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Academic literature on the topic 'Plantes – Composition chimique'
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Journal articles on the topic "Plantes – Composition chimique"
DEMARQUILLY, C., and J. ANDRIEU. "Composition chimique, digestibilité et ingestibilité des fourrages européens exploités en vert." INRAE Productions Animales 5, no. 3 (July 29, 1992): 213–21. http://dx.doi.org/10.20870/productions-animales.1992.5.3.4235.
Full textAUMAITRE, L. A. "Les aliments issus de plantes génétiquement modifiées : équivalence, efficacité et sécurité chez les animaux de ferme." INRAE Productions Animales 15, no. 2 (April 12, 2002): 97–108. http://dx.doi.org/10.20870/productions-animales.2002.15.2.3690.
Full textoussou, Kouaméraphaël, djedouxmaxime angaman, jacques ackah, muriel koffi, and nathalie guessennd. "COMPOSITION CHIMIQUE ET EFFETS ANTIBACTERIEN DES HUILES ESSENTIELLES DE TROIS PLANTES AROMATIQUES DE COTE D’IVOIRE." International Journal of Advanced Research 5, no. 11 (November 30, 2017): 626–32. http://dx.doi.org/10.21474/ijar01/5811.
Full textAdebayo, B. J., A. A. Nwani, and A. N. Mafimidiwo. "Evaluation of nutritive value and in vitro digestibility of five selected browse plants as feed for ruminants in Nigeria." Nigerian Journal of Animal Production 50, no. 3 (May 14, 2024): 98–108. http://dx.doi.org/10.51791/njap.v50i3.4032.
Full textOjo, V. O. A., A. A. Lamidi, and A. B. J. Aina. "Influence of age at harvest on the organic nutrients degradability of shrub and tree forage plants by West African dwarf sheep." Nigerian Journal of Animal Production 49, no. 2 (March 8, 2022): 307–16. http://dx.doi.org/10.51791/njap.v49i2.3492.
Full textAdebajo, B. J. "Chemical composition and In Vitro Digestibility of five selected forages used for production and management of small ruminants in Odoragushin of Epe Local Government Area, Lagos State." Nigerian Journal of Animal Production 50, no. 3 (May 14, 2024): 19–23. http://dx.doi.org/10.51791/njap.v50i3.4021.
Full textAkinola, J. A., A. Larbi, J. A. Odedire, O. A. Aderinola, C. A. Lakpini, J. T. Amodu, J. R. Tanko, and A. Musa. "Effects of NPK Fertilizer application and plant density on forage yield and chemical composition of wild sunflower (Tithonia diversifolia)." Nigerian Journal of Animal Production 50, no. 1 (December 6, 2023): 46–60. http://dx.doi.org/10.51791/njap.v50i1.3903.
Full textNebie, Bily, Constantin M. Dabire, Remy K. Bationo, Siaka Sosso, Roger C. H. Nebie, Eloi Pale, and Pierre Duez. "Composition chimique et potentiel antioxydant de l’huile essentielle obtenue par co-distillation de Mentha piperita L. et Cymbopogon citratus (DC.) Stapf du Burkina Faso." International Journal of Biological and Chemical Sciences 17, no. 2 (June 3, 2023): 689–700. http://dx.doi.org/10.4314/ijbcs.v17i2.32.
Full textTremblay, GF, D. Pageau, J. Surprenant, HV Petit, and R. Drapeau. "Effet de la fertilisation azotée et du stade de coupe sur le rendement, la composition chimique et la digestibilité in vitro des céréales plantes entières." Annales de Zootechnie 44, Suppl. 1 (1995): 45. http://dx.doi.org/10.1051/animres:19950515.
Full textNouhoum ALASSANE, Abdoulaye, Kherlifath AMIDOU, Elisabeth Tohouédé ZANNOU, and Sahidou SALIFOU. "Efficacité insecticide in vitro et in vivo de l’huile essentielle de Cymbopogon nardus (Poaceae) sur les poux Menopon gallinae, parasites des volailles." Journal of Animal & Plant Sciences 56, no. 2 (May 31, 2023): 10320–26. http://dx.doi.org/10.35759/janmplsci.v56-2.3.
Full textDissertations / Theses on the topic "Plantes – Composition chimique"
Grougnet, Raphaë͏l. "Etude chimique de plantes endémiques de Nouvelle-Calédonie, Boronella koniambiensis, Rutaceae, Gardenia aubryi, Rubiaceae, étude chimique du périsperme de Sesamum indicum, Pedaliaceae." Paris 5, 2006. http://www.theses.fr/2006PA05P629.
