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Trellu H, Le Scornec J, Leray N, Moreau C, Villares A, Cathala B, Guiffard B. Flexoelectric and piezoelectric effects in micro- and nanocellulose films. Carbohydr Polym 2023; 321:121305. [PMID: 37739535 DOI: 10.1016/j.carbpol.2023.121305] [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: 05/30/2023] [Revised: 07/20/2023] [Accepted: 08/14/2023] [Indexed: 09/24/2023]
Abstract
In this work, we evaluated the flexoelectric and piezoelectric contributions to the overall macroscopic polarization in cellulose films. To this end, the flexoelectric μ31 and transverse effective piezoelectric e31,f coefficients of cellulose films were determined using cantilever beam bending. The experiments were based on theoretical developments allowing to separate the flexoelectric from the piezoelectric contribution, represented by an effective flexoelectric coefficient, μeff, depending on both e31,f and μ31. Five free-standing and stainless steel/cellulose bilayer films were prepared from cellulose showing different morphologies and surface charge degrees: two almost neutral cellulose microfibers (CMF) and three (2,2,6,6-tetramethylpiperidin-1-yl)oxyl (TEMPO)-oxidized cellulose micro- (TCMF) and nanofibers (TCNF) bearing negative charged groups on the surface. The dielectric properties of the films indicated a low dielectric constant for unmodified CMF, and a huge increase for TEMPO-oxidized samples, which were up to 9 times higher than poly(vinylidene fluoride)-based polymers. TEMPO-oxidized cellulose films exhibited the largest flexoelectric coefficients (almost 7 times higher than those of synthetic polymer dielectrics), which evidenced that the presence of polar groups and surface charge boosted both flexoelectricity and piezoelectricity in unpoled cellulose films. These findings pave the way towards sustainable cellulose-based curvature sensors with large effective flexoelectric coefficients, without the need of preliminary energy consuming poling step.
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Affiliation(s)
- Hanna Trellu
- Nantes Univ, CNRS, IETR UMR 6164, F-44000 Nantes, France; UR1268 BIA, INRAE, F-44316 Nantes, France
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Lopes da Costa L, Moreau C, Lourdin D, Cathala B, Villares A. Unraveling the control of reversibility for actuators based on cellulose nanofibers. Carbohydr Polym 2023; 314:120951. [PMID: 37173018 DOI: 10.1016/j.carbpol.2023.120951] [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: 01/20/2023] [Revised: 04/14/2023] [Accepted: 04/23/2023] [Indexed: 05/15/2023]
Abstract
In this work, we have prepared cellulose-based actuators taking advantage of the pH-sensitive solubility of chitosan (CH) and the mechanical strength of CNFs. Bilayer films were prepared by vacuum filtration inspired by plant structures that exhibit reversible deformation under pH changes. The presence of CH in one of the layers led to asymmetric swelling at low pH, thanks to the electrostatic repulsion between charged amino groups of CH, and the subsequent twisting with the CH layer on the outside. Reversibility was achieved by substituting pristine CNFs with carboxymethylated CNFs (CMCNFs), that are charged at high pH and thus competed with the effects of amino groups. Swelling and mechanical properties of layers under pH changes were studied by gravimetry and dynamic mechanical analysis (DMA) to quantify the contribution of chitosan and the modified CNFs on the reversibility control. This work evidenced the key role of surface charge and layer stiffness to achieve reversibility. Bending was triggered by the different water uptake of each layer, and shape recovery was achieved when the shrunk layer shower higher rigidity than the swollen layer.
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Chemin M, Kansou K, Cahier K, Grellier M, Grisel S, Novales B, Moreau C, Villares A, Berrin JG, Cathala B. Optimized Lytic Polysaccharide Monooxygenase Action Increases Fiber Accessibility and Fibrillation by Releasing Tension Stress in Cellulose Cotton Fibers. Biomacromolecules 2023. [PMID: 37327397 DOI: 10.1021/acs.biomac.3c00303] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Lytic polysaccharide monooxygenase (LPMO) enzymes have recently shaken up our knowledge of the enzymatic degradation of biopolymers and cellulose in particular. This unique class of metalloenzymes cleaves cellulose and other recalcitrant polysaccharides using an oxidative mechanism. Despite their potential in biomass saccharification and cellulose fibrillation, the detailed mode of action of LPMOs at the surface of cellulose fibers still remains poorly understood and highly challenging to investigate. In this study, we first determined the optimal parameters (temperature, pH, enzyme concentration, and pulp consistency) of LPMO action on the cellulose fibers by analyzing the changes in molar mass distribution of solubilized fibers using high performance size exclusion chromatography (HPSEC). Using an experimental design approach with a fungal LPMO from the AA9 family (PaLPMO9H) and cotton fibers, we revealed a maximum decrease in molar mass at 26.6 °C and pH 5.5, with 1.6% w/w enzyme loading in dilute cellulose dispersions (100 mg of cellulose at 0.5% w/v). These optimal conditions were used to further investigate the effect of PaLPMO9H on the cellulosic fiber structure. Direct visualization of the fiber surface by scanning electron microscopy (SEM) revealed that PaLPMO9H created cracks on the cellulose surface while it attacked tension regions that triggered the rearrangement of cellulose chains. Solid-state NMR indicated that PaLPMO9H increased the lateral fibril dimension and created novel accessible surfaces. This study confirms the LPMO-driven disruption of cellulose fibers and extends our knowledge of the mechanism underlying such modifications. We hypothesize that the oxidative cleavage at the surface of the fibers releases the tension stress with loosening of the fiber structure and peeling of the surface, thereby increasing the accessibility and facilitating fibrillation.
