1
|
Furet A, Sicello A, Guillemat B, Absalon C, Langleron E, Bassani DM. Revisiting the mechanism responsible for the light-struck flavor in white wines and Champagnes. Food Chem 2022; 372:131281. [PMID: 34655832 DOI: 10.1016/j.foodchem.2021.131281] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2021] [Revised: 09/23/2021] [Accepted: 09/28/2021] [Indexed: 11/04/2022]
Abstract
The mechanism responsible for the appearance of the light-struck fault upon exposure of white wines and Champagnes to natural or artificial light is examined in light of new experiments involving methionine analogues. The latter show that the formation of volatile sulfur species upon irradiation of riboflavin in the presence of methionine in model wine solutions at pH 3 is not dependent on the existence of neighboring group stabilization of the sulfur-centered cation radical through a 5- or 6-membered cyclic intermediate. Instead, the formation of a dimer radical cation is proposed in agreement with the formation of oxidation products such as dimethyl disulfide at early reaction times and the observed steric effect upon product distribution. The limiting quantum yield for the release of sulfur atoms from a solution of methionine in model wine solutions at pH 3.5 containing riboflavin was found to be 0.26 (435 nm irradiation). No dependence of the quantum yield or product distribution on the irradiation wavelength was found over the range 365-90 nm.
Collapse
Affiliation(s)
- Amaury Furet
- Univ. Bordeaux, CNRS UMR 5255, Inst. des Sciences Moléculaires, 351, Cours de la Libération, 33405 Talence, France
| | - Audrey Sicello
- Univ. Bordeaux, CNRS UMR 5255, Inst. des Sciences Moléculaires, 351, Cours de la Libération, 33405 Talence, France
| | - Bruno Guillemat
- Pernod-Ricard S.A., 5, cours Paul Ricard, 75008 Paris, France
| | - Christelle Absalon
- Univ. Bordeaux, CNRS UMR 5255, Inst. des Sciences Moléculaires, 351, Cours de la Libération, 33405 Talence, France
| | - Emilie Langleron
- Mumm, Perrier-Jouët, 34, Rue du Champ de Mars, 51053 Reims, France
| | - Dario M Bassani
- Univ. Bordeaux, CNRS UMR 5255, Inst. des Sciences Moléculaires, 351, Cours de la Libération, 33405 Talence, France.
| |
Collapse
|
2
|
Picard M, Garrouste C, Absalon C, Nonier MF, Vivas N, Vivas N. Development of a Solid-Phase Microextraction-Gas Chromatography/Mass Spectrometry Method for Quantifying Nitrogen-Heterocyclic Volatile Aroma Compounds: Application to Spirit and Wood Matrices. J Agric Food Chem 2019; 67:13694-13705. [PMID: 31756091 DOI: 10.1021/acs.jafc.9b05716] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Over wood aging, matured spirits developed a complex aromatic bouquet where roasted-like notes were often perceived. Since many nitrogen heterocycles were related to these olfactory nuances, a headspace solid-phase microextraction (HS-SPME) coupled to gas chromatography-mass spectrometry was developed and validated to quantify them in both spirit and wood matrices. The various parameters affecting the extraction of the analytes from both spirit and wood samples were first investigated (i.e., fiber coating phase, dilution, pH and volume sample, adding salt, extraction time and temperature, and incubation time) to determine the best compromise for a single-run analysis of the whole set of studied compounds. Good linearity (R2 > 0.99), repeatability, reproducibility, accuracy and low detection, and quantification limits were obtained, making this analytical method a suitable tool for routine analysis of the selected nitrogen compounds. Fifteen pyrazines, three pyrroles, and three quinolines were quantified in a series of oak wood and commercial spirit samples where some of them were identified for the first time. The significant impact of some barrel features and the spirit in-wood maturation step on the N-heterocycle profile in both matrices were finally discussed.
