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Journal articles on the topic 'Purification par extraction liquide'

Author: Grafiati

Published: 11 January 2025

Last updated: 31 July 2025

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1

Donafologo Baba, SORO, NGUETTIA Kossonou Roland, DIARRA Moussa, et al. "NIVEAU DE CONTAMINATION DE LA CHAIR DE POULET BICYCLETTE (GALLUS GALLUS DOMESTICUS) PAR LES HYDROCARBURES AROMATIQUES POLYCYCLIQUES (HAP)." International Journal of Advanced Research 10, no. 10 (2022): 802–7. http://dx.doi.org/10.21474/ijar01/15548.

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Polycyclic aromatic hydrocarbons (PAHs) are among the organic pollutants sought both in the various environmental compartments (water, soil, air, etc.) and in food intended for human consumption. They are a group of persistent organic pollutants that are potentially mutagenic and carcinogenic. Thus, the present study aims to determine the PAH levels in the flesh of local poultry also called bicycle chickens (gallus gallusdomesticus). Ten (10) composite samples of chickens were collected in Karakoro, a locality located in the department of Korhogo in the north of Cote dIvoire. After the extract

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S., Sasikumar and K. Sivakumar. "COMPARATIVE STUDIES OF DIFFERENT DNA EXTRACTION METHODS FOR PCR – BASED ASSAY IN ARACHIS HYPOGAEA ( L. )." INDO AMERICAN JOURNAL OF PHARMACEUTICAL SCIENCES 04, no. 12 (2017): 4972–78. https://doi.org/10.5281/zenodo.1297548.

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High quality DNA extractions are a prerequisite for genetic studies for a variety of plants including Arachis hypogea (L.) Nowadays, there are great number of plant DNA extraction method and commercially available extraction kit are also becoming more and more popular. It appears that different procedures work best for different plant groups. Thus in the genetic studies of A.hypogea, choosing CTAB method to choose becomes a concern. The DNA extracted by this method from (Control and Seaweed Liquid Fertilizer (SLF) treated fresh young leaf tissue of A.hypogea was analysed according to their cos

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Amel Aidi and Djamel Barkat. "Extraction liquide-liquide du cobalt(II) par la N-(2-hydroxybenzylidene) aniline." Journal of Applied Engineering Science & Technology 4, no. 1 (2018): 6. http://dx.doi.org/10.69717/jaest.v4.i1.66.

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The liquid–liquid extraction of cobalt(II) from sulfate medium with N-(2- hydroxybenzylidene)aniline is studied with the following parameters: pH, concentration of the extractant and the nature of diluent. The solvent extraction of cobalt(II) in different diluents leads to third phase formation. The stoichiometry coefficients of the extracted complexes are determined by the slope analysis method. The extaction constants are evaluated for the different diluents. The extraction is better in the following order: cyclohexane > toluene > chloroform.

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Sabba, Nassila, Omar Arous, and Djamel Eddine Akretche. "Extraction du plomb (II) par des membranes polymères à inclusion en utilisant l’Aliquat 336 comme transporteur." Revue des sciences de l’eau 26, no. 2 (2013): 107–17. http://dx.doi.org/10.7202/1016062ar.

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Résumé Au cours de ce travail, nous avons étudié l’extraction liquide - liquide et le transport du plomb à travers des membranes polymériques en utilisant le chlorure de tricapryle ammonium (Aliquat 336) comme transporteur. L’extraction du plomb par Aliquat 336 nous a permis de mettre au point les conditions optimales d’extraction et de déterminer les rendements d’extraction. Les expériences d’extraction liquide - liquide ont montré qu’un maximum de rendement était obtenu après huit minutes d’agitation à une vitesse de 2 400 (rpm). Les pourcentages d’extraction obtenus varient entre 80 à 94 %

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Aricò, Fabio, Sara Bravo, Marco Crisma, and Pietro Tundo. "1,3-Oxazinan-2-ones via carbonate chemistry: a facile, high yielding synthetic approach." Pure and Applied Chemistry 88, no. 3 (2016): 227–37. http://dx.doi.org/10.1515/pac-2015-1004.