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Affiliation(s)
| | | | | | | | - Sacha Grisel
- INRAE, Aix Marseille Univ., UMR BBF, F-13009 Marseille, France
- INRAE, Aix Marseille Univ., 3PE platform, F-13009 Marseille, France
| | - Bruno Novales
- INRAE, BIBS Facility, PROBE Infrastructure, F-44316 Nantes, France
| | | | | | - Jean-Guy Berrin
- INRAE, Aix Marseille Univ., UMR BBF, F-13009 Marseille, France
- INRAE, Aix Marseille Univ., 3PE platform, F-13009 Marseille, France
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Leray N, Talantikite M, Villares A, Cathala B. Xyloglucan-cellulose nanocrystal-chitosan double network hydrogels for soft actuators. Carbohydr Polym 2022; 293:119753. [DOI: 10.1016/j.carbpol.2022.119753] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2022] [Revised: 06/11/2022] [Accepted: 06/15/2022] [Indexed: 11/02/2022]
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Graña-López L, Pérez-Ramos T, Villares A, Vázquez-Caruncho M. Tratamiento con crioablación de lesiones de mama: nuestra experiencia. Radiología 2022. [DOI: 10.1016/j.rx.2021.09.008] [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: 10/19/2022]
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Chemin M, Moreau C, Cathala B, Villares A. Divergent growth of poly(amidoamine) dendrimer-like branched polymers at the reducing end of cellulose nanocrystals. Carbohydr Polym 2022; 279:119008. [PMID: 34980353 DOI: 10.1016/j.carbpol.2021.119008] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [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: 07/16/2021] [Revised: 11/25/2021] [Accepted: 12/09/2021] [Indexed: 11/26/2022]
Abstract
This paper presents the growth of dendritic polymers at the reducing ends of cellulose nanocrystals by the "grafting from" approach. We took advantage of the chemically differentiated ends of cellulose nanocrystals to specifically synthesize dendrimers at their reducing end by the divergent approach. We used acid-amine coupling reactions in aqueous media to synthesize the carboxylic acid- or amine-terminated poly(amidoamine) dendrimers. The growth of dendrimer generations was monitored by UV and FTIR spectroscopies, and we successfully introduced up to 4 generations. The dendrimer growth at reducing ends was demonstrated by the nanocrystal adsorption driven by the peripheral amino groups onto gold surfaces. Hence, the results from quartz crystal microbalance with dissipation (QCM-D) pointed to a rather upright orientation of the dendrimer-modified cellulose nanocrystals. As the generation increased, the adsorbed layers appeared to be more flexible, which demonstrated that the functionality at the reducing end can successfully tune the properties of cellulose nanocrystals.
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Chemin M, Moreau C, Cathala B, Villares A. Asymmetric modification of cellulose nanocrystals with PAMAM dendrimers for the preparation of pH-responsive hairy surfaces. Carbohydr Polym 2020; 249:116779. [DOI: 10.1016/j.carbpol.2020.116779] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2020] [Revised: 06/02/2020] [Accepted: 07/14/2020] [Indexed: 12/18/2022]
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Abstract
The preparation of microcapsules composed by natural materials have received great attention, as they represent promising systems for the fabrication of micro-containers for controlled loading and release of active compounds, and for other applications. Using polysaccharides as the main materials is receiving increasing interest, as they constitute the main components of the plant cell wall, which represent an ideal platform to mimic for creating biocompatible systems with specific responsive properties. Several researchers have recently described methods for the preparation of microcapsules with various sizes and properties using cell wall polysaccharide nanomaterials. Researchers have focused mostly in using cellulose nanomaterials as structural components in a bio-mimetic approach, as cellulose constitutes the main structural component of the plant cell wall. In this review, we describe the microcapsules systems presented in the literature, focusing on the works where polysaccharide nanomaterials were used as the main structural components. We present the methods and the principles behind the preparation of these systems, and the interactions involved in stabilizing the structures. We show the specific and stimuli-responsive properties of the reported microcapsules, and we describe how these characteristics can be exploited for specific applications.
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Chemin M, Beaumal B, Cathala B, Villares A. pH-Responsive Properties of Asymmetric Nanopapers of Nanofibrillated Cellulose. Nanomaterials (Basel) 2020; 10:E1380. [PMID: 32679783 PMCID: PMC7408521 DOI: 10.3390/nano10071380] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/16/2020] [Revised: 07/09/2020] [Accepted: 07/10/2020] [Indexed: 11/26/2022]
Abstract
Inspired by plant movements driven by the arrangement of cellulose, we have fabricated nanopapers of nanofibrillated cellulose (NFC) showing actuation under pH changes. Bending was achieved by a concentration gradient of charged groups along the film thickness. Hence, the resulting nanopapers contained higher concentration of charged groups on one side of the film than on the opposite side, so that pH changes resulted in charge-dependent asymmetric deprotonation of the two layers. Electrostatic repulsions separate the nanofibers in the nanopaper, thus facilitating an asymmetric swelling and the subsequent expanding that results in bending. Nanofibrillated cellulose was modified by 2,2,6,6-tetramethylpiperidin-1-yl)oxyl radical (TEMPO) oxidation at two reaction times to get different surface concentrations of carboxylic acid groups. TEMPO-oxidized NFC was further chemically transformed into amine-modified NFC by amidation. The formation of graded nanopapers was accomplished by successive filtration of NFC dispersions with varying charge nature and/or concentration. The extent of bending was controlled by the charge concentration and the nanopaper thickness. The direction of bending was tuned by the layer composition (carboxylic acid or amine groups). In all cases, a steady-state was achieved within less than 25 s. This work opens new routes for the use of cellulosic materials as actuators.
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Affiliation(s)
| | | | | | - Ana Villares
- French National Research Institute for Agriculture, Food and Environment (INRAE), UR Biopolymer, Interactions, Assemblies (BIA), F-44316 Nantes, France; (M.C.); (B.B.); (B.C.)
