Výsledky vyhledávání - "Philippe Jéhan"

Akademický článek

Novel Antifungal Compounds, Spermine-Like and Short Cyclic Polylactates, Produced by Lactobacillus harbinensis K.V9.3.1Np in Yogurt

Autor: Amor Mosbah, Emilie Delavenne, Yasmine Souissi, Mouna Mahjoubi, Philippe Jéhan, Nicolas Le Yondre, Ameur Cherif, Arnaud Bondon, Jérôme Mounier, Michèle Baudy-Floc’h, Gwenaelle Le Blay

Publikováno v: Frontiers in Microbiology, Vol 9 (2018)

Lactobacillus harbinensis K.V9.3.1Np was described as endowed with high antifungal activity. Most of the studies associated this activity to the produced organic acids, i.e., lactic acid, acetic acid, and hexanoic acid. The aim of this study was to p

Externí odkaz: https://doaj.org/article/4da5f4cd789845d58ec945c1bd7addfe

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New insights into the Van Krevelen diagram: Automated molecular formula determination from HRMS for a large chemical profiling of lichen extracts

Autor: Simon Ollivier, Philippe Jéhan, Damien Olivier‐Jimenez, Fabian Lambert, Joël Boustie, Françoise Lohézic‐Le Dévéhat, Nicolas Le Yondre

Publikováno v: Phytochemical Analysis
Phytochemical Analysis, 2022, 33 (7), pp.1111-1120. ⟨10.1002/pca.3163⟩

International audience; Introduction In recent years, LC-MS has become the golden standard for metabolomic studies. Indeed, LC is relatively easy to couple with the soft electrospray ionization. As a consequence, many tools have been developed for th

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b5b8349641142b6d4a2786e9466dfba5
https://doi.org/10.1002/pca.3163

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ASAP-MS and DART-MS as ancillary tools for direct analysis of the lichen metabolome

Autor: Simon Ollivier, Philippe Jéhan, Fabian Lambert, Damien Olivier‐Jimenez, Joël Boustie, Françoise Lohézic‐Le Dévéhat, Nicolas Le Yondre

Publikováno v: Phytochemical Analysis
Phytochemical Analysis, 2022, 33 (7), pp.1028-1035. ⟨10.1002/pca.3156⟩

International audience; Introduction Lichens contain unique metabolites that most often need to be characterized from a limited amount of material. While thin layer chromatography is still the preferred analysis method for most lichenologists, liquid

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::11d74654b2259575f820d5b05cd99558
https://pubmed.ncbi.nlm.nih.gov/35753311

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Organocatalyzed ring-opening polymerization (ROP) of functional β-lactones: new insights into the ROP mechanism and poly(hydroxyalkanoate)s (PHAs) macromolecular structure

Autor: Ali Alaaeddine, Rama M. Shakaroun, Philippe Jéhan, Jean-François Carpentier, Sophie M. Guillaume

Publikováno v: Polymer Chemistry
Polymer Chemistry, 2020, 11 (15), pp.2640-2652. ⟨10.1039/d0py00125b⟩
Polymer Chemistry, Royal Society of Chemistry-RSC, 2020, 11 (15), pp.2640-2652. ⟨10.1039/d0py00125b⟩

International audience; The organocatalyzed ring-opening polymerization (ROP) of various 4-alkoxymethylene-beta-propiolactones (BPL(OR)s; R = CH2CH=H-2 (All), CH2Ph (Bn), (CH2)(3)CH3 (Bu-n), (SiMe2Bu)-Bu-t (TBDMS)) towards the formation of the corres

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a6f1e55e46a15a166606bd2ffc5ed6bc
https://doi.org/10.1039/d0py00125b

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Stereoselective ring-opening polymerization of functional β-lactones: influence of the exocyclic side-group

Autor: Philippe Jéhan, Ali Alaaeddine, Sophie M. Guillaume, Marielle Blot, Hui Li, Jean-François Carpentier, Rama M. Shakaroun

Publikováno v: Polymer Chemistry
Polymer Chemistry, Royal Society of Chemistry-RSC, 2021, 12 (28), pp.4022-4034. ⟨10.1039/D1PY00669J⟩
Polymer Chemistry, 2021, 12 (28), pp.4022-4034. ⟨10.1039/D1PY00669J⟩

International audience; Polyhydroxyalkanoates (PHAs) are a unique class of polyesters especially due to their chemical diversity imparted by their side-chain substituent that provides a handle to tune their properties, such as their thermal, mechanic

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::23bf538bb4479cc9372f834ed7aad61a
https://hal-univ-rennes1.archives-ouvertes.fr/hal-03326803/document

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Microwave assisted extraction of bioactive saponins from the starfish Echinaster sepositus: Optimization by response surface methodology and comparison with ultrasound and conventional solvent extraction