Collapse
|
3
|
Beniazza R, Atkinson R, Absalon C, Castet F, Denisov SA, McClenaghan ND, Lastécouères D, Vincent JM. Benzophenonevs. Copper/Benzophenone in Light-Promoted Atom Transfer Radical Additions (ATRAs): Highly Effective Iodoperfluoroalkylation of Alkenes/Alkynes and Mechanistic Studies. Adv Synth Catal 2016. [DOI: 10.1002/adsc.201600501] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Redouane Beniazza
- Univ. Bordeaux - CNRS UMR 5255; 351 Crs de la Libération 33405 Talence France
| | - Rachel Atkinson
- Univ. Bordeaux - CNRS UMR 5255; 351 Crs de la Libération 33405 Talence France
| | - Christelle Absalon
- Univ. Bordeaux - CNRS UMR 5255; 351 Crs de la Libération 33405 Talence France
| | - Frédéric Castet
- Univ. Bordeaux - CNRS UMR 5255; 351 Crs de la Libération 33405 Talence France
| | - Sergey A. Denisov
- Univ. Bordeaux - CNRS UMR 5255; 351 Crs de la Libération 33405 Talence France
| | | | | | - Jean-Marc Vincent
- Univ. Bordeaux - CNRS UMR 5255; 351 Crs de la Libération 33405 Talence France
| |
Collapse
|
4
|
Vivas N, Vivas de Gaulejac N, Vitry C, Mouche C, Kahn N, Nonier-Bourden MF, Absalon C. Impact of ethanol content on the scavenging activities of oak woodC-glycosidic ellagitannins. Application to the evaluation of the nutritional status of spirits. J Inst Brew 2013. [DOI: 10.1002/jib.70] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Nicolas Vivas
- Demptos Research Center, ISM/CESAMO; Université Bordeaux 1; 351 cours de la Libération; 33405; Talence; France
| | - Nathalie Vivas de Gaulejac
- Demptos Research Center, ISM/CESAMO; Université Bordeaux 1; 351 cours de la Libération; 33405; Talence; France
| | | | | | - Nadège Kahn
- Demptos Research Center, ISM/CESAMO; Université Bordeaux 1; 351 cours de la Libération; 33405; Talence; France
| | | | | |
Collapse
|
5
|
Feng X, Chaikof EL, Absalon C, Drummond C, Taton D, Gnanou Y. Dendritic Carrier Based on PEG: Design and Degradation of Acid-sensitive Dendrimer-like Poly(ethylene oxide)s. Macromol Rapid Commun 2011; 32:1722-8. [DOI: 10.1002/marc.201100459] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2011] [Indexed: 01/08/2023]
|
6
|
Sakouhi F, Herchi W, Sbei K, Absalon C, Boukhchina S. Characterisation and accumulation of squalene and n-alkanes in developing Tunisian Olea europaea L. fruits. Int J Food Sci Technol 2011. [DOI: 10.1111/j.1365-2621.2011.02747.x] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
7
|
Absalon C, Fabre S, Tarascou I, Fouquet E, Pianet I. New strategies to study the chemical nature of wine oligomeric procyanidins. Anal Bioanal Chem 2011; 401:1485-95. [DOI: 10.1007/s00216-011-4988-1] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2011] [Revised: 04/01/2011] [Accepted: 04/05/2011] [Indexed: 11/28/2022]
|
8
|
Kostjuk SV, Ouardad S, Peruch F, Deffieux A, Absalon C, Puskas JE, Ganachaud F. Carbocationic Polymerization of Isoprene Co-initiated by B(C6F5)3: An Alternative Route toward Natural Rubber Polymer Analogues? Macromolecules 2011. [DOI: 10.1021/ma1027966] [Citation(s) in RCA: 68] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Sergei V. Kostjuk
- Research Institute for Physical Chemical Problems, Belarusian State University, 14 Leningradskaya st., 220030 Minsk, Belarus
- UMR5253 CNRS/UM2/ENSCM/UM1, Engineering of Macromolecular Architectures, ENSCM, Institut Charles Gerhardt, 8 Rue de l’Ecole Normale, 34296 Montpellier Cedex, France
| | - Samira Ouardad
- Laboratoire de Chimie des Polymères Organiques, UMR 5629 CNRS/UB1/IPB, University of Bordeaux, 16 avenue Pey Berland, 33607 Pessac Cedex, France
| | - Frédéric Peruch
- Laboratoire de Chimie des Polymères Organiques, UMR 5629 CNRS/UB1/IPB, University of Bordeaux, 16 avenue Pey Berland, 33607 Pessac Cedex, France
| | - Alain Deffieux