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Jaafar Z, Mazeau K, Boissière A, Le Gall S, Villares A, Vigouroux J, Beury N, Moreau C, Lahaye M, Cathala B. Meaning of xylan acetylation on xylan-cellulose interactions: A quartz crystal microbalance with dissipation (QCM-D) and molecular dynamic study. Carbohydr Polym 2019; 226:115315. [DOI: 10.1016/j.carbpol.2019.115315] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2019] [Revised: 08/27/2019] [Accepted: 09/09/2019] [Indexed: 10/26/2022]
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Sardón O, Torrent-Vernetta A, Rovira-Amigo S, Dishop MK, Ferreres JC, Navarro A, Corcuera P, Korta-Murua J, Peña PG, Pérez-Belmonte E, Villares A, Camats N, Fernández-Cancio M, Carrascosa A, Pérez-Yarza EG, Moreno-Galdó A. Isolated pulmonary interstitial glycogenosis associated with alveolar growth abnormalities: A long-term follow-up study. Pediatr Pulmonol 2019; 54:837-846. [PMID: 30912317 DOI: 10.1002/ppul.24324] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/19/2018] [Revised: 02/17/2019] [Accepted: 03/08/2019] [Indexed: 01/19/2023]
Abstract
INTRODUCTION Pulmonary interstitial glycogenosis (PIG) is a rare infant interstitial lung disease characterized by an increase in the number of interstitial mesenchymal cells, presenting as enhanced cytoplasmic glycogen, and is considered to represent the expression of an underlying lung development disorder. METHODS This study describes the clinical, radiological, and functional characteristics and long-term outcomes (median 12 years) of nine infants diagnosed with isolated PIG associated with alveolar simplification in the absence of other diseases. RESULTS All patients presented with tachypnea. Additionally, seven patients had breathing difficulties and hypoxemia. Abnormalities in chest-computerized tomography (CT) with a pattern of ground-glass opacity, septal thickening, and air trapping were observed in all individuals, with images suggesting abnormal alveolar growth (parenchymal bands and architectural distortion). All lung biopsies showed alveolar simplification associated with an increased number of interstitial cells, which appeared as accumulated cytoplasmic glycogen. In the follow-up, all patients were asymptomatic. The respiratory function test was normal in only two patients. Five children showed an obstructive pattern, and two children showed a restrictive pattern. Chest-CT, performed after an average of 6.5 years since the initial investigation, revealed a partial improvement of the ground-glass opacity pattern; however, relevant alterations persisted. CONCLUSION Although the patients with PIG in the absence of other associated pathologies had a good clinical outcome, significant radiographic alterations and sequelae in lung function were still observed after a median follow-up of 12 years, suggesting that PIG is a marker of some other persistent abnormalities in lung growth, which have effects beyond the symptomatic period.
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Affiliation(s)
- Olaia Sardón
- Division of Pediatric Respiratory Medicine, Hospital Universitario Donostia, San Sebastián, Spain.,Department of Pediatrics, University of the Basque Country (UPV/EHU), San Sebastián, Spain
| | - Alba Torrent-Vernetta
- Pediatric Allergy, Pulmonary and Cystic Fibrosis Section, Hospital Universitari Vall d'Hebron, Barcelona, Spain.,Departament of Pediatrics, Obstetrics, Gynecology, Preventive Medicine and Public Health, Universitat Autònoma de Barcelona, Barcelona, Spain
| | - Sandra Rovira-Amigo
- Pediatric Allergy, Pulmonary and Cystic Fibrosis Section, Hospital Universitari Vall d'Hebron, Barcelona, Spain.,Departament of Pediatrics, Obstetrics, Gynecology, Preventive Medicine and Public Health, Universitat Autònoma de Barcelona, Barcelona, Spain
| | - Megan K Dishop
- Pathology and Laboratory Medicine, Children's Hospitals and Clinics of Minnesota, Minneapolis-St. Paul, Minnesota.,Department of Pediatrics, University of Colorado School of Medicine, Colorado
| | | | - Alexandra Navarro
- Pathology Department, Hospital Universitari Vall d'Hebron, Barcelona, Spain
| | - Paula Corcuera
- Division of Pediatric Respiratory Medicine, Hospital Universitario Donostia, San Sebastián, Spain.,Department of Pediatrics, University of the Basque Country (UPV/EHU), San Sebastián, Spain
| | - Javier Korta-Murua
- Division of Pediatric Respiratory Medicine, Hospital Universitario Donostia, San Sebastián, Spain.,Department of Pediatrics, University of the Basque Country (UPV/EHU), San Sebastián, Spain
| | - Pilar García Peña
- Pediatric Radiology Department, Hospital Universitari Vall d'Hebron, Barcelona, Spain
| | | | - Ana Villares
- Department of Pediatrics, Hospital de Ourense, Ourense, Spain
| | - Núria Camats
- Growth and Development Research Unit, Vall d'Hebron Research Institute (VHIR), Barcelona, Spain.,Center for Biomedical Research on Rare Diseases (CIBERER), Instituto de Salud Carlos III, Spain
| | - Mónica Fernández-Cancio
- Growth and Development Research Unit, Vall d'Hebron Research Institute (VHIR), Barcelona, Spain.,Center for Biomedical Research on Rare Diseases (CIBERER), Instituto de Salud Carlos III, Spain
| | - Antonio Carrascosa
- Departament of Pediatrics, Obstetrics, Gynecology, Preventive Medicine and Public Health, Universitat Autònoma de Barcelona, Barcelona, Spain.,Growth and Development Research Unit, Vall d'Hebron Research Institute (VHIR), Barcelona, Spain.,Center for Biomedical Research on Rare Diseases (CIBERER), Instituto de Salud Carlos III, Spain.,Department of Pediatrics, Hospital Universitari Vall d'Hebron, Barcelona, Spain
| | - Eduardo G Pérez-Yarza
- Division of Pediatric Respiratory Medicine, Hospital Universitario Donostia, San Sebastián, Spain.,Department of Pediatrics, University of the Basque Country (UPV/EHU), San Sebastián, Spain.,Biomedical Research Centre Network for Respiratory Diseases (CIBERES), San Sebastián, Spain
| | - Antonio Moreno-Galdó
- Pediatric Allergy, Pulmonary and Cystic Fibrosis Section, Hospital Universitari Vall d'Hebron, Barcelona, Spain.,Departament of Pediatrics, Obstetrics, Gynecology, Preventive Medicine and Public Health, Universitat Autònoma de Barcelona, Barcelona, Spain.,Growth and Development Research Unit, Vall d'Hebron Research Institute (VHIR), Barcelona, Spain.,Center for Biomedical Research on Rare Diseases (CIBERER), Instituto de Salud Carlos III, Spain
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Moreau C, Tapin-Lingua S, Grisel S, Gimbert I, Le Gall S, Meyer V, Petit-Conil M, Berrin JG, Cathala B, Villares A. Lytic polysaccharide monooxygenases (LPMOs) facilitate cellulose nanofibrils production. Biotechnol Biofuels 2019; 12:156. [PMID: 31249619 PMCID: PMC6589874 DOI: 10.1186/s13068-019-1501-0] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2019] [Accepted: 06/15/2019] [Indexed: 05/06/2023]
Abstract
BACKGROUND Lytic polysaccharide monooxygenases (LPMOs) are copper-dependent enzymes that cleave polysaccharides through an oxidative mechanism. These enzymes are major contributors to the recycling of carbon in nature and are currently used in the biorefinery industry. LPMOs are commonly used in synergy with cellulases to enhance biomass deconstruction. However, there are few examples of the use of monocomponent LPMOs as a tool for cellulose fibrillation. In this work, we took advantage of the LPMO action to facilitate disruption of wood cellulose fibers as a strategy to produce nanofibrillated cellulose (NFC). RESULTS The fungal LPMO from AA9 family (PaLPMO9E) was used in this study as it displays high specificity toward cellulose and its recombinant production in bioreactor is easily upscalable. The treatment of birchwood fibers with PaLPMO9E resulted in the release of a mixture of C1-oxidized oligosaccharides without any apparent modification in fiber morphology and dimensions. The subsequent mechanical shearing disintegrated the LPMO-pretreated samples yielding nanoscale cellulose elements. Their gel-like aspect and nanometric dimensions demonstrated that LPMOs disrupt the cellulose structure and facilitate the production of NFC. CONCLUSIONS This study demonstrates the potential use of LPMOs as a pretreatment in the NFC production process. LPMOs weaken fiber cohesion and facilitate fiber disruption while maintaining the crystallinity of cellulose.
