Search

Your search keyword '"Desjobert, Jean-Marie"' showing total 136 results
Start Over Author "Desjobert, Jean-Marie"
136 results on '"Desjobert, Jean-Marie"'

12. The Flavonoid Compounds from Zanthoxylum leprieurii Guill. et Perr (Rutaceae) Extracts and their Antioxidant Activity against ABTS•+

Author

TINE, Yoro, DIALLO, Alioune, NDOYE, Idrissa, YANG, Yin, RENUCCI, Franck, Guèye, Rokhya Sylla, Baldé, Mamadou, Diédhiou, Adama, Fall, Djibril, Seck, Matar, Desjobert, Jean-Marie, COSTA, Jean, WELE, Alassane, PAOLINI, Julien, TINE, Yoro, DIALLO, Alioune, NDOYE, Idrissa, YANG, Yin, RENUCCI, Franck, Guèye, Rokhya Sylla, Baldé, Mamadou, Diédhiou, Adama, Fall, Djibril, Seck, Matar, Desjobert, Jean-Marie, COSTA, Jean, WELE, Alassane, and PAOLINI, Julien

Abstract

Screening of flavonoid compounds in fruit, leaf, stem and root bark extracts of Z. leprieurii was achieved by liquid chromatography (LC) coupled with tandem mass spectrometry (MS2). Among the 186 reference compounds tested, four flavonoids were identified in one or other of the organ extracts from each plant (fruit, leaf, root barks and stem): neodiosmin and hesperidin were identified in all extracts. The presence of datiscin was reported only in leaves while that of rutin was identified in fruits and leaves. Of these four flavonoids, three (neodiosmin, datiscin and rutin) are detected for the first time in Z. leprieurii. The antioxidant properties of different extracts were tested regarding their scavenging activities on ABTS•+ radical. Fruit, leaf and stem extracts had low antioxidant potential and root bark extracts exhibited very low antioxidant activity. Keywords: Zanthoxylum leprieurii, flavonoids, LC-MS/MS and antioxidant activity.

Published
2020

13. Variation of essential oil composition of fruits of Zanthoxylum leprieurii Guill. et Perr (Rutaceae) from different sample locations and during their maturation period

Author

Tine, Yoro, primary, Diallo, Alioune, additional, Diatta, William, additional, Ndoye, Idrissa, additional, Guèye, Rokhya Sylla, additional, Baldé, Mamadou, additional, Diédhiou, Adama, additional, Fall, Djibril, additional, Seck, Matar, additional, Desjobert, Jean-Marie, additional, Costa, Jean, additional, Wélé, Alassane, additional, and Paolini, Julien, additional

Published
2020
Full Text
View/download PDF

14. The Flavonoid Compounds from Zanthoxylum leprieurii Guill. et Perr (Rutaceae) Extracts and their Antioxidant Activity against ABTS•+

Author

TINE, Yoro, primary, DIALLO, Alioune, primary, NDOYE, Idrissa, primary, YANG, Yin, primary, RENUCCI, Franck, primary, Guèye, Rokhya Sylla, primary, Baldé, Mamadou, primary, Diédhiou, Adama, primary, Fall, Djibril, primary, Seck, Matar, primary, Desjobert, Jean-Marie, primary, COSTA, Jean, primary, WELE, Alassane, primary, and PAOLINI, Julien, primary

Published
2020
Full Text
View/download PDF

16. Characterization of volatile compounds of Daucus crinitus Desf. Headspace Solid Phase Microextraction as alternative technique to Hydrodistillation

Author

Tabti Boufeldja, Allali Houcine, Desjobert Jean-Marie, Djabou Nassim, El Amine Dib Mohammed, Muselli Alain, and Costa Jean