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AbstractA high yielding synthesis of 1,3-oxazinan-2-ones starting from 3-amino-1-propanols and ethylene carbonate (EC) in the presence of catalytic amount of triazabicyclodecene (TBD) is herein reported. The formation of six-membered cyclic carbonates was achieved by intermolecular cyclization reaction via double BAc2 mechanism. Cyclization reactions have been carried out in neat as EC acted both as solvent and reagent. Pure 1,3-oxazinan-2-ones were isolated in high yield by simple liquid-liquid extraction. Further purification can be achieved by recrystallization. The reaction resulted of gen

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Seyd, Abdelkader Hadj, and Touhami Lanez. "Effet du Ph Sur le Rendement de Récupération des Acides Carboxyliques par Extraction Liquide - Liquide à Partir des Effluents Aqueux." حوليات العلوم و التكنولوجيا 5, no. 1 (2013): 6–17. http://dx.doi.org/10.12816/0010595.

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BODIN, Clara, Roxane CHÊNE, Annie MARION, Léa SOUVIGNET, Aurélie CORTÉJADE, and Mickaël NICOLAS. "Développement et validation d’une méthode de quantification de 25 composés perfluorés dans les eaux usées." TSM 12 2023, TSM 12 2023 (December 20, 2023): 143–63. http://dx.doi.org/10.36904/tsm/202312143.

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Suite à la détection de quantités importantes de composés perfluorés dans des prélèvements d’air, de sol, d’eau ainsi que de lait maternel, deux arrêtés préfectoraux de la préfecture du Rhône, datant de mai 2022, ont défini les limites de quantification de ces contaminants environnementaux à 10 ng/L dans les eaux usées. Ces composés très persistants et considérés comme des perturbateurs endocriniens peuvent avoir des effets non négligeables sur la santé humaine. La nécessité de développer de nouveaux outils de détection et de quantification de ces molécules dans les eaux de rejets est donc urg

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Perdrix, C., G. Gioanni, A. Delest, and P. Constantopoulos. "Embolie de liquide amniotique rapidement fatale. Extraction par césarienne d'un enfant vivant sans séquelles neurologiques." Annales Françaises d'Anesthésie et de Réanimation 23, no. 9 (2004): 912–16. http://dx.doi.org/10.1016/j.annfar.2004.04.019.

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9

Diallo, Tidiane, and Et Al. "Identification et dosage du Deltaméthrine dans les moustiquaires imprégnées d’insecticide par la Chromatographie Liquide à Haute Performance au Laboratoire national de la santé à Bamako." Revue Malienne d'Infectiologie et de Microbiologie 16, no. 3 (2022): 59–64. http://dx.doi.org/10.53597/remim.v16i3.2033.

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Objectif : Contribuer au contrôle de qualité des moustiquaires imprégnées d’insecticides par la technique de la Chromatographie liquide à haute performance pour assurer leur efficacité dans la prévention du paludisme au Mali. Matériel et Méthodes : les échantillons étaient constitués de moustiquaires achetées ou obtenues gratuitement. L’échantillonnage a consisté à une coupure aléatoire de petits morceaux sur les cinq côtés de la moustiquaire puis une coupure d’un carré modèle de 10*10 cm. Au total quatre moustiquaires ont fait l’objet d’analyse. Le matériel utilisé pour l’analyse des mo

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Roggero, Jean-Pierre, and Paul Archier. "Mise au point d'une méthode de dosage des phénols simples des vins. Application à des vins d'origines et d'âges différents." OENO One 23, no. 1 (1989): 25. http://dx.doi.org/10.20870/oeno-one.1989.23.1.1731.