- Laboratoire de Chimie des Polymères Organiques, UMR 5629 CNRS/UB1/IPB, University of Bordeaux, 16 avenue Pey Berland, 33607 Pessac Cedex, France
| | - Christelle Absalon
- Institut des Sciences Moléculaires, University of Bordeaux, 351 cours de la libération, 33405 Talence Cedex, France
| | - Judit E. Puskas
- Department of Polymer Science, The University of Akron, Akron, Ohio 44325-3909, United States
| | - François Ganachaud
- UMR5253 CNRS/UM2/ENSCM/UM1, Engineering of Macromolecular Architectures, ENSCM, Institut Charles Gerhardt, 8 Rue de l’Ecole Normale, 34296 Montpellier Cedex, France
| |
Collapse
|
9
|
Diallo AK, Absalon C, Ruiz J, Astruc D. Ferrocenyl-terminated redox stars: synthesis and electrostatic effects in mixed-valence stabilization. J Am Chem Soc 2010; 133:629-41. [PMID: 21155610 DOI: 10.1021/ja109380u] [Citation(s) in RCA: 130] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A family of rigid ferrocenyl-terminated redox stars has been synthesized--by Negishi coupling, including hexa(ferrocenethynyl)benzene complexes, a dodecaferrocenyl star, and stars with extended rigid tethers--and fully characterized. Cyclic voltammetry (CV) studies of the parent complex hexa(ferrocenylethynyl)benzene, 1, show a single wave for the six-electron oxidation of 1 using Nn-Bu(4)PF(6) as the supporting electrolyte on a Pt anode in CH(2)Cl(2), whereas three distinct two-electron reversible CV waves are observed using Nn-Bu(4)BAr(F)(4) (Ar(F) = 3,5-C(6)H(3)-(CF(3))(2)). The CV of 1,3,5-tris(ferrocenylethynyl)benzene, 11, also shows only one wave for the three-electron transfer with Nn-Bu(4)PF(6) and three one-electron waves using Nn-Bu(4)BAr(F)(4). This confirms the lack of electronic communication between the ferrocenyl groups and a significant electrostatic effect among the oxidized ferrocenyl groups. This effect is not significant between para-ferrocenyl groups in 1,4-bis(ferrocenylethynyl)benzene for which only a single wave is observed even with Nn-Bu(4)BAr(F)(4) as the supporting electrolyte. The para-ferrocenyl substituents are quite independent, which explains that two para-ferrocenyl groups are oxidized at about the same potential in a single CV wave of 1. With the additional steric bulk introduced with a methyl substituent on the ferrocenyl group, however, even the para-methylferrocenyl groups are submitted to a small electrostatic effect splitting the six-electron transfer into six single-electron waves, probably because of the overall steroelectronic constraints. Contrary to 11, 1,3-bis(ferrocenylethynyl)benzene and related complexes with a third, different substituent in the remaining meta position different from a ferrocenylethynyl only show a single two-electron wave using Nn-Bu(4)BAr(F)(4), which is attributed to the transoïd conformation of the ferricinium groups minimizing the electrostatic effect. This shows that, in 11, it is the steric frustration that is responsible for the electrostatic effect, and the same occurs in 1. In several cases, ΔE(p) is much larger than the expected 60 mV value, characterizing a quasi-reversible (i.e., relatively slow) redox process. It is suggested that this slower electron transfer be attributed to conformational rearrangement of the ferrocenyl groups toward the transoïd position in the course of electron transfer. Thus both the thermodynamic and kinetic aspects of the electrostatic factor (isolated from the electronic factor), including the frustration effect, are characterized. The distinction between the electronic communication and through-space electrostatic effect was made possible in all of these complexes in which the absence of wave splitting using a strongly ion-pairing electrolyte shows the absence of significant electronic communication, and was confirmed by the new frustration phenomenon.