Full textThe chemical study of the aerial parts of Boronella koniambiensis led to the isolation of fifteen compounds from several structural classes, such as lignans, coumarins, steroids, limonoids, amides, and alkaloids. Two of them, cis-1,2-dihydroxy-1,2-dihydromedicosmine and koniamborine, are new natural products, Koniamborine, the first pyrano[3,2-b]indol-4-one alkaloid from natural source, was thoroughly examined by catalytic hydrogenation, in order to establish unambiguously its skeleton and its relationship with 6-methoxy-1-methylisatine, although isolated from the plant material. These investigations confirmed, through the originality and the diversity of its secondary metabolites, the great interest of the Rutaceae family. The chemical study of Gardenia aubryi (Rubiaceae) bud exudate led to the isolation of twelve compounds, nine triterpens and three polymethoxylated flavonoids. Among the triterpens, three seco-cycloartanes and three dammarans are new natural compounds. This is the first report of dammaran-type triterpens in the genus Gardenia. In vitro cytotoxicity evaluation didn’t show any strong activity; this is a good new, as long as this exudate is locally used for chewing, especially by children. Twenty-seven lignans and related compounds have been isolated from sesame perisperm (testa, hull, coat). Four among them are new natural products: (+)-saminol, (+)-episesaminone-9-O-b-D-sophoroside, alibabol and (+)-epipipéritolone. Most of the other compounds were described for the first time in the genus Sesamum. The identification of neolignans should be particularly emphasized on the chemotaxonomic point of view. All these metabolites were rationally integrated to the major lignan biogenetic pathways. As some of them were recently characterized as mammalian lignans precursors, the constitution of a large molecular database from a non-edible part of the plant looks very interesting. On one hand, it is now possible to estimate, by a quick, specific, and sensitive HPLC-analysis, the nature and the concentration of lignans in sesame-containing food preparation. In the other hand, the evaluation of antioxidative and estrogenic activities of this derivates are on progress, in order to determine the basis of the chemopreventive value traditionnaly accorded to sesame
Fahed, Layal. "Diversité chimique et potentiel antimicrobien d’huiles essentielles de plantes libanaises." Thesis, Paris, Muséum national d'histoire naturelle, 2016. http://www.theses.fr/2016MNHN0005/document.
Full textAntimicrobial resistance is a major global problem and a growing concern. The development of new conventional antimicrobial agents replacing inefficient ones is certainly one of the most promising strategies aiming to reduce its extent. But this solution remains unfortunately momentary. In fact, any antimicrobial agent will eventually be defeated by the spread of resistant strains favored by the selection pressure phenomenon exerted by the agent itself. It is therefore necessary to consider all possible alternatives to conventional approaches in order to diversify the antimicrobial arsenal.Essential oils used by plants in their defense against pathogens are naturally composed of a mixture of components making them able to act on several targets of the organism. Thus, even the most resistant pathogens will not be able to escape their actions and the development of resistance will be therefore limited.In this thesis, Lebanese aromatic plants selected based mainly on ethnopharmacological indications were collected from various Lebanese regions. They were subsequently hydrodistillated producing twenty essential oils analyzed by GC / MS and eventually by NMR, and assessed against a range of pathogens that cause skin infections in humans. The analysis of the chemical composition of the EOs was marked by the isolation and characterization for the first time of santolinoïdol, a bisabolene type sesquiterpene that was found in the essential oil of Achillea santolinoides subsp. wilhelmsii. Almost half of the EOs have been active on at least one pathogen. The origin of the activity of the most active oils, the effect of their associations with commercial antimicrobials and their cytotoxicities were also investigated
Crespin, Fabienne. "Contribution à l'étude des saponosides de l'Opilia Celtidifolia Guill. Per." Aix-Marseille 3, 1992. http://www.theses.fr/1992AIX30005.
Full textÉparvier, Véronique. "Études chimique et biologique de plantes tropicales : Disepalum plagioneurum et Richella obtusata (Annonaceae), Argophyllum nitidum (Escalloniaceae), et Pittosporum pancheri (Pittosporaceae) : Isolement, analyse structurale et essais biologiques." Paris, Muséum national d'histoire naturelle, 2005. http://www.theses.fr/2005MNHN0044.
Full textIn the search for new active compounds, chemical study of four tropical plants has been investigated: two cytotoxic Annonaceae (Disepalum plagioneurum and Richella obtustata), one Escalloniaceae, which inhibit acetylcholinesterase (Argophyllum nitidum) and one Pittosporaceae which is a MCH1 inhibitor (Pittosporum pancheri). Bioguided fractionation of these plants and chemical transformation of some isolated molecules led to the structural determination of 17 compounds (13 are new). Acetogenins and one styryl-lactone have been isolated from Annonaceae, dipeptides from Argophyllum nitidum and farnesyled glycosides from Pittosporum pancheri. Biological evaluation of isolated compounds have been investigated. Most of these compounds are responsible of the initial activity observed. Structure-activity relationships have also been studied
Nguikwie, Kwanga Mekondane Sylvie. "Huiles essentielles d'espèces d'Aframomum camerounaises : composition chimique et activités antibactériennes." Thesis, Montpellier 2, 2011. http://www.theses.fr/2011MON20217.