Subjects
Chemistry, QD1-999
Abstract

Abstract Background Traditionally, the essential oil of aromatic herbs is obtained using hydrodistillation (HD). Because the emitted volatile fraction plays a fundamental role in a plant's life, various novel techniques have been developed for its extraction from plants. Among these, headspace solid phase microextraction (HS-SPME) can be used to obtain a rapid fingerprint of a plant's headspace. Daucus crinitus Desf. is a wild plant that grows along the west coast of Algeria. Only a single study has dealt with the chemical composition of the aerial part oils of Algerian D. crinitus, in which isochavicol isobutyrate (39.0%), octyl acetate (12.3%), and β-caryophyllene (5.4%) were identified. Using GC-RI and GC-MS analysis, the essential oils and the volatiles extracted from separated organs of D. crinitus Desf. were studied using HS-SPME. Results GC-RI and GC-MS analysis identified 72 and 79 components in oils extracted using HD and in the volatile fractions extracted using SPME, respectively. Two types of essential oils were produced by the plant: the root oils had aliphatic compounds as the main component (87.0%-90.1%), and the aerial part oils had phenylpropanoids as the main component (43.1%-88.6%). HS-SPME analysis showed a more precise distribution of compounds in the organs studied: oxygenated aliphatic compounds were well represented in the roots (44.3%-84.0%), hydrocarbon aliphatic compounds were in the leaves and stems (22.2%-87.9%), and phenylpropanoids were in the flowers and umbels (47.9%-64.2%). Moreover, HS-SPME allowed the occurrence of isochavicol (29.6 - 34.7%) as main component in D. crinitus leaves, but it was not detected in the oils, probably because of its solubility in water. Conclusions This study demonstrates that HD and HS-SPME modes could be complimentary extraction techniques in order to obtain the complete characterization of plant volatiles.

Published
2010
Full Text
View/download PDF

17. Flavonoid Compounds from Zanthoxylum leprieurii Guill. et Perr (Rutaceae) Extracts and their Antioxidant Activity against ABTS.

Author

Yoro Tine, Diallo, Alioune, Ndoye, Idrissa, Yin Yang, Renucci, Franck, Guèye, Rokhya Sylla, Baldé, Mamadou, Diédhiou, Adama, Fall, Djibril, Seck, Matar, Desjobert, Jean-Marie, Costa, Jean, Wélé, Alassane, and Paolini, Julien

Subjects
TANDEM mass spectrometry, ZANTHOXYLUM, HESPERIDIN, RUTACEAE, EXTRACTS
Abstract

Screening of flavonoid compounds in fruit, leaf, stem and root bark extracts of Z. leprieurii was achieved by liquid chromatography (LC) coupled with tandem mass spectrometry (MS2). Among the 186 reference compounds tested, four flavonoids were identified in one or other of the organ extracts from each plant (fruit, leaf, root barks and stem): neodiosmin and hesperidin were identified in all extracts. The presence of datiscin was reported only in leaves while that of rutin was identified in fruits and leaves. Of these four flavonoids, three (neodiosmin, datiscin and rutin) are detected for the first time in Z. leprieurii. The antioxidant properties of different extracts were tested regarding their scavenging activities on ABTS•+ radical. Fruit, leaf and stem extracts had low antioxidant potential and root bark extracts exhibited very low antioxidant activity. [ABSTRACT FROM AUTHOR]

Published
2020
Full Text
View/download PDF

22. Analysis of smoke during prescribed fire

Author

Barboni, Toussaint, Chiaramonti, Nathalie, Leoni, Eric, Desjobert, Jean-Marie, Santoni, Paul-Antoine, Sciences pour l'environnement (SPE), Centre National de la Recherche Scientifique (CNRS)-Université Pascal Paoli (UPP), and Barboni, Toussaint

Subjects
[CHIM.ANAL] Chemical Sciences/Analytical chemistry, [CHIM.ANAL]Chemical Sciences/Analytical chemistry
Abstract

International audience; This work consist in sampling and analyzing smoke released by typical Mediterranean vegetation during a fire. To proceed we used an experimental apparatus made of an air sampling pump with a cartridge filled with Tenax® TA. The sampling device was situated in a fixed place corresponding to the position of a fireman for the four studied stations. Analyses were performed at the laboratory by gas chromatography one day after the field experiment. Samples were Thermally Desorbed from the cartridges in the Gas Chromatography column coupled to a detector by Mass Spectrometry. We aim to characterize the risks related to the toxicity of smoke in actual conditions. Benzene, Toluene and Xylene (BTX) are highly toxic compounds that we propose to quantify in the smoke sampled during the fire