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<p style="text-align: justify;">Un certain nombre de composés phénoliques simples des vins peuvent être détectés et quantifiés par chromatographie liquide à haute performance sans extraction préalable. Les résultats enregistrés sur des vins jeunes montrent en particulier que lors des six premiers mois les teneurs en acides gallique et en catéchlne augmentent, alors que celle en tyrosol diminue. En ce qui concerne les acides hydroxycinnamoyl-tartriques, on observe souvent un enrichissement, mais ceci affecte peu les teneurs en acides hydroxycinnamiques totaux.</p><p style="text-a

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Ginolhac, Sophie, Mustapha Moulsma, Gisèle Lardet, and Jean-Jacques Vallon. "Développement d'une méthode de dépistage toxicologique large par HPLC/DAD : comparaison de trois méthodes d'extraction du sérum, extraction liquide-liquide et extractions solide-liquide (Bond Elut Certify®et OASIS®MCX)." Annales de Toxicologie Analytique 13, no. 2 (2001): 94–103. http://dx.doi.org/10.1051/ata/2001008.

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Mahmoudi, Nagissa, Greg F. Slater, and Roberta R. Fulthorpe. "Comparison of commercial DNA extraction kits for isolation and purification of bacterial and eukaryotic DNA from PAH-contaminated soils." Canadian Journal of Microbiology 57, no. 8 (2011): 623–28. http://dx.doi.org/10.1139/w11-049.

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Molecular characterization of the microbial populations of soils and sediments contaminated with polycyclic aromatic hydrocarbons (PAHs) is often a first step in assessing intrinsic biodegradation potential. However, soils are problematic for molecular analysis owing to the presence of organic matter, such as humic acids. Furthermore, the presence of contaminants, such as PAHs, can cause further challenges to DNA extraction, quantification, and amplification. The goal of our study was to compare the effectiveness of four commercial soil DNA extraction kits (UltraClean Soil DNA Isolation kit, P

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Chaibou Yacouba, Abdoul-Rachid, Salmana Laouli Ibrahim, Ousmaila Sanda Mamane, Moustapha Mohamed, and Ibrahim Natatou. "Extraction liquide-liquide de l’uranium et de quelques métaux restrictifs issus des jus uranifères de la République du Niger par l’acide di-2-éthylhexylphosphorique et l’oxyde de trioctylphosphine." International Journal of Biological and Chemical Sciences 12, no. 5 (2019): 2424. http://dx.doi.org/10.4314/ijbcs.v12i5.39.

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Bolte, Jean, Colette Demuynck, and Georges Jeminet. "Sélectivité du transport de Ca2+/Mg2+ à travers une membrane liquide par A•23187 (calcimycine) et son dérivé N-méthyle." Canadian Journal of Chemistry 63, no. 12 (1985): 3478–81. http://dx.doi.org/10.1139/v85-570.

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Operating in a cell of water/CHCl3/water, it is shown that there is a preferential transport of Ca2+/Mg2+ by A.23187. On the basis of measurements of flux of extraction and of flux of liberation in a half-cell of water/CHCl3, it is shown that the selectivity of the transport is related to the kinetics of liberation, which is markedly different for the two ions and which could be explained by the structure of the complex dimers that are formed, according to the corresponding crystallographic studies. The methylation of the —NHCH3 entails an inversion of the selectivity in the transport

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Techasakul, Supanna, Nitirat Chimnoi, Nisachon Khunnawutm, Pitchayada Feungfuloy, and Kittima Chatrewong. "Facile Isolation and Purification of Thailandine, a Biologically Active Oxoaporphine Alkaloid, from Stephania venosa Leaves using Ion-pair Liquid-liquid Extraction." Research Journal of Medicinal Plant 7, no. 1 (2013): 68–76. http://dx.doi.org/10.3923/rjmp.2013.68.76.

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Conchione, Chiara, Silvia Socal, Laura Barp, and Sabrina Moret. "Evaluation of Polycyclic Aromatic Hydrocarbons (PAHs) in Pork Meat Cooked with Two Different Methods." Molecules 30, no. 9 (2025): 1886. https://doi.org/10.3390/molecules30091886.