Collapse
Affiliation(s)
- Abdou K Diallo
- Institut des Sciences Moléculaires, UMR CNRS N°5255, Université Bordeaux 1, 33405 Talence Cedex, France
| | | | | | | |
Collapse
|
10
|
Absalon C. Riccardo Flamini and Pietro Traldi: Mass spectrometry in grape and wine chemistry. Anal Bioanal Chem 2010. [DOI: 10.1007/s00216-010-4306-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
11
|
Raynaud J, Absalon C, Gnanou Y, Taton D. N-heterocyclic carbene-induced zwitterionic ring-opening polymerization of ethylene oxide and direct synthesis of alpha,omega-difunctionalized poly(ethylene oxide)s and poly(ethylene oxide)-b-poly(epsilon-caprolactone) block copolymers. J Am Chem Soc 2010; 131:3201-9. [PMID: 19209910 DOI: 10.1021/ja809246f] [Citation(s) in RCA: 145] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
An N-heterocyclic carbene (NHC), namely, 1,3-bis-(diisopropyl)imidazol-2-ylidene (1), was demonstrated to bring about the metal-free ring-opening polymerization of ethylene oxide at 50 degrees C in dimethyl sulfoxide, in absence of any other reagents. Poly(ethylene oxide) (PEO) of polydispersities <1.2 and molar masses perfectly matching the [monomer]/[(1)] ratio could thus be obtained in quantitative yields, attesting to the controlled/living character of such carbene-initiated polymerizations. It is argued that (1) adds to ethylene oxide to form a zwitterionic species, namely 1,3-bis-(diisopropyl)imidazol-2-ylidinium alkoxide, that further propagates by a zwitterionic ring-opening polymerization (ZROP) mechanism. Through an appropriate choice of terminating agent NuH or NuSiMe(3) at the completion of the polymerization, a variety of end-functionalized PEO chains could be generated. In particular, alpha,omega-bis(hydroxy)-telechelic PEO, alpha-benzyl,omega-hydroxy, and alpha-azido,omega-hydroxy-difunctionalized PEOs were synthesized by NHC (1)-initiated ZROP, using H(2)O, PhCH(2)OH, and N(3)SiMe(3) as terminating agent, respectively. Characterization of these alpha,omega-difunctionalized PEOs by techniques such as (1)H NMR spectroscopy, MALDI-TOF spectrometry, and size exclusion chromatography confirmed the quantitative introduction of functional groups at both alpha and omega positions of the PEO chains and the formation of very narrow molar mass polymers. Finally, the synthesis of a poly(ethylene oxide)-b-poly(epsilon-caprolactone) diblock copolymer by sequential ZROP of the corresponding monomers was successfully achieved using (1) as organic initiator without isolation of the PEO block intermediate.
Collapse
Affiliation(s)
- Jean Raynaud
- Laboratoire de Chimie des Polymères Organiques (LCPO) - ENSCPB - CNRS, Université Bordeaux, 16 Av. Pey Berland, 330607 Pessac Cedex 9, France
| | | | | | | |
Collapse
|
12
|
Sen MY, Puskas JE, Dabney DE, Wesdemiotis C, Absalon C. Precision synthesis and characterization of thymine-functionalized polyisobutylene. ACTA ACUST UNITED AC 2010. [DOI: 10.1002/pola.24058] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
|
13
|
Sakouhi F, Absalon C, Kallel H, Boukhchina S. Comparative analysis of triacylglycerols from Olea europaea L. fruits using HPLC and MALDI-TOFMS. EUR J LIPID SCI TECH 2010. [DOI: 10.1002/ejlt.200900079] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
|
14
|
Sakouhi F, Boukhchina S, Absalon C, Fouquet E, Kallel H. Policosanol characterization and accumulation during ripening of Tunisian
Olea europaea
L. fruits. EUR J LIPID SCI TECH 2010. [DOI: 10.1002/ejlt.200900076] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
- Faouzi Sakouhi
- Laboratoire de Biochimie des Lipides, Département de Biologie, Faculté des Sciences de Tunis, El Manar, Tunisie
| | - Sadok Boukhchina
- Laboratoire de Biochimie des Lipides, Département de Biologie, Faculté des Sciences de Tunis, El Manar, Tunisie
| | - Christelle Absalon