Published
2006

23. Analyse des gaz de combustion et des COV libérés pendant un feu de Pin

Author

Barboni, Toussaint, Chiaramonti, Nathalie, Leoni, Eric, Desjobert, Jean-Marie, Sciences pour l'environnement (SPE), Centre National de la Recherche Scientifique (CNRS)-Université Pascal Paoli (UPP), and Barboni, Toussaint

Subjects
[CHIM.ANAL] Chemical Sciences/Analytical chemistry, [CHIM.ANAL]Chemical Sciences/Analytical chemistry
Abstract

Chaque été, de nombreux feux dévastent nos régions méditerranéenne. Le feu est un mécanisme physico-chimique complexe. L'étude porte sur des aiguilles de pin (Pinus nigra ssp laricio variété Corsicana) avec une analyse des composés émis naturellement par le végétal jusqu'à une température inférieure à 200°C. Ces composés sont à majorités des monoterpènes hydrocarbonés dont l'α-pinène est le composé abondant. L'analyse des fumées du pin montre une composition riche en dérivés benzéniques et phénoliques. Ces composés sont toxiques et une étude sur la concentration en BTX montre que le benzène est proche de la valeur critique (VLE). De plus, si l'ensemble de ces composés se retrouvent dans certaines conditions géographiques avec des concentrations proche de la LII, ils peuvent créer une situation critique dénommée flash-over.

Published
2006

25. Analyse des arômes de jus de fruits par SPME/GC/MS

Author

Barboni, Toussaint, Chiaramonti, Nathalie, Muselli, Alain, Desjobert, Jean-Marie, Bernardini, A.F., Costa, Jean, Barboni, Toussaint, Sciences pour l'environnement (SPE), and Centre National de la Recherche Scientifique (CNRS)-Université Pascal Paoli (UPP)

Subjects
[CHIM.ANAL] Chemical Sciences/Analytical chemistry, [CHIM.ANAL]Chemical Sciences/Analytical chemistry
Published
2005

26. Analyse des composés volatils dans les fruits et jus de fruits

Author

Barboni, Toussaint, Malaterre, Pascal, Chiaramonti, Nathalie, Muselli, Alain, Desjobert, Jean-Marie, Bernardini, A.F., Costa, Jean, Sciences pour l'environnement (SPE), Centre National de la Recherche Scientifique (CNRS)-Université Pascal Paoli (UPP), and Barboni, Toussaint

Subjects
[CHIM.ANAL] Chemical Sciences/Analytical chemistry, [CHIM.ANAL]Chemical Sciences/Analytical chemistry
Published
2004

28. Efficacy of the essential oil of Origanum glandulosum Desf against skin infections With PVL-producing Staphylococcus aureus strains in mice

Author

KHADIR, Abdelmounaiuml m, primary, BENDAHOU, Mourad, additional, BENBELAIuml D, Fethi, additional, GHELLAIuml, Lotfi, additional, ABDOUNE, Mohamed Amine, additional, BELLAHSENE, Chafika, additional, ZENATI, Fatima, additional, ABDELOUAHID, Djamel Eddine, additional, MUSELLI, Alain, additional, PAOLLINI, Julien, additional, DESJOBERT, Jean Marie, additional, and COSTA, Jean, additional

Published
2013
Full Text
View/download PDF

29. Phytochemical composition of Corsican Teucrium essential oils and antibacterial activity against foodborne or toxi-infectious pathogens

Author

Djabou, Nassim, primary, Lorenzi, Vanina, additional, Guinoiseau, Elodie, additional, Andreani, Stéphane, additional, Giuliani, Marie-Cécile, additional, Desjobert, Jean-Marie, additional, Bolla, Jean-Michel, additional, Costa, Jean, additional, Berti, Liliane, additional, Luciani, Anne, additional, and Muselli, Alain, additional

Published
2013
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results