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During domestic grilling, polycyclic aromatic hydrocarbons (PAHs), which include genotoxic and carcinogenic compounds, can be produced as a result of fat pyrolysis, leakage of cellular juices onto the heat source, and incomplete combustion of fuel. This study aimed to assess the formation of PAHs in pork neck cooked using two different grilling methods (traditional flat grill with beech charcoal and asado grill with beech wood flame) under controlled conditions, with cooking stopping at a core temperature of 72 °C. The impact of marinating and cooking speed (fast or slow) was also evaluated ov

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Etievant, Patrick X. "Mise au point sur les techniques d'extraction et de séparation des constituants volatils du vin." OENO One 21, no. 4 (1987): 247. http://dx.doi.org/10.20870/oeno-one.1987.21.4.1287.

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<p style="text-align: justify;">Les différentes techniques d'extraction et de séparation des constituants de l'arôme des vins sont décrites et leurs avantages, inconvénients et domaines d'application mis en évidence.</p><p style="text-align: justify;">Les techniques d'extraction mettant en jeu un solvant en phase liquide ou supercritique, une distillation ou une concentration de l'espace de tête sont successivement étudiées. En ce qui concerne les séparations des constituants des extraits, l'accent est mis sur le type de phases à utiliser en CPV et sur les techniques de préfr

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Barp, Laura, Sabrina Moret, and Giorgia Purcaro. "Monitoring and Occurrence of Heavy PAHs in Pomace Oil Supply Chain Using a Double-Step Solid-Phase Purification and HPLC-FLD Determination." Foods 11, no. 18 (2022): 2737. http://dx.doi.org/10.3390/foods11182737.

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Polycyclic aromatic hydrocarbons (PAHs) are ubiquitous environmental and processing contaminants generated by both spontaneous and anthropogenic incomplete combustion processes of organic matter. Contamination of PAHs in vegetable oils can result from several factors and processes, including environmental contamination, oil processing, and migration from food contact materials. The determination of PAHs in edible oil presents a challenge because of the complexity of the matrix. Since PAHs are present at lower levels than triglycerides, it is necessary to isolate the compounds of interest from

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Cun, Christine, Jean-Michel Ollivier, Sophie Macia, and Jean Danjou. "Dosage de pesticides organophosphorés dans les eaux de distribution par injection large volume associée à un couplage GC/MS après extraction liquide-solide." Cahiers de l'Association Scientifique Européenne pour l'Eau et la Santé 8, no. 1 (2003): 3–9. http://dx.doi.org/10.1051/asees/20030801003.

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Bazus, Léa, Nicolas Cimetiere, Laurent Legentil, Guy Randon, and Dominique Wolbert. "Recherche de dérivés conjugués de médicaments dans l’eau de surface et en cours de potabilisation." Revue des sciences de l’eau 28, no. 1 (2015): 19–25. http://dx.doi.org/10.7202/1030003ar.

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Les médicaments à usage humain ou vétérinaire se retrouvent, par différents moyens, dans les milieux aquatiques et notamment dans les filières de potabilisation des eaux. Les médicaments sont en partie métabolisés après ingestion (le pourcentage dépend du principe actif et est compris entre 1 et 99 %). Des médicaments se retrouvent alors dans les eaux destinées à la consommation humaine avec des concentrations allant du ng/L à la centaine de ng/L. Différents types de métabolites existent, et parmi eux les dérivés conjugués. Ils peuvent représenter 90 % des métabolites d’un principe actif. Le t

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Guerrero-Hurtado, Esperanza, Alba Gutiérrez-Docio, Rebeca Fiedorowicz, and Marin Prodanov. "Fractionation of a Procyanidin-Rich Grape Seed Extract by a Preparative Integrated Ultrafiltration/Reverse Osmosis/Solid-Phase Extraction Procedure." Membranes 15, no. 3 (2025): 92. https://doi.org/10.3390/membranes15030092.