- Centre d'Etude Structurale et d'Analyse des Molécules Organiques, Institut des Sciences Moléculaires, Université de Bordeaux, Bordeaux, France
| | - Eric Fouquet
- Centre d'Etude Structurale et d'Analyse des Molécules Organiques, Institut des Sciences Moléculaires, Université de Bordeaux, Bordeaux, France
| | - Habib Kallel
- Laboratoire de Biochimie des Lipides, Département de Biologie, Faculté des Sciences de Tunis, El Manar, Tunisie
| |
Collapse
|
15
|
Raynaud J, Absalon C, Gnanou Y, Taton D. N-Heterocyclic Carbene-Organocatalyzed Ring-Opening Polymerization of Ethylene Oxide in the Presence of Alcohols or Trimethylsilyl Nucleophiles as Chain Moderators for the Synthesis of α,ω-Heterodifunctionalized Poly(ethylene oxide)s. Macromolecules 2010. [DOI: 10.1021/ma902676r] [Citation(s) in RCA: 69] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jean Raynaud
- Laboratoire de Chimie des Polymères Organiques (LCPO) - ENSCBP - CNRS, Université Bordeaux, 16 Avenue Pey Berland, 33607 Pessac Cedex 9, France
| | - Christelle Absalon
- Institut des Sciences Moléculaires - CNRS, Université Bordeaux, 351 cours de la libération, 33605 Talence, France
| | - Yves Gnanou
- Laboratoire de Chimie des Polymères Organiques (LCPO) - ENSCBP - CNRS, Université Bordeaux, 16 Avenue Pey Berland, 33607 Pessac Cedex 9, France
| | - Daniel Taton
- Laboratoire de Chimie des Polymères Organiques (LCPO) - ENSCBP - CNRS, Université Bordeaux, 16 Avenue Pey Berland, 33607 Pessac Cedex 9, France
| |
Collapse
|
16
|
Sakouhi F, Absalon C, Sebei K, Fouquet E, Boukhchina S, Kallel H. Gas chromatographic–mass spectrometric characterisation of triterpene alcohols and monomethylsterols in developing Olea europaea L. fruits. Food Chem 2009. [DOI: 10.1016/j.foodchem.2009.01.094] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
17
|
Hiorns RC, Cloutet E, Ibarboure E, Vignau L, Lemaitre N, Guillerez S, Absalon C, Cramail H. Main-Chain Fullerene Polymers for Photovoltaic Devices. Macromolecules 2009. [DOI: 10.1021/ma900279a] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Roger C. Hiorns
- CNRS, Laboratoire de Chimie des Polymères Organiques, 16 avenue Pey Berland, Pessac Cedex, F33607, France, Laboratoire de Chimie des Polymères Organiques, Université de Bordeaux, ENSCPB, Pessac Cedex, F33607, France, Laboratoire de l’Intégration du Matériau au Système, Université de Bordeaux, CNRS UMR 5218, ENSCPB, Pessac Cedex, F33607, France, INES CEA RDI - DTS/LCS, Le Bourget du Lac, F73370, France, and Centre d’Etude Structurale et d’Analyse des Molécules, Université de Bordeaux, Organiques, Talence
| | - Eric Cloutet
- CNRS, Laboratoire de Chimie des Polymères Organiques, 16 avenue Pey Berland, Pessac Cedex, F33607, France, Laboratoire de Chimie des Polymères Organiques, Université de Bordeaux, ENSCPB, Pessac Cedex, F33607, France, Laboratoire de l’Intégration du Matériau au Système, Université de Bordeaux, CNRS UMR 5218, ENSCPB, Pessac Cedex, F33607, France, INES CEA RDI - DTS/LCS, Le Bourget du Lac, F73370, France, and Centre d’Etude Structurale et d’Analyse des Molécules, Université de Bordeaux, Organiques, Talence
| | - Emmanuel Ibarboure
- CNRS, Laboratoire de Chimie des Polymères Organiques, 16 avenue Pey Berland, Pessac Cedex, F33607, France, Laboratoire de Chimie des Polymères Organiques, Université de Bordeaux, ENSCPB, Pessac Cedex, F33607, France, Laboratoire de l’Intégration du Matériau au Système, Université de Bordeaux, CNRS UMR 5218, ENSCPB, Pessac Cedex, F33607, France, INES CEA RDI - DTS/LCS, Le Bourget du Lac, F73370, France, and Centre d’Etude Structurale et d’Analyse des Molécules, Université de Bordeaux, Organiques, Talence
| | - Laurence Vignau
