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Статті в журналах з теми "Fractions phénoliques":
Monties, Bernard. "Composition chimique des bois de chêne: composés phénoliques, relations avec quelques propriétés physiques et chimiques susceptibles d'influencer la qualité des vins et des eaux-de-vie." OENO One 21, no. 3 (September 30, 1987): 169. http://dx.doi.org/10.20870/oeno-one.1987.21.3.1282.
Chatonnet, Pascal, Jean-Noël Boidron, Denis Dubourdieu, and Alexandre Pons. "Evolution des composés polyphénoliques du bois de chêne au cours de son séchage. Premiers résultats." OENO One 28, no. 4 (December 31, 1994): 337. http://dx.doi.org/10.20870/oeno-one.1994.28.4.1135.
Filledier, J., and P. Mérot. "Etude de l'attractivité de solutions isolées par fractionnement de l'urine de bovin Baoulé pour <em>Glossina tachinoides </em> Westwood, 1850 au Burkina Faso." Revue d’élevage et de médecine vétérinaire des pays tropicaux 42, no. 3 (March 1, 1989): 453–55. http://dx.doi.org/10.19182/remvt.8813.
Baldi, Alessandro, Annalisa Romani, Nadia Mulinacci, and Franco Francesco Vincieri. "Composés phénoliques dans les cépages de toscane de Vitis vinifera L." OENO One 27, no. 3 (September 30, 1993): 201. http://dx.doi.org/10.20870/oeno-one.1993.27.3.1164.
Boidron, Jean-Noël, Pascal Chatonnet, and Monique Pons. "Influence du bois sur certaines substances odorantes des vins." OENO One 22, no. 4 (December 31, 1988): 275. http://dx.doi.org/10.20870/oeno-one.1988.22.4.1263.
Goumbri, Bertrand W. F., Olivia Jansen, Roland D. Marini, Michel Frederich, Rasmané Semdé, Touridomon Issa Somé, Sabine Danthine, and Ange Mouithys-Mickalad. "Effet antioxydant et capacité quenching de l’oxygène singulet du beurre de karité et de sa fraction phénolique." Journal Africain de Technologie Pharmaceutique et Biopharmacie (JATPB) 2, no. 3 (December 20, 2023). http://dx.doi.org/10.57220/jatpb.v2i3.114.
Vanessa, Soppo Lobe Charlotte, Moïse Henri Julien Nko’o, Foumane Maniepi Ngoupiho Jacqueline Saurelle, Benga Mekoulou Félicité, Ndongo Martin Nyangono, Minyem Ngombi Aude Perine, Emanda Ekoudi Martin, Toukam Michel, Nnanga Nga, and Ze Minkande Jacqueline. "Composition chimique et activité antimicrobienne sur des souches responsables d’infections cutanées de l’extrait méthanoïque d’écorces de Vernonia conferta (Asteraceae)." Journal Africain de Technologie Pharmaceutique et Biopharmacie (JATPB) 2, no. 3 (December 20, 2023). http://dx.doi.org/10.57220/jatpb.v2i3.111.
Metlef, S., A. Delmi-Bouras, A. Zidane, and M. Benali. "Activités antibactériennes des constituants de la fraction insaponifiable de l’huile d’olive." Phytothérapie, 2021. http://dx.doi.org/10.3166/phyto-2021-0250.
Sene, Madieve, Ousmane Diaw, Mamadou Ndiaye, Abdou Sarr, Firmin Sylva Barboza, Awa Ndiaye-Sy, and Guata Yoro Sy. "Activité cicatrisante in-vivo d’une pommade à base de vaseline et d’une fraction méthanolique de feuilles d’Elaeis guineensis sur un modèle de brûlure du second degré profond chez le rat." Journal Africain de Technologie Pharmaceutique et Biopharmacie (JATPB) 2, no. 3 (December 20, 2023). http://dx.doi.org/10.57220/jatpb.v2i3.141.
Дисертації з теми "Fractions phénoliques":
Le, Thi Tuong. "Purification et propriétés anti-inflammatoires et anti-oxydantes des fractions phénoliques issues de coproduits de production d'isolats protéiques d'oleoproteagineux." Electronic Thesis or Diss., Université de Lorraine, 2021. http://www.theses.fr/2021LORR0270.