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The consumption of grape seed extracts is known for its contribution to animal and human health and is associated with its relevant procyanidin content. However, there is a little scientific unanimity whether these properties are due to the procyanidin content or to the length of their polymers. The main reason for this doubt is the technical difficulties related to their separation. Therefore, a preparative separation of grape seed extract was carried out using an integrated ultra/diafiltration procedure with membranes of 300, 30, 5, and 1 kDa molecular mass cut-offs, reverse osmosis and soli

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Salimi, Yuszda, Nurhayati Bialangi, Widysusanti Abdulkadir, and Boima Ramses Parulian. "Senyawa Triterpenoid dari Ekstrak N-heksana Daun Kelor (Moringa oleifera Lamk.) dan Uji Aktivitas Antibakteri Terhadap Staphylococcus aureus dan Escherichia coli." Indo. J. Chem. Res. 7, no. 1 (2019): 32–40. http://dx.doi.org/10.30598//ijcr.2019.7-par.

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Kelor plant (Moringa oleifera Lamk) is a plant that grows naturally in a tropical climate. During this decoction of pirdot leaves plants are used by the people as antimicroba. The purpose of this study was to isolate triterpenoid compound from ethyl acetate extract of kelor leaves. The sample extraction was performed by maceration method using methanol as a solvent. Fractionation used n-hexana and etil asetat as a solvent. The separation and purification of the compound was carried out by column chromatography method followed by stain pattern analysis with thin layer chromatography (TLC). Char

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Salimi, Yuszda, Nurhayati Bialangi, Widysusanti Abdulkadir, and Boima Ramses Parulian. "Senyawa Triterpenoid dari Ekstrak N-heksana Daun Kelor (Moringa oleifera Lamk.) dan Uji Aktivitas Antibakteri Terhadap Staphylococcus aureus dan Escherichia coli." Indonesian Journal of Chemical Research 7, no. 1 (2019): 32–40. http://dx.doi.org/10.30598/ijcr.2019.7-par.

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Kelor plant (Moringa oleifera Lamk) is a plant that grows naturally in a tropical climate. During this decoction of pirdot leaves plants are used by the people as antimicroba. The purpose of this study was to isolate triterpenoid compound from ethyl acetate extract of kelor leaves. The sample extraction was performed by maceration method using methanol as a solvent. Fractionation used n-hexana and etil asetat as a solvent. The separation and purification of the compound was carried out by column chromatography method followed by stain pattern analysis with thin layer chromatography (TLC). Char

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Hantz, S., M. Goudard, V. Marczuk, et al. "Dépistage et typage des infections à HPV par technique INNO-LiPA sur milieu liquide Easyfix Labonord après extraction QIAamp DNA Blood Mini Kit® Qiagen et Nuclisens easyMAG® Biomérieux." Pathologie Biologie 58, no. 2 (2010): 179–83. http://dx.doi.org/10.1016/j.patbio.2009.07.019.

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ATAKPA-BASSABI, F. "Potentialités phytoremédiatrices de la jacinthe d'eau (Eichhornia crassipes) dans la purification des eaux usées au Togo." Revue Marocaine des Sciences Agronomiques et Vétérinaires 11, no. 4 (2024): 577–85. https://doi.org/10.5281/zenodo.10499072.

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La phytoremédiation est un processus d’utilisation des plantes à travers l’extraction, la stabilisation, la dégradation et la volatilisation pour dépolluer les sols, l'eau et l'air contaminés par des substances toxiques, polluantes ou des métaux lourds. Les plantes phytoremédiatrices restent à ce jour un moyen efficace pour lutter contre la pollution de l’eau, du sol et de l’air. L’objectif général du présent travail est de contribuer à l’épuration des eaux à tr

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Gérardin, Pauline, Clément Fritsch, Sylvain Cosgun, et al. "Effet de la hauteur de prélèvement sur la composition quantitative et qualitative des polyphénols de l’écorce d’Abies alba Mill." Revue forestière française 72, no. 5 (2020): 411–23. http://dx.doi.org/10.20870/revforfr.2020.5338.