- CNRS, Laboratoire de Chimie des Polymères Organiques, 16 avenue Pey Berland, Pessac Cedex, F33607, France, Laboratoire de Chimie des Polymères Organiques, Université de Bordeaux, ENSCPB, Pessac Cedex, F33607, France, Laboratoire de l’Intégration du Matériau au Système, Université de Bordeaux, CNRS UMR 5218, ENSCPB, Pessac Cedex, F33607, France, INES CEA RDI - DTS/LCS, Le Bourget du Lac, F73370, France, and Centre d’Etude Structurale et d’Analyse des Molécules, Université de Bordeaux, Organiques, Talence
| | - Noëlla Lemaitre
- CNRS, Laboratoire de Chimie des Polymères Organiques, 16 avenue Pey Berland, Pessac Cedex, F33607, France, Laboratoire de Chimie des Polymères Organiques, Université de Bordeaux, ENSCPB, Pessac Cedex, F33607, France, Laboratoire de l’Intégration du Matériau au Système, Université de Bordeaux, CNRS UMR 5218, ENSCPB, Pessac Cedex, F33607, France, INES CEA RDI - DTS/LCS, Le Bourget du Lac, F73370, France, and Centre d’Etude Structurale et d’Analyse des Molécules, Université de Bordeaux, Organiques, Talence
| | - Stéphane Guillerez
- CNRS, Laboratoire de Chimie des Polymères Organiques, 16 avenue Pey Berland, Pessac Cedex, F33607, France, Laboratoire de Chimie des Polymères Organiques, Université de Bordeaux, ENSCPB, Pessac Cedex, F33607, France, Laboratoire de l’Intégration du Matériau au Système, Université de Bordeaux, CNRS UMR 5218, ENSCPB, Pessac Cedex, F33607, France, INES CEA RDI - DTS/LCS, Le Bourget du Lac, F73370, France, and Centre d’Etude Structurale et d’Analyse des Molécules, Université de Bordeaux, Organiques, Talence
| | - Christelle Absalon
- CNRS, Laboratoire de Chimie des Polymères Organiques, 16 avenue Pey Berland, Pessac Cedex, F33607, France, Laboratoire de Chimie des Polymères Organiques, Université de Bordeaux, ENSCPB, Pessac Cedex, F33607, France, Laboratoire de l’Intégration du Matériau au Système, Université de Bordeaux, CNRS UMR 5218, ENSCPB, Pessac Cedex, F33607, France, INES CEA RDI - DTS/LCS, Le Bourget du Lac, F73370, France, and Centre d’Etude Structurale et d’Analyse des Molécules, Université de Bordeaux, Organiques, Talence
| | - Henri Cramail
- CNRS, Laboratoire de Chimie des Polymères Organiques, 16 avenue Pey Berland, Pessac Cedex, F33607, France, Laboratoire de Chimie des Polymères Organiques, Université de Bordeaux, ENSCPB, Pessac Cedex, F33607, France, Laboratoire de l’Intégration du Matériau au Système, Université de Bordeaux, CNRS UMR 5218, ENSCPB, Pessac Cedex, F33607, France, INES CEA RDI - DTS/LCS, Le Bourget du Lac, F73370, France, and Centre d’Etude Structurale et d’Analyse des Molécules, Université de Bordeaux, Organiques, Talence
| |
Collapse
|
18
|
Sakouhi F, Absalon C, Harrabi S, Vitry C, Sebei K, Boukhchina S, Fouquet E, Kallel H. Dynamic accumulation of 4-desmethylsterols and phytostanols during ripening of Tunisian Meski olives (Olea europea L.). Food Chem 2009. [DOI: 10.1016/j.foodchem.2008.06.068] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
|
19
|
Chodoeva A, Bosc JJ, Guillon J, Decendit A, Petraud M, Absalon C, Vitry C, Jarry C, Robert J. 8-O-Azeloyl-14-benzoylaconine: A new alkaloid from the roots of Aconitum karacolicum Rapcs and its antiproliferative activities. Bioorg Med Chem 2005; 13:6493-501. [PMID: 16081293 DOI: 10.1016/j.bmc.2005.07.015] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2005] [Revised: 06/29/2005] [Accepted: 07/01/2005] [Indexed: 10/25/2022]
Abstract
A new alkaloid of Aconitum karacolicum Rapcs, from the Ranunculaceae family, collected in Kirghizstan, was isolated from the roots of this plant, using a purification scheme based upon its in vitro antiproliferative properties against three human tumour cell lines in culture. Structural identification was performed using high resolution MS-MS mass spectrometry and (1)H, (13)C, 2D NOESY NMR spectroscopy analysis. This compound consists of a 14-benzoylaconine moiety substituted on C-8 by an azeloyl chain. It presents in vitro cytotoxicity with an IC(50) of about 10-20 microM, which warrants further investigation on its possible interest in cancer chemotherapy.