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Affiliation(s)
- Céline Moreau
- UR1268 Biopolymères Interactions Assemblages, INRA, 44316 Nantes, France
| | - Sandra Tapin-Lingua
- InTechFibres Division, FCBA, Domaine Universitaire, CS 90252, 39044 Grenoble Cedex 9, France
| | - Sacha Grisel
- Biodiversité et Biotechnologie Fongiques, INRA, Aix Marseille University, UMR1163, 13009 Marseille, France
| | - Isabelle Gimbert
- Biodiversité et Biotechnologie Fongiques, INRA, Aix Marseille University, UMR1163, 13009 Marseille, France
| | - Sophie Le Gall
- UR1268 Biopolymères Interactions Assemblages, INRA, 44316 Nantes, France
| | - Valérie Meyer
- CTP, Domaine Universitaire, CS 90252, 39044 Grenoble Cedex 9, France
| | | | - Jean-Guy Berrin
- Biodiversité et Biotechnologie Fongiques, INRA, Aix Marseille University, UMR1163, 13009 Marseille, France
| | - Bernard Cathala
- UR1268 Biopolymères Interactions Assemblages, INRA, 44316 Nantes, France
| | - Ana Villares
- UR1268 Biopolymères Interactions Assemblages, INRA, 44316 Nantes, France
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Chalak A, Villares A, Moreau C, Haon M, Grisel S, d’Orlando A, Herpoël-Gimbert I, Labourel A, Cathala B, Berrin JG. Influence of the carbohydrate-binding module on the activity of a fungal AA9 lytic polysaccharide monooxygenase on cellulosic substrates. Biotechnol Biofuels 2019; 12:206. [PMID: 31508147 PMCID: PMC6721207 DOI: 10.1186/s13068-019-1548-y] [Citation(s) in RCA: 51] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/10/2019] [Accepted: 08/24/2019] [Indexed: 05/12/2023]
Abstract
BACKGROUND Cellulose-active lytic polysaccharide monooxygenases (LPMOs) secreted by filamentous fungi play a key role in the degradation of recalcitrant lignocellulosic biomass. They can occur as multidomain proteins fused to a carbohydrate-binding module (CBM). From a biotech perspective, LPMOs are promising innovative tools for producing nanocelluloses and biofuels, but their direct action on cellulosic substrates is not fully understood. RESULTS In this study, we probed the role of the CBM from family 1 (CBM1) appended to the LPMO9H from Podospora anserina (PaLPMO9H) using model cellulosic substrates. Deletion of the CBM1 weakened the binding to cellulose nanofibrils, amorphous and crystalline cellulose. Although the release of soluble sugars from cellulose was drastically reduced under standard conditions, the truncated LPMO retained some activity on soluble oligosaccharides. The cellulolytic action of the truncated LPMO was demonstrated using synergy experiments with a cellobiohydrolase (CBH). The truncated LPMO was still able to improve the efficiency of the CBH on cellulose nanofibrils in the same range as the full-length LPMO. Increasing the substrate concentration enhanced the performance of PaLPMO9H without CBM in terms of product release. Interestingly, removing the CBM also altered the regioselectivity of PaLPMO9H, significantly increasing cleavage at the C1 position. Analysis of the insoluble fraction of cellulosic substrates evaluated by optical and atomic force microscopy confirmed that the CBM1 module was not strictly required to promote disruption of the cellulose network. CONCLUSIONS Absence of the CBM1 does not preclude the activity of the LPMO on cellulose but its presence has an important role in driving the enzyme to the substrate and releasing more soluble sugars (both oxidized and non-oxidized), thus facilitating the detection of LPMO activity at low substrate concentration. These results provide insights into the mechanism of action of fungal LPMOs on cellulose to produce nanocelluloses and biofuels.
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Affiliation(s)
- Amani Chalak
- Biopolymères Interactions Assemblages, INRA, Nantes, France
- Biodiversité et Biotechnologie Fongiques, UMR1163, INRA, Aix Marseille Université, Marseille, France
| | - Ana Villares
- Biopolymères Interactions Assemblages, INRA, Nantes, France
| | - Celine Moreau
- Biopolymères Interactions Assemblages, INRA, Nantes, France
| | - Mireille Haon
- Biodiversité et Biotechnologie Fongiques, UMR1163, INRA, Aix Marseille Université, Marseille, France
| | - Sacha Grisel
- Biodiversité et Biotechnologie Fongiques, UMR1163, INRA, Aix Marseille Université, Marseille, France
| | | | - Isabelle Herpoël-Gimbert
- Biodiversité et Biotechnologie Fongiques, UMR1163, INRA, Aix Marseille Université, Marseille, France
| | - Aurore Labourel
- Biodiversité et Biotechnologie Fongiques, UMR1163, INRA, Aix Marseille Université, Marseille, France
| | | | - Jean-Guy Berrin
- Biodiversité et Biotechnologie Fongiques, UMR1163, INRA, Aix Marseille Université, Marseille, France
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Villares A, Moreau C, Cathala B. Star-like Supramolecular Complexes of Reducing-End-Functionalized Cellulose Nanocrystals. ACS Omega 2018; 3:16203-16211. [PMID: 31458256 PMCID: PMC6643679 DOI: 10.1021/acsomega.8b02559] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/28/2018] [Accepted: 11/16/2018] [Indexed: 05/27/2023]
Abstract
In this work, we take advantage of the parallel organization of cellulose chains in cellulose I yielding an inherent chemical asymmetry of cellulose nanocrystals, i.e., reducing vs nonreducing end, to selectively modify only one end of these rigid rodlike crystals to be used as a linking point for the formation of supramolecular structures. We have prepared biotin-functionalized tunicate cellulose nanocrystals at the reducing end capable of forming new complex supramolecular hierarchies by the addition of the protein streptavidin. Biotin-streptavidin coupling was chosen because streptavidin has a multivalency of four and the biotin-streptavidin bond is known to be highly selective and stable. Hence, streptavidin molecules would link up to four cellulose nanocrystals through their biotin-modified reducing end. Two biotin derivatives were studied, consisting of an anchoring group, i.e., amine or hydrazine; the biotin moiety; and the linker between them. Results show that the length of the linker significantly affects the bond between the biotinylated cellulose nanocrystals and streptavidin, and a certain chain length is necessary for the supramolecular assembly of several cellulose nanocrystals by streptavidin.