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L’écorce de résineux, cultivés dans un but commercial, est une source potentielle précieuse de métabolites secondaires tels que les polyphénols. Les tannins, qui font partie des polyphénols présents dans l’écorce, sont utilisés dans la fabrication d’adhésifs et de résines, mais également en tant qu’agent de tannage, antibactérien, antifongique, antitermite et antioxydant. Peu d’informations existent à propos du rendement et de la composition des extraits d’écorce en fonction de la hauteur de l’échantillon prélevé dans le tronc ainsi qu’en fonction de la présence ou l’absence de branches. Cette

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Kone, Hervé Cédessia Kéassemon, Nicaise Tetchi Akedrin, Vama Etienne Tia, Fatou Bayoko, and Lacina Fanlégué Coulibaly. "Qualités morpho-physiologiques et évaluation du comportement germinatif des graines du théier des savanes (Lippia multiflora Moldenke)." International Journal of Biological and Chemical Sciences 14, no. 6 (2020): 1988–98. http://dx.doi.org/10.4314/ijbcs.v14i6.5.

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La domestication de Lippia multiflora, plantes aux multiples vertus en pharmacopée et médecine est un enjeu de taille en Côte d’Ivoire. Cependant, l’insuffisance de semences, due au faible taux de germination des graines, limite l’extension de sa culture. La présente étude avait pour objectif l’extraction, la purification et la caractérisation morpho-physiologique des graines de Lippia multiflora Moldenke (Verbenaceae). Il s’agissait plus spécifiquement de déterminer la pureté spécifique, le nombre de graines par unité de masse, le diamètre moyen et le taux d’humidité ; le taux de germination

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Tsikas, Dimitrios. "Extra-platelet low-molecular-mass thiols mediate the inhibitory action of S-nitrosoalbumin on human platelet aggregation via S-transnitrosylation of the platelet surface." Amino Acids 53, no. 4 (2021): 563–73. http://dx.doi.org/10.1007/s00726-021-02950-8.

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AbstractNitrosylation of sulfhydryl (SH) groups of cysteine (Cys) moieties is an important post-translational modification (PTM), often on a par with phosphorylation. S-Nitrosoalbumin (ALB-Cys34SNO; SNALB) in plasma and S-nitrosohemoglobin (Hb-Cysβ93SNO; HbSNO) in red blood cells are considered the most abundant high-molecular-mass pools of nitric oxide (NO) bioactivity in the human circulation. SNALB per se is not an NO donor. Yet, it acts as a vasodilator and an inhibitor of platelet aggregation. SNALB can be formed by nitrosation of the sole reduced Cys group of albumin (Cys34) by nitrosati

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Tekin, Kemal, and Mustafa Kocaman. "Pre-PCR Processing, PCR Facilitators and Stabilizer Additives." Journal of Molecular Virology and Immunology 1, no. 2 (2020): 11–18. https://doi.org/10.46683/jmvi.2020.8.

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<strong>Özet</strong> Polimeraz Zincir Reaksiyonu (PCR) temelli testler günümüzde enfeksiyon hastalıklarının tanı ve izleminde en sık kullanılan moleküler yöntemlerdir. PCR’ın farklı amaçlar için tasarlanmış nested PCR, ters transkripsiyon PCR, multipleks PCR, real-time PCR ve kantitatif PCR gibi çok sayıda farklı modifikasyonu geliştirilmiştir. Real-time PCR’ın bile birbirinden farklı görüntüleme yöntemleri ve prob tasarımlarının kullanıldığı çok sayıda alt tipi vardır. PCR yöntemi bu modifikasyonla

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Williams, Stacy A., James B. Wilson, Andrei Thomashevski, Nigel J. Jones, and Gary Kupfer. "A Role for Mismatch Repair Factors in the FA-BRCA Pathway." Blood 114, no. 22 (2009): 1095. http://dx.doi.org/10.1182/blood.v114.22.1095.1095.