Full textThe antimicrobial properties of plant volatile oils have been assessed and there appears to be a revival in the use of traditional approaches to protecting livestock and food in industrial countries. This work is the result of combined chemical and biological studies of essential oils obtained from 15 Cameroonian aromatic species of the genus Aframomum (Zingiberaceae), commonly used as spices or as ingredients in traditional medicine.The volatile extracts were obtained by hydrodistillation of leaves, seeds, pericarps and rhizomes of representative samples of these 15 Aframomum species collected in different geographical zones of Cameroon; their chemical analysis was performed by gas chromatography (GC/FID), by gas chromatography coupled with mass spectrometry (GC/MS) and chiral chromatography to assess the enantiomeric distribution of some characteristic components (113 samples of essential oils were analyzed in the total).The antimicrobial activities of 41 volatile extracts and of their main components, after isolation and characterization, were tested against two bacteria: Escherichia coli (Gram-) and Micrococcus luteus (Gram +) by a broth dilution technique; the results show a higher efficiency of oxygenated compounds such as linalol, geraniol, myrtenol or (E)-nerolidol, with possible synergistic interactions between components in essential oils.Globally, the seed essential oils are the most efficient, in particular those extracted from: A. citratum, A. dalzielii, A. letestuianum, A. pruinosum and A. polyanthum, justifying their traditional use in food as well as in medicinal preparations or their potential application as natural preservatives in the cosmetic, food or pharmaceutical industries
Verin, Pierre. "Etude chimique des constituants volatils de plantes aromatiques du Brésil." Montpellier 2, 1996. http://www.theses.fr/1996MON20093.
Full textAttioua, Barthélemy. "Contribution à l'étude phytochimique des feuilles et des tiges de Croton Lobatus." Université Louis Pasteur (Strasbourg) (1971-2008), 2005. http://www.theses.fr/2005STR13023.
Full textCroton lobatus belongs to the Croton genus (Euphorbiaceae). It is commonly used in traditional medicine for drugs. In order to isolate molecules having physiological properties, five different extracts of grounded leaves and stems have been investigated. The following fractions of each extract using chromatography on silica gel followed by recrystallization have allowed to isolate and purify nineteen different compounds. Chemical elucidation tests have led to the identification of each compound. In each case, the complete structure relying on different analytical methods, for instance: NMR, mass spectra, IR and UV spectra, elementary analysis, melting point and polarimetry was established. Among the identified compounds, one may found steroids, nitrogen compounds, amphiphiles, one triterpene, one triglyceride, fatty acids, one aromatic compound and one hydrocarbon
Gazanhes-Melas, Valérie. "Sous-unités glutenines de faible poids moléculaire du blé tendre : varaibilité génétique, caractérisation biochimique, relation avec la qualité technologique." Montpellier 2, 1994. http://www.theses.fr/1994MON20096.
Full textTaoubi, Khalil. "Les esters hétérosidiques de l'acide cafeique chez des verbenaceae. Phytochimie, chimiotaxonomie, activités biologiques." Toulouse, INPT, 1992. http://www.theses.fr/1992INPT069G.
Full textMolangui, Thérèse. "Etude chimique des huiles essentielles de plantes aromatiques introduites en Afrique subsaharienne." Montpellier 2, 1997. http://www.theses.fr/1997MON20016.
Full textBooks on the topic "Plantes – Composition chimique"
1907-, Pirie N. W., ed. Leaf protein and its by-products in human and animal nutrition. 2nd ed. Cambridge [Cambridgeshire]: Cambridge University Press, 1987.
Find full textKanzila, Muzinga. Determination de la composition chimique des fourrages par la spectrométrie dans le proche infrarouge (SPIR): (cas des fourrages des hautes altitudes du Rwanda) : intérêt de la technique. Gitega, République du Burundi: Institut de recherche agronomique et zootechnique de la C.E.P.G.L., 1993.
Find full textF, Seaman, ed. Diterpenes of flowering plants: Compositae (Asteraceae). New York: Springer-Verlag, 1990.
Find full text1941-, Seidl Peter Rudolf, Gottlieb Otto Richard, Kaplan Maria Auxiliadora C, and Associação Brasileira de Química, eds. Chemistry of the Amazon: Biodiversity, natural products, and environmental issues. Washington, DC: American Chemical Society, 1995.
Find full textVivian, Cody, ed. Plant flavonoids in biology and medicine II: Biochemical, cellular, and medicinal properties : proceedings of a Meeting on Plant Flavonoids in Biology and Medicine held in Strasbourg, France, August 31-September 3, 1987. New York: Liss, 1988.
Find full textOntario. Esquisse de cours 12e année: Chimie sch4c cours précollégial. Vanier, Ont: CFORP, 2002.
Find full textOntario. Esquisse de cours 12e année: Chimie sch4 cours préuniversitaire. Vanier, Ont: CFORP, 2002.
Find full textOntario. Esquisse de cours 12e année: Sciences de l'activité physique pse4u cours préuniversitaire. Vanier, Ont: CFORP, 2002.
Find full textOntario. Esquisse de cours 12e année: Technologie de l'information en affaires btx4e cours préemploi. Vanier, Ont: CFORP, 2002.
Find full textOntario. Esquisse de cours 12e année: Études informatiques ics4m cours préuniversitaire. Vanier, Ont: CFORP, 2002.
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