Autor: Philippe Jéhan, Mohamed Chibane, Lotfi Mouni, Bouchra Dahmoune, Vincent Ferrières, Thomas Vives, Fouzia Houma-Bachari, Jean-Paul Guégan, Farid Dahmoune, Didier Hauchard, Cherifa Akrour-Aissou

Publikováno v: Chemical Engineering and Processing: Process Intensification
Chemical Engineering and Processing: Process Intensification, Elsevier, 2021, 163, pp.108359. ⟨10.1016/j.cep.2021.108359⟩
Chemical Engineering and Processing: Process Intensification, 2021, 163, pp.108359. ⟨10.1016/j.cep.2021.108359⟩

International audience; Microwave assisted extraction (MAE) was investigated for the extraction of total saponins compounds from the starfish Echinaster sepositus. In order to achieve optimization of microwave extraction and to determine the influenc

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ca9ebf510e5833bf27b6276a64618e48
https://hal.archives-ouvertes.fr/hal-03196096

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Aza-aromatic polycycles based on triphenylene and acridine or acridone: synthesis and properties

Autor: William Erb, Philippe Jéhan, Olivier Mongin, Thierry Roisnel, Nicolas Le Yondre, François-Hugues Porée, Ghenia Bentabed-Ababsa, Salima Bouarfa, Florence Mongin

Publikováno v: New Journal of Chemistry
New Journal of Chemistry, 2021, 45 (32), pp.14414-14424. ⟨10.1039/D1NJ02630E⟩
New Journal of Chemistry, Royal Society of Chemistry, 2021, 45 (32), pp.14414-14424. ⟨10.1039/D1NJ02630E⟩

International audience; Acridine- and acridone-based polycyclic aromatics were prepared by using as the key steps a copper-catalysed N-arylation of 2-aminobenzaldehyde, 2-aminophenones, or ethyl 2-aminobenzoate with 2-iodotriphenylene, and an acid-me

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f557ef554af978ecfd687d751fa629ef
https://univ-rennes.hal.science/hal-03302148/document

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Saponin contents in the starfish Echinaster sepositus: Chemical characterization, qualitative and quantitative distribution

Autor: Lotfi Mouni, Jean-Paul Guégan, Vincent Ferrieres, Cherifa Aissou-Akrour, Mohamed Chibane, Farid Dahmoune, Fouzia Bachari-Houma, Bouchra Dahmoune, Philippe Jéhan, Didier Hauchard

Publikováno v: Biochemical Systematics and Ecology
Biochemical Systematics and Ecology, Elsevier, 2021, 96, pp.104262. ⟨10.1016/j.bse.2021.104262⟩
Biochemical Systematics and Ecology, 2021, 96, pp.104262. ⟨10.1016/j.bse.2021.104262⟩

International audience; In this study, we report the inter-organ, the sexual and the seasonal variability, of saponins contained in the common Mediterranean starfish Echinaster (Echinaster) sepositus. Saponins were extracted from five distinct body c

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ded420e24001e7b1f974df707629a0c5
https://hal.archives-ouvertes.fr/hal-03225442

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Solventless and Metal-Free Synthesis of High-Molecular-Mass Polyaminoboranes from Diisopropylaminoborane and Primary Amines

Autor: Carlos Antonio De Albuquerque Pinheiro, Claire Roiland, Philippe Jéhan, Gilles Alcaraz

Publikováno v: Angewandte Chemie International Edition
Angewandte Chemie International Edition, Wiley-VCH Verlag, 2018, 57 (6), pp.1519-1522. ⟨10.1002/anie.201710293⟩
Angewandte Chemie International Edition, 2018, 57 (6), pp.1519-1522. ⟨10.1002/anie.201710293⟩

The solventless reaction of diisopropylaminoborane with n-butylamine, at room temperature, leads to a mixture of B(sp2) H-, B(sp3) H2 -, and B(sp3) H3 -containing species. At low temperature, the reaction outcome is completely modified, thus leading

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b47d176c097be2a29dad27dcd7161313
https://doi.org/10.1002/anie.201710293

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Chemical analysis of the Alphaproteobacterium strain MOLA1416 associated with the marine lichen Lichina pygmaea

Autor: Laurent Intertaglia, Delphine Parrot, Philippe Jéhan, Sophie Tomasi, Marcelino T. Suzuki, Martin Grube

Publikováno v: Phytochemistry
Phytochemistry, Elsevier, 2018, 145, pp.57-67. ⟨10.1016/j.phytochem.2017.10.005⟩
Phytochemistry, 2018, 145, pp.57-67. ⟨10.1016/j.phytochem.2017.10.005⟩

International audience; Alphaproteobacterium strain MOLA1416, related to Mycoplana ramosa DSM 7292 and Chelativorans intermedius CC-MHSW-5 (93.6% 16S rRNA sequence identity) was isolated from the marine lichen, Lichina pygmaea and its chemical compos

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bab4a4f6c8e4f244f1b88f050d0f14a2
https://doi.org/10.1016/j.phytochem.2017.10.005

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