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Abstract Abstract 1095 Poster Board I-117 Introduction Fanconi anemia (FA) is a rare genetic disorder characterized by bone marrow failure, congenital abnormalities, and an increased risk for cancer and leukemia. Components of the FA-BRCA pathway are thought to function in the repair of DNA interstrand crosslinks (ICLs). Central to this pathway is the monoubiquitylation and chromatin localization of two FA proteins, FANCD2 and FANCI. Recent reports implicate mismatch repair factors in the repair of ICLs and have shown that FANCJ interacts with the MutLαa complex. Here we show that FANCD2 binds

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Nguyen, Duc Hieu, Quoc Anh Hoang, Binh Minh Tu, et al. "Polycyclic aromatic hydrocarbons (PAHs) in sediment environments in Vietnam: Analytical methods and contamination status." Science and Technology Development Journal, 2024. http://dx.doi.org/10.32508/stdj.v27i1.4217.

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Introduction: Polycyclic aromatic hydrocarbons (PAHs) are prevalent organic pollutants that garner attention due to their toxicity and carcinogenic properties. These hydrophobic compounds tend to accumulate in the organic components of sediments, posing significant ecological risks. Methods: This study synthesizes analytical methodologies and assesses the contamination status of PAHs in Vietnamese sediments through a review of previous studies complemented by recent findings from our research group. Various extraction techniques, including Soxhlet extraction, pressurized liquid extraction, con

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SORO, Donafologo Baba NGUETTIA Kossonou Roland DIARRA Moussa MEITE Ladji, and Kouassi Narcisse KOUASSI Kouakou Edouard KONE Mamadou and TRAORE Karim Sory ABOUA. "NIVEAU DE CONTAMINATION DE LA CHAIR DE POULET BICYCLETTE (GALLUS GALLUS DOMESTICUS) PAR LES HYDROCARBURES AROMATIQUES POLYCYCLIQUES (HAP)." October 14, 2022. https://doi.org/10.5281/zenodo.7325823.

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Polycyclic aromatic hydrocarbons (PAHs) are among the organic pollutants sought both in the various environmental compartments (water, soil, air, etc.) and in food intended for human consumption. They are a group of persistent organic pollutants that are potentially mutagenic and carcinogenic. Thus, the present study aims to determine the PAH levels in the flesh of local poultry also called bicycle chickens (gallus gallusdomesticus). Ten (10) composite samples of chickens were collected in Karakoro, a locality located in the department of Korhogo in the north of Cote dIvoire. After the extract

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Benny, Antony Merina, Antony Benny, and E. S. Aravind. "Determination of PAH Benzo[a]anthracene, Chrysene, Benzo[b]flouranthene and Benzo[a]pyrene in Hydro Alcoholic Herbal Extracts with Fluorescence Detector Using Solid-Phase Extraction." Journal of Chromatographic Science, November 14, 2020. http://dx.doi.org/10.1093/chromsci/bmaa089.

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Abstract An appropriate purification and quantification method has been developed for polycyclic aromatic hydrocarbons (PAH) in hydro alcoholic herbal extracts. For this, Bacopa monnieri, Camellia sinensis, Withania somnifera and Andrographis paniculata samples were extracted with modified solid-phase extraction (SPE) and the PAH were quantified using liquid chromatography coupled to fluorescence detector. Purification of herbal extract using hexane and acetone in the ratio of 1:1 followed by treatment with QuEChERS salt (6 g MgSO4 and 1.5 g sodium acetate) improved the recovery rate of PAH. S

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Goumbri, Bertrand W. F., Olivia Jansen, Roland D. Marini, et al. "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 (2023). http://dx.doi.org/10.57220/jatpb.v2i3.114.

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Introduction : Les rayons ultraviolet (UVR) peuvent-être nocifs pour la peau, par l’action des radicaux libres générés par les espèces réactives de l’oxygène (ROS), comme l’oxygène singulet (1O2). Le beurre de karité (BK) revendique des propriétés de photoprotection contre les rayons UVA et UVB, par l’action de ses insaponifiables. Notre étude consiste à déterminer la capacité antioxydante du BK extrait au Burkina Faso, et à évaluer in vitro son pouvoir de photoprotection indirecte. Matériel et Méthodes : Les composés phénoliques totaux du BK brut, ont été obtenus par extraction liquide-

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Rizzioli, Fabio, Vittoria Benedetti, Francesco Patuzzi, Marco Baratieri, David Bolzonella, and Federico Battista. "Valorization of orange peels in a biorefinery loop: recovery of limonene and production of volatile fatty acids and activated carbon." Biomass Conversion and Biorefinery, January 13, 2023. http://dx.doi.org/10.1007/s13399-023-03738-4.