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Affiliation(s)
- Ana Villares
- INRA, UR1268 Biopolymères
Interactions Assemblages, Rue de la Géraudière, 44316 Nantes, France
| | - Céline Moreau
- INRA, UR1268 Biopolymères
Interactions Assemblages, Rue de la Géraudière, 44316 Nantes, France
| | - Bernard Cathala
- INRA, UR1268 Biopolymères
Interactions Assemblages, Rue de la Géraudière, 44316 Nantes, France
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Dudefoi W, Villares A, Peyron S, Moreau C, Ropers MH, Gontard N, Cathala B. Nanoscience and nanotechnologies for biobased materials, packaging and food applications: New opportunities and concerns. INNOV FOOD SCI EMERG 2018. [DOI: 10.1016/j.ifset.2017.09.007] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Villares A, Bizot H, Moreau C, Rolland-Sabaté A, Cathala B. Effect of xyloglucan molar mass on its assembly onto the cellulose surface and its enzymatic susceptibility. Carbohydr Polym 2017; 157:1105-1112. [DOI: 10.1016/j.carbpol.2016.10.072] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2016] [Revised: 10/21/2016] [Accepted: 10/24/2016] [Indexed: 11/16/2022]
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Villares A, Moreau C, Bennati-Granier C, Garajova S, Foucat L, Falourd X, Saake B, Berrin JG, Cathala B. Lytic polysaccharide monooxygenases disrupt the cellulose fibers structure. Sci Rep 2017; 7:40262. [PMID: 28071716 PMCID: PMC5223172 DOI: 10.1038/srep40262] [Citation(s) in RCA: 108] [Impact Index Per Article: 15.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2016] [Accepted: 12/05/2016] [Indexed: 12/28/2022] Open
Abstract
Lytic polysaccharide monooxygenases (LPMOs) are a class of powerful oxidative enzymes that breakdown recalcitrant polysaccharides such as cellulose. Here we investigate the action of LPMOs on cellulose fibers. After enzymatic treatment and dispersion, LPMO-treated fibers show intense fibrillation. Cellulose structure modifications visualized at different scales indicate that LPMO creates nicking points that trigger the disintegration of the cellulose fibrillar structure with rupture of chains and release of elementary nanofibrils. Investigation of LPMO action using solid-state NMR provides direct evidence of modification of accessible and inaccessible surfaces surrounding the crystalline core of the fibrils. The chains breakage likely induces modifications of the cellulose network and weakens fibers cohesion promoting their disruption. Besides the formation of new initiation sites for conventional cellulases, this work provides the first evidence of the direct oxidative action of LPMOs with the mechanical weakening of the cellulose ultrastructure. LPMOs can be viewed as promising biocatalysts for enzymatic modification or degradation of cellulose fibers.
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Affiliation(s)
| | | | - Chloé Bennati-Granier
- Biodiversité et Biotechnologie Fongiques, INRA, Aix Marseille Univ, UMR1163, 13009, Marseille, France
| | - Sona Garajova
- Biodiversité et Biotechnologie Fongiques, INRA, Aix Marseille Univ, UMR1163, 13009, Marseille, France
| | | | | | - Bodo Saake
- Chemical Wood Technology, University of Hamburg, Leuschnerstraße 91b, 21031 Hamburg, Germany
| | - Jean-Guy Berrin
- Biodiversité et Biotechnologie Fongiques, INRA, Aix Marseille Univ, UMR1163, 13009, Marseille, France
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Ladevèze S, Haon M, Villares A, Cathala B, Grisel S, Herpoël-Gimbert I, Henrissat B, Berrin JG. The yeast Geotrichum candidum encodes functional lytic polysaccharide monooxygenases. Biotechnol Biofuels 2017; 10:215. [PMID: 28919928 PMCID: PMC5596469 DOI: 10.1186/s13068-017-0903-0] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/25/2017] [Accepted: 09/07/2017] [Indexed: 05/08/2023]
Abstract
BACKGROUND Lytic polysaccharide monooxygenases (LPMOs) are a class of powerful oxidative enzymes that have revolutionized our understanding of lignocellulose degradation. Fungal LPMOs of the AA9 family target cellulose and hemicelluloses. AA9 LPMO-coding genes have been identified across a wide range of fungal saprotrophs (Ascomycotina, Basidiomycotina, etc.), but so far they have not been found in more basal lineages. Recent genome analysis of the yeast Geotrichum candidum (Saccharomycotina) revealed the presence of several LPMO genes, which belong to the AA9 family. RESULTS In this study, three AA9 LPMOs from G. candidum were successfully produced and biochemically characterized. The use of native signal peptides was well suited to ensure correct processing and high recombinant production of GcLPMO9A, GcLPMO9B, and GcLPMO9C in Pichia pastoris. We show that GcLPMO9A and GcLPMO9B were both active on cellulose and xyloglucan, releasing a mixture of soluble C1- and C4-oxidized oligosaccharides from cellulose. All three enzymes disrupted cellulose fibers and significantly improved the saccharification of pretreated lignocellulosic biomass upon addition to a commercial cellulase cocktail. CONCLUSIONS The unique enzymatic arsenal of G. candidum compared to other yeasts could be beneficial for plant cell wall decomposition in a saprophytic or pathogenic context. From a biotechnological point of view, G. candidum LPMOs are promising candidates to further enhance enzyme cocktails used in biorefineries such as consolidated bioprocessing.
