidantactivities.
In vitro Antioxidant, Xanthine Oxidase and Acetylcholinesterase Inhibitory Activities of Balanites aegyptiaca (L.) Del. (Balanitaceae)
N.T.R. Meda,A. Lamien-Meda,M. Kiendrebeogo,C.E. Lamien
Pakistan Journal of Biological Sciences , 2010,
Abstract: The present study aimed to test the validity of Balanites aegyptiaca remedies used for the treatment of rheumatisms and mental disorders by examining the antioxidant, xanthine oxidase and acetylcholinesterase inhibitory activities of galls and leaves extracts and fractions. The total phenolics and flavonoids were measured using Folin-Ciocalteu and AlCl3 reagents, respectively. Two methods i.e., FRAP and ABTS were used to estimate the total antioxidant capacity of the plant materials. The FRAP and ABTS antioxidant activities showed that among all extracts and fractions tested, the best antioxidant activities were found with the galls dichloromethane and the leaves ethyl acetate fractions. The antioxidant activities did correlated significantly with the total phenolic and flavonoid contents. The study also showed that B. aegyptiaca galls and leaves fractions exhibited a moderate xanthine oxidase inhibitory activity comparatively to the acetylcholinesterase which was weakly inhibited by the tested extracts and fractions.
In vitro Antioxidant, Lipoxygenase and Xanthine Oxidase Inhibitory Activities of Fractions from Cienfuegosia digitata Cav., Sida alba L. and Sida acuta Burn f. (Malvaceae)
K. Konate,A. Souza,A.Y. Coulibaly,N.T.R. Meda
Pakistan Journal of Biological Sciences , 2010,
Abstract: In this study polyphenol content, antioxidant activity, lipoxygenase (LOX) and Xanthine Oxidase (XO) inhibitory effects of n-hexane, dichloromethane, ethyl acetate and n-butanol fractions of aqueous acetone extracts from S. alba L., S. acuta Burn f. and Cienfuegosia digitata Cav. were investigated. The total phenolics, flavonoids, flavonols and total tannins were determined by spectrophotometric methods using Folin-ciocalteu, AlCl3 reagents and tannic acid, respectively. The antioxidant potential was evaluated using three methods: inhibition of free radical 2,2-diphenyl-1-picrylhydramzyl (DPPH), ABTS radical cation decolorization assay and Iron (III) to iron (II) reduction activity (FRAP). For enzymatic activity, lipoxygenase and xanthine oxidase inhibitory activities were used. This study shows a relationship between polyphenol contents, antioxidant and enzymatic activities. Present results showed that ethyl acetate and dichloromethane fractions elicit the highest polyphenol content, antioxidant and enzymatic activities.
A Fuzzy Clustering Approach to Filter Spam E-Mail
N.T. Mohammad
Lecture Notes in Engineering and Computer Science , 2011,
Creative poetry workshop as a means to develop creativity and provide psychological security of a teacher
N.T. Oganesyan
Psihologi?eskaa Nauka i Obrazovanie , 2013,
Abstract: A creative approach to the implementation of the Federal state standard of general education implies a supportive psychologically safe learning environment, professional readiness of educators to teaching, expressed in creativity, emotional stability, as well as reflection. The teachers’ creativity and psychological stability level can be improved by the use of certain forms of work: training and creative poetry workshops. The results of the author's research suggest that participation in the poetry workshops stimulates reflection, increases stress resistance and creativity of teachers. Our approach allows us to consider the problem of stimulating the development of teachers’ personality as members of creative poetic process in theoretical and practice oriented perspective.
On the trail of John Calvin’s philosophy of language: a few notes on his commentary on Genesis 10 and 11
N.T der Merwe
Acta Theologica , 2004,
Abstract: This essay attempts to discover John Calvin’s view on the nature and use of human language. It suggests a strategy for establishing a few building blocks of his philosophy of language. For this purpose Calvin’s Commentary on Genesis is analysed and commented on. Seven items to be incorporated in the structure are found to be important but inadequate. As a follow-up the author refers to the contemporary paradigm shift of linking the philosophy of language to contextual studies, pragmatics, rhetoric, ethics and hermeneutics.
Geskrifte van N.T. van der Merwe
N.T. van der Merwe
Koers : Bulletin for Christian Scholarship , 2006, DOI: 10.4102/koers.v71i1.225
Curriculum vitae: Van der Merwe, N.T.
N.T. van der Merwe
Koers : Bulletin for Christian Scholarship , 2006, DOI: 10.4102/koers.v71i1.224
Paradigm, science and society
N.T. van der Merwe
Koers : Bulletin for Christian Scholarship , 1975, DOI: 10.4102/koers.v40i4-6.847
Abstract: The subject of my contribution to the Taljaard Festschrift is focused on a cardinal aspect of the contemporary discussion in the area of theory of science, namely the relationship between science and society', and in this connection especially the role ascribed by certain scholars to paradigms in the practice of science. Because of its bridge function, the first task will be a global getting acquainted with some characteristic accents in contemporary theory of science. If this is successful, it can hopefully open up avenues for a view of the relationship of the remaining two components of the above mentioned subject.
Comparative Study of Thigh Muscles and Bones Conformation and Some Carcass Traits of Local vs. Imported Turkey Strain
N.T. Taha,M.T. Farran
International Journal of Poultry Science , 2009,
Abstract: Four males and four females of each of imported BUT-9 and local strain of turkey were slaughtered at marketing age, to study live body weight, som carcass traits, in addition to drumstick’s bones at Tibia region “Nazarian bones2” which radiography and chemically analyzed for fat-free bone parameters. The results indicated that BUT-9 revealed higher (p<0.05) live body weight, ready to cook carcass weight percent (dressing percent), breast weight and percent, left drum-stick weight and percent as compared with local strain of turkey. BUT-9 strain also significantly (p<0.05) had more number of drum-stick’s muscles, tibia weight and width, drum-stick’s thickness and width and drum-stick’s bones percent. However, local strain had significantly (p<0.05) more drumsticks bones “Nazarian bones” while BUT-9 had no Nazarian bones in their drum-stick’s muscles. Males had more (p<0.05) live body weight, neck, drum-stick’s width, length and tibia length, breast weight, width and depth and shank weight as a percent of live body weight. As compared with fibula there were no significant differences between those bones and fibula for dry matter, phosphorus and magnesium percents, while a significant (p<0.05) differences were noticed for ash and calcium. But fat percent didn’t show any significant differences between Nazarian bones themselves but were noticed with fibula. Sex had no significant effect on bone parameters except for males turkey bones which had more (p<0.05) dry matter than females.
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