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AbstractOrange peels (OPs) were valorized in a lab-scale biorefinery loop for the recovery of limonene and the subsequent production of volatile fatty acids (VFAs) and activated carbon (AC). Solid/liquid extraction of limonene was optimized using n-hexane at 85 °C with an OPs-to-solvent ratio of 2:1, allowing for a limonene recovery yield of 1.20% w/w. Then, post-extraction OPs were used for the production of both VFAs and AC. For VFA production, a hydraulic retention time (HRT) of 5 days and a total solid (TS) inlet content of 10% w/w were adopted leading to a VFA yield of about 43% gVFAs/gTS

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Béchiri, O., M. Abbessi, ME Samar, and R. Belghiche. "Extraction du complexe (&#87331P₂W₁₇O₆₁Fe)7-, par membrane liquide emulsionnee." Afrique Science: Revue Internationale des Sciences et Technologie 3, no. 1 (2010). http://dx.doi.org/10.4314/afsci.v3i1.61228.

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Doupa, Dominique. "ETUDE DU MECANISME D’ACTION ANTIDIABETIQUE DE L’EXTRAIT TOTAL HYDRO-ALCOOLIQUE (EHA) DES ECORCES DE FAIDHERBIA ALBIDA." Dakar Medical 68, no. 2 (2024). http://dx.doi.org/10.61585/pud-dkm-v68n208.

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Introduction : La présente étude avait pour objectif d’évaluer l’effet sur le glucose sanguin d’un extrait hydro-éthanolique des écorces de F. albida (Fabacées) sur un modèle d’étude du diabète. Matériel et méthodes : La poudre des écorces de Faidherbia albida a été traitée par extraction hydro-éthanolique. L’extrait hydro-alcoolique (EHA) obtenu a été caractérisé au plan phytochimique et testé chez des rats normoglycémiques, sur un test de tolérance au glucose et chez des rats diabétiques de type 2. Résultats : L’EHA renfermant des flavonoïdes, des tanins et dépourvu d’alcaloïdes, est sans ef

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Wu, Han, Qing-Ru Di, Liang Zhong, et al. "Enhancement on antioxidant, anti-hyperglycemic and antibacterial activities of blackberry anthocyanins by processes optimization involving extraction and purification." Frontiers in Nutrition 9 (October 11, 2022). http://dx.doi.org/10.3389/fnut.2022.1007691.

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This research aimed to recover anthocyanin-rich extracts from blackberry (Rubus spp. Hull cultivar) by optimizing the processing conditions, and to characterize anthocyanin individuals and determine influences of optimization on enhancement of antioxidant and anti-hyperglycemic activities of anthocyanins as natural supplements. The ethanol concentration of 69.87%, HCl dosage of 0.53%, solid-to-liquid ratio of 1:19.06 at 47.68°C for 17.04 h were optimal to obtain the highest extraction yield of anthocyanins at 0.72 mg/g. By using AB-8 macroporous resins, the anthocyanin concentration of 3.0 mg/

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sprotocols. "Integration of multiple expression cassettes into mammalian genomes in a single step." January 22, 2015. https://doi.org/10.5281/zenodo.14267.

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Authors: Andrijana Kriz, Katharina Schmid, Kurt Ballmer & Philipp Berger ### Abstract The modification of mammalian cells by the expression of multiple genes is a crucial technology in modern biological research. MultiLabel allows the modular assembly of independent expression units in a single plasmid which can be used for transient and stable modification of cells. In contrast to other methods, the assembly of the expression cassettes does not require restriction enzymes since it is recombination based. Here we describe strategies how genes of interest are efficiently cloned into MultiLa

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