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Affiliation(s)
- Simon Ladevèze
- INRA, Aix Marseille University BBF, Biodiversité et Biotechnologie Fongiques, 13288 Marseille, France
| | - Mireille Haon
- INRA, Aix Marseille University BBF, Biodiversité et Biotechnologie Fongiques, 13288 Marseille, France
| | - Ana Villares
- INRA, UR1268 Biopolymères Interactions Assemblages, 44316 Nantes, France
| | - Bernard Cathala
- INRA, UR1268 Biopolymères Interactions Assemblages, 44316 Nantes, France
| | - Sacha Grisel
- INRA, Aix Marseille University BBF, Biodiversité et Biotechnologie Fongiques, 13288 Marseille, France
| | - Isabelle Herpoël-Gimbert
- INRA, Aix Marseille University BBF, Biodiversité et Biotechnologie Fongiques, 13288 Marseille, France
| | - Bernard Henrissat
- Architecture et Fonction des Macromolécules Biologiques, UMR7857, CNRS, Aix-Marseille University, 13288 Marseille, France
- USC1408, Architecture et Fonction des Macromolécules Biologiques, INRA, 13288 Marseille, France
- Department of Biological Sciences, King Abdulaziz University, Jedda, 21589 Saudi Arabia
| | - Jean-Guy Berrin
- INRA, Aix Marseille University BBF, Biodiversité et Biotechnologie Fongiques, 13288 Marseille, France
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Villares A, Moreau C, Dammak A, Capron I, Cathala B. Kinetic aspects of the adsorption of xyloglucan onto cellulose nanocrystals. Soft Matter 2015; 11:6472-81. [PMID: 26179417 DOI: 10.1039/c5sm01413a] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
In this work, the adsorption of a neutral flexible polysaccharide, xyloglucan (XG), onto thin cellulose nanocrystal (CNC) surfaces has been investigated to get more insight into the CNC-XG association. Gold-coated quartz crystals were spin-coated with one layer of CNC, and XG adsorption was monitored in situ using a quartz crystal microbalance with dissipation (QCM-D). The adsorption of XG under flow at different concentrations did not result in the same surface concentration, which evidenced a kinetically controlled process. In an attempt to describe the binding of XG to CNCs, adsorption data were fitted to a kinetic model comprising a contribution from XG adsorption onto uncovered CNC surfaces and a contribution from XG adsorption after rearrangement. Kinetic studies evidenced the presence of two adsorption regimes as a function of XG concentration. For low XG concentrations, the kinetic constant for chain rearrangement is comparable to the kinetic constant for adsorption. This fact implies a rearrangement and alignment of XG molecules on CNCs. Differently, for higher XG concentrations, the kinetic constant related to the conformational rearrangement decreases, indicating that XG molecules have no time to laterally rearrange before new XG molecules adsorb.
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Affiliation(s)
- Ana Villares
- UR1268 Biopolymères Interactions Assemblages, INRA, F-44316 Nantes, France.
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Dammak A, Quémener B, Bonnin E, Alvarado C, Bouchet B, Villares A, Moreau C, Cathala B. Exploring Architecture of Xyloglucan Cellulose Nanocrystal Complexes through Enzyme Susceptibility at Different Adsorption Regimes. Biomacromolecules 2015; 16:589-96. [DOI: 10.1021/bm5016317] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [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)
- Abir Dammak
- INRA, UR1268 Biopolymères
Interactions
Assemblages, 44316 Nantes, France
| | - Bernard Quémener
- INRA, UR1268 Biopolymères
Interactions
Assemblages, 44316 Nantes, France
| | - Estelle Bonnin
- INRA, UR1268 Biopolymères
Interactions
Assemblages, 44316 Nantes, France
| | - Camille Alvarado
- INRA, UR1268 Biopolymères
Interactions
Assemblages, 44316 Nantes, France
| | - Brigitte Bouchet
- INRA, UR1268 Biopolymères
Interactions
Assemblages, 44316 Nantes, France
| | - Ana Villares
- INRA, UR1268 Biopolymères
Interactions
Assemblages, 44316 Nantes, France
| | - Céline Moreau
- INRA, UR1268 Biopolymères
Interactions
Assemblages, 44316 Nantes, France
| | - Bernard Cathala
- INRA, UR1268 Biopolymères
Interactions
Assemblages, 44316 Nantes, France
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García-Lafuente A, Moro C, Manchón N, Gonzalo-Ruiz A, Villares A, Guillamón E, Rostagno M, Mateo-Vivaracho L. In vitro anti-inflammatory activity of phenolic rich extracts from white and red common beans. Food Chem 2014; 161:216-23. [DOI: 10.1016/j.foodchem.2014.04.004] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2013] [Revised: 03/06/2014] [Accepted: 04/01/2014] [Indexed: 01/01/2023]
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Villares A. Isolation and characterization of a glucan-type polysaccharide from the red pine mushroom, Lactarius deliciosus (Higher Basidiomycetes). Int J Med Mushrooms 2014; 15:583-9. [PMID: 24266381 DOI: 10.1615/intjmedmushr.v15.i6.60] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
A novel glucan-type polysaccharide has been isolated from the fruiting bodies of the edible mushroom Lactarius deliciosus. Two successive extractions (cold aqueous extraction at 25°C and hot aqueous extraction at 100°C) were performed, and the same polysaccharide was obtained in both fractions. The purity of the polysaccharide was evaluated by size exclusion chromatography. The SEC chromatogram showed a unique peak with a molecular weight of approximately 150 kDa. Analysis of the chain composition revealed that the polysaccharide was composed of glucose. Methylation analysis and NMR experiments showed that the glucan-type carbohydrate contained a main chain consisting of α-(1→3)-Glcp units with α-(1→4)-linked branches every sixth glucose residue.