Collapse
Affiliation(s)
- Ainura Chodoeva
- Laboratoire de Pharmacologie des Médicaments Anticancéreux, Institut Bergonié, Bordeaux, France
| | | | | | | | | | | | | | | | | |
Collapse
|
20
|
Nonier MF, Absalon C, Vivas N, Vivas de Gaulejac N. Application of off-line size-exclusion chromatographic fractionation–matrix assisted laser desorption ionization time of flight mass spectrometry for proanthocyanidin characterization. J Chromatogr A 2004; 1033:291-7. [PMID: 15088750 DOI: 10.1016/j.chroma.2004.01.052] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
In this work, we wanted to devise a reliable method to characterize polymerized forms of tannins, their structural information and mass distribution. Size-exclusion chromatography (SEC) is a chromatographic technique used to determine molecular mass (weight) distributions of polymers. One important step in the data treatment is the modeling of the calibration curves. Polystyrenes (PS) are standards usually used because no commercial procyanidin (PC) standards are available. An off-line coupling of SEC and MALDI was carried out to measure differences between polystyrenes and procyanidins. Thus, a new calibration curve was established; from 1000 to 8000 Da, there is a good correlation between the MALDI and PS calibration curves, in this field the PS calibration is correct and enables true mass determination. For masses above 8000 Da, PS calibration overestimates the real molecular weight of PC, overestimation of 53%. And for masses below 1000 Da, PS calibration underestimates their real molecular weight (10-15%). This means that to truly characterize PC, calibration based on PC standards is required.
Collapse
Affiliation(s)
- M F Nonier
- CESAMO (Centre d'Etude Structurale et d'Analyse des Molécules Organiques), Université Bordeaux 1, 351 Cours de la Libération, F-33405 Talence, France.
| | | | | | | |
Collapse
|
21
|
McClenaghan ND, Absalon C, Bassani DM. Facile Synthesis of a Fullerene-Barbituric Acid Derivative and Supramolecular Catalysis of Its Photoinduced Dimerization. J Am Chem Soc 2003; 125:13004-5. [PMID: 14570455 DOI: 10.1021/ja0372098] [Citation(s) in RCA: 66] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A straightforward synthesis of a fullerene derivative appended with a barbituric acid molecular recognition motif is described. The presence of two nonself-complementary hydrogen-bonding sites is shown to be conducive to the construction of supramolecular assemblies. In the presence of a melamine derivative possessing complementary hydrogen-bonding sites, enhanced efficiency toward photodimerization of the fullerene moiety is observed. This represents the first example of intermolecular photodimerization of a fullerene derivative in homogeneous solution, made possible by the formation of supramolecular assemblies in which the fullerenes are maintained in close proximity.
Collapse
Affiliation(s)
- Nathan D McClenaghan
- Laboratoire de Chimie Organique et Organométallique, CNRS UMR 5802 Université Bordeaux I, 33405 Talence, France
| | | | | |
Collapse
|