Rapeseed and sunflower are the most cultivated oilseed plants in Europe in general, and in France in particular. Some industrialists are currently focusing on the development of industrial processes for the extraction/purification of proteins from the oil cakes of these two plants. These processes generate co-products which are saline aqueous effluents rich in phenolic compounds such as cholorgenic acid (CGA, for sunflower) and sinapine (SP, for rapeseed). The capture of these phenolic compounds, which can act as natural antioxidants and/or anti-inflammatory agents in nutrition and health, is therefore a promising way of valorization. The main objectives of this work were: 1) to characterize and identify the phenolic compounds of protein isolate by-products from SFM and RSM; 2) to select the best macroporous resins and to study the adsorption mechanism of phenolic compounds; 3) to optimize the conditions in the phenolic compounds adsorption column; and 4) to evaluate the biological activities of the obtained phenolic fractions, especially the antioxidant and anti-inflammatory properties.By different analytical methods, we determined that the liquid effluents consisted of phenolic compounds, amino acids, carbohydrates, and salt, which have a low molecular weight and can easily pass through a UF/DF membrane. All phenolic compounds were identified by HPLC and HPLC-ESI-MS analysis in comparison with standards. CGA is the main phenolic compound in the sunflower effluent. The main phenolic compound of rapeseed effluents is MS. Unlike sunflower, they also contain many other minor compounds. The adsorption/desorption of sunflower and rapeseed phenolic compounds was evaluated using different macroporous resins including XAD4, XAD7, XAD16, XAD1180 and HP20. We found that all phenolic compounds adsorbed readily onto the resins. XAD7 and XAD16 resins showed the best adsorption/desorption properties in sunflower and rapeseed liquid effluents, respectively. The results showed that the adsorption of all phenolic compounds follows a Langmuir model. According to the determined thermodynamic parameters, the adsorption process, is in all cases physical and is exothermic.The optimal condition for column adsorption was determined on the selected resins by experimental planning and multicriteria optimization. A multicriteria optimization methodology based on design of experiments showed the optimal conditions were adsorption flow rate of 15 BV/h at pH 2.7 for CGA from SFM. Meanwhile, adsorption flow rate of 13.3 BV/h and at pH ranging from 2 to 5 were the optimal conditions for sinapine from RSM. Ethanol solutions 50% (v/v) for chlorogenic acid, 70% (v/v) for sinapine were used for desorption.These approaches successfully produced the phenolic fractions for biological activities such as antioxidation and anti-inflammation. Phenolic fraction showed a higher antioxidant capacity than vitamin C in DPPH and ABTS assays (IC50/phenolic fractions < IC50 vitamin C, p < 0.05. In addition, it was discussed whether the phenolic fractions obtained in this project also showed an inflammatory effect. The sunflower fraction (CGA) effectively inhibited the production of TNF-α, which is a pro-inflammatory marker when a sample is treated with LPS. However, the rapeseed fractions were not effective against proinflammatory mediators. None of the fractions showed cytotoxicity
Yousfi, Mohammed. "Etude des fractions lipidique et phénolique du pistachier de l'Atlas (Pistacia Atlantica), de la gale et du champignon inonotus hispidus associés." Aix-Marseille 3, 2006. http://www.theses.fr/2006AIX30027.
The chemical study of the lipidic and phenolic fractions of Pistacia atlanlica tree has been investigated. Except for the acid value, the physical and chemical examinations of the fruit oil are in agreement with most vegetable oils. The main fatty acids of the fruit oil were oleic, palmitic and linoleic. Triacylglycerols were analyzed by HPLC and the main species oftriacylglycerols were identified and quantified. The nature of fatty acids in the Sn-2 and Sn-1+3 glycerol positions have been determined by enzymatic hydrolysis using porcine pancreatic lipase. The Sn-2 position is occupied by the unsaturated fatty acids (oleic and linoleic). The main constituents of unsaponifiable matter have been analyzed. Qualitative and quantitative determination of tocopherols was carried out. The relative percentages of the sterolic compounds have been determined by gas chromatography and their structures identified by GC-MS. The quantification of the total phenolic compounds and flavonoids indicated that the different parts of the tree are rich in natural phenolic compounds. The antioxidant tests showed that the phenolic extracts have a strong antioxidant activity. The positive correlation between the TEAC and the amount of phenolic compounds confirms the contribution of the phenolic compounds to the antioxidant activity. Eleven phenolic compounds (gallic acid, gallic acid methyl ester, chlorogenic acid, luteoline, luteoline 7-glycoside, kampferol, naringine and naringine 7-glycoside, hispidine, hispolone and its methoxylated derivative) were isolated from leaves, fruits, gall and mushroom and characterized by NMR and MS. The results show that this tree is a promising source in natural phenolic products with very important antioxidant activities which justify the use of the various parts of the tree in traditional medicine