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Affiliation(s)
- Ana Villares
- Centro para la Calidad de los Alimentos, Instituto Nacional de Investigacion y Tecnologia Agraria y Alimentaria (INIA), Campus Universitario Duques de Soria, c/ Jose Tudela s/n, 42004, Soria, Spain
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Villares A, Moreau C, Capron I, Cathala B. Impact of ionic strength on chitin nanocrystal-xyloglucan multilayer film growth. Biopolymers 2014; 101:924-30. [PMID: 24719043 DOI: 10.1002/bip.22476] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [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: 12/19/2013] [Revised: 02/07/2014] [Accepted: 02/18/2014] [Indexed: 11/12/2022]
Abstract
The impact of the ionic strength on the film growth has been studied for the architectures composed of chitin nanocrystals (ChiNC) and xyloglucan (XG) to better understand the fabrication process of multilayer films. The formation of ChiNC-XG assemblies was monitored by quartz crystal microbalance with dissipation (QCM-D) and multilayer films were fabricated by the spin-coating assisted layer-by-layer (LbL) procedure. Films were prepared from 1 g L(-1) ChiNC dispersions at pH 4 without and with the addition of NaCl (0 and 5 mM, respectively) and 0.5 g L(-1) XG solutions in water. Distinct growth pattern and structural characteristics were found for the films prepared from ChiNC at 0 and 5 mM NaCl. Specifically, films assembled without salt exhibited lower mass deposition and film growth failed after 5 (ChiNC-XG) bilayers. Differently, at 5 mM NaCl higher amounts of both polymers (ChiNC and XG) were adsorbed; therefore, the films were thicker, and the deposition succeeded up to 10 bilayers. Atomic force microscopy (AFM) revealed an almost completely covered surface after the adsorption of ChiNC at 5 mM NaCl whereas salt-free ChiNC dispersions resulted in lower surface coverage. These results reliably concluded that the fabrication of (ChiNC-XG) films requires the screening of the charges to promote the layers stability.
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Affiliation(s)
- Ana Villares
- UR1268 Biopolymères Interactions Assemblages, INRA, F-44316, Nantes, France
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Affiliation(s)
- Ana Villares
- UR1268 Biopolymères Interactions
Assemblages, INRA, F-44316 Nantes, France
| | - Céline Moreau
- UR1268 Biopolymères Interactions
Assemblages, INRA, F-44316 Nantes, France
| | - Isabelle Capron
- UR1268 Biopolymères Interactions
Assemblages, INRA, F-44316 Nantes, France
| | - Bernard Cathala
- UR1268 Biopolymères Interactions
Assemblages, INRA, F-44316 Nantes, France
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Villares A, García-Lafuente A, Guillamón E, Mateo-Vivaracho L. Separation and characterization of the structural features of macromolecular carbohydrates from wild edible mushrooms. ACTA ACUST UNITED AC 2013. [DOI: 10.1016/j.bcdf.2013.08.004] [Citation(s) in RCA: 15] [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: 11/17/2022]
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Villares A. Polysaccharides from the edible mushroom Calocybe gambosa: structure and chain conformation of a (1→4),(1→6)-linked glucan. Carbohydr Res 2013; 375:153-7. [DOI: 10.1016/j.carres.2013.04.017] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2012] [Revised: 04/08/2013] [Accepted: 04/15/2013] [Indexed: 10/26/2022]
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Palacios I, Guillamon E, Garcia-Lafuente A, Villares A. Structural Characterization of Water-Soluble Polysaccharides from the Fruiting Bodies of Lentinus edodes Mushrooms. CNF 2012. [DOI: 10.2174/157340112803832165] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Palacios I, Guillamón E, García-Lafuente A, Villares A. Effects of Freeze-Drying Treatment on the Aromatic Profile of Tuber
spp. Truffles. J FOOD PROCESS PRES 2012. [DOI: 10.1111/jfpp.12028] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Irene Palacios
- Centro para la Calidad de los Alimentos; Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria (INIA); Campus Universitario Duques de Soria, c/José Tudela s/n 42004 Soria Spain
| | - Eva Guillamón
- Centro para la Calidad de los Alimentos; Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria (INIA); Campus Universitario Duques de Soria, c/José Tudela s/n 42004 Soria Spain
| | - Ana García-Lafuente
- Centro para la Calidad de los Alimentos; Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria (INIA); Campus Universitario Duques de Soria, c/José Tudela s/n 42004 Soria Spain
| | - Ana Villares
- Centro para la Calidad de los Alimentos; Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria (INIA); Campus Universitario Duques de Soria, c/José Tudela s/n 42004 Soria Spain
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Palacios I, García-Lafuente A, Guillamón E, Villares A. Novel isolation of water-soluble polysaccharides from the fruiting bodies of Pleurotus ostreatus mushrooms. Carbohydr Res 2012; 358:72-7. [DOI: 10.1016/j.carres.2012.06.016] [Citation(s) in RCA: 72] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2012] [Revised: 06/22/2012] [Accepted: 06/25/2012] [Indexed: 11/28/2022]
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Villares A, Guillamon E, Mateo-Vivaracho L, D'Arrigo M, Garcia-Lafuente A. Strategies for the preparation and concentration of mushroom aromatic products. Recent Pat Food Nutr Agric 2012; 4:107-13. [PMID: 22594661 DOI: 10.2174/2212798411204020107] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2012] [Revised: 03/07/2012] [Accepted: 03/17/2012] [Indexed: 11/22/2022]
Abstract
Fungal aroma comprises at least seven chemical groups of volatile organic compounds, which are plain hydrocarbons, heterocycles, alcohols, phenols, acids and derivatives, carbonyls (aldehydes and ketones), and sulfur containing molecules. This aromatic blend provides the excellent sensory properties to produce and several strategies have been employed to create aromatic products having the aroma and taste of mushrooms and truffles. Nowadays, there are several procedures to obtain aroma concentrates. Among them, the simulation of mushroom aroma by the combination of the main substances responsible for the flavour could be an efficient strategy. Nevertheless, natural procedures are gaining more importance since the concentrate is not a synthetic product and the processes commonly involve the use of mushroom waste. In this field, the maceration with precursor molecules, such as linoleic acid, or different types of enzymes is commonly used in food industry. This article provides a wide view of the most common strategies to produce fungal aroma taking into account the main advantages and disadvantages they present. The article presents some promising patents on strategies for the preparation and concentration of mushroom aromatic products.
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Affiliation(s)
- Ana Villares
- Centro para Calidad de Alimentos, Instituto Nacional de Investigacion y Tecnologia Agraria y Alimentaria, Campus Universitario Duques de Soria c/ Jose Tudela, s/n, 42004 Soria, Spain.
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Moro C, Palacios I, Lozano M, D’Arrigo M, Guillamón E, Villares A, Martínez JA, García-Lafuente A. Anti-inflammatory activity of methanolic extracts from edible mushrooms in LPS activated RAW 264.7 macrophages. Food Chem 2012. [DOI: 10.1016/j.foodchem.2011.07.049] [Citation(s) in RCA: 116] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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Villares A, Guillamón E, D’Arrigo M, Martínez JA, García-Lafuente A, Ramos A. Kinetic Study of the Inhibition of Linoleic Acid Oxidation in Aqueous Media by Phenolic Compounds. FOOD BIOPHYS 2011. [DOI: 10.1007/s11483-011-9242-z] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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D'Arrigo M, A. Rostagno M, Villares A, Guillamon E, Garcia-Lafuente A, Ramos A, A. Martinez J. Development of Meat and Poultry Products Enriched with n-3 PUFAs and their Functional Role. Current Nutrition & Food Science 2011. [DOI: 10.2174/157340111804586493] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Palacios I, Lozano M, Moro C, D’Arrigo M, Rostagno M, Martínez J, García-Lafuente A, Guillamón E, Villares A. Antioxidant properties of phenolic compounds occurring in edible mushrooms. Food Chem 2011. [DOI: 10.1016/j.foodchem.2011.03.085] [Citation(s) in RCA: 154] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Palacios I, Moro C, Lozano M, D'Arrigo M, Guillamón E, García-Lafuente A, Villares A. Use of modified atmosphere packaging to preserve mushroom quality during storage. Recent Pat Food Nutr Agric 2011; 3:196-203. [PMID: 21846323 DOI: 10.2174/2212798411103030196] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2010] [Accepted: 12/14/2010] [Indexed: 11/22/2022]
Abstract
Mushrooms have attracted much attention due to their excellent nutritional and sensory properties. However, they are highly perishable and rapidly lose their organoleptic characteristics. Many methods have been employed for mushroom storage, such as packaging, blanching, canning, or freeze drying. Among them, modified atmosphere packaging (MAP) has been widely employed for preserving fresh mushrooms. MAP provides an affordable packaging system that partly avoids enzymatic browning, fermentation and other biochemical processes by maintaining a controlled gas atmosphere. Several factors, including optimum CO2 and O2 partial pressures, permeability, package material, thickness, or product weight, must be considered in order to design a suitable modified atmosphere package for mushrooms. Thus, different strategies are available to preserve mushroom quality after harvest. The article presents some promising patents on use of modified atmosphere packaging to preserve mushroom quality during storage.
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Affiliation(s)
- Irene Palacios
- Centro para la Calidad de los Alimentos, Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria, Campus Universitario Duques de Soria c/ José Tudela, s/n, 42004 Soria, Spain
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Manchón N, D'Arrigo M, García-Lafuente A, Guillamón E, Villares A, Martínez JA, Ramos A, Rostagno MA. Comparison of different types of stationary phases for the analysis of soy isoflavones by HPLC. Anal Bioanal Chem 2011; 400:1251-61. [PMID: 21274519 DOI: 10.1007/s00216-011-4673-4] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [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: 10/29/2010] [Revised: 01/06/2011] [Accepted: 01/07/2011] [Indexed: 12/22/2022]
Abstract
Nowadays, there are new technologies in high-performance liquid chromatography columns available enabling faster and more efficient separations. In this work, we compared three different types of columns for the analysis of main soy isoflavones. The evaluated columns were a conventional reverse phase particle column, a fused-core particle column, and a monolithic column. The comparison was in terms of chromatographic parameters such as resolution, asymmetry, number of theoretical plates, variability of retention time, and peak width. The lower column pressure was provided by the monolithic column, although lower chromatographic performance was achieved. Conventional and fused-core particle columns presented similar pressure. Results also indicate that direct transfer between particle and monolithic columns is not possible requiring adjustment of conditions and a different method optimization strategy. The best chromatographic performance and separation speed were observed for the fused-core particle column. Also, the effect of sample solvent on the separation and peak shape was evaluated and indicated that monolithic column is the most affected especially when using higher concentrations of acetonitrile or ethanol. Sample solvent that showed the lowest effect on the chromatographic performance of the columns was methanol. Overall evaluation of methanol and acetonitrile as mobile phase for the separation of isoflavones indicated higher chromatographic performance of acetonitrile, although methanol may be an attractive alternative. Using acetonitrile as mobile phase resulted in faster, higher resolution, narrower, and more symmetric peaks than methanol with all columns. It also generated the lower column pressure and flatter pressure profile due to mobile phase changes, and therefore, it presents a higher potential to be explored for the development of faster separation methods.
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Affiliation(s)
- N Manchón
- Centro para la Calidad de los Alimentos, Instituto Nacional de Investigación Y Tecnología Agraria y Alimentaria (INIA), c/José Tudela s/n, 42004 Soria, Spain
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Manchón N, D'Arrigo M, García-Lafuente A, Guillamón E, Villares A, Ramos A, Martínez JA, Rostagno MA. Fast analysis of isoflavones by high-performance liquid chromatography using a column packed with fused-core particles. Talanta 2010; 82:1986-94. [PMID: 20875606 DOI: 10.1016/j.talanta.2010.08.050] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.4] [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: 06/29/2010] [Revised: 08/17/2010] [Accepted: 08/26/2010] [Indexed: 11/25/2022]
Abstract
The recent development of fused-core technology in HPLC columns is enabling faster and highly efficient separations. This technology was evaluated for the development of an fast analysis method for the most relevant soy isoflavones. A step-by-step strategy was used to optimize temperature (25-50°C), flow rate (1.2-2.7 mL/min), mobile phase composition and equilibration time (1-5 min). Optimized conditions provided a method for the separation of all isoflavones in less than 5.8 min and total analysis time (sample-to-sample) of 11.5 min. Evaluation of chromatographic performance revealed excellent reproducibility, resolution, selectivity, peak symmetry and low limits of detection and quantification levels. The use of a fused-core column allows highly efficient, sensitive, accurate and reproducible determination of isoflavones with an outstanding sample throughout and resolution. The developed method was validated with different soy samples with a total isoflavone concentration ranging from 1941.53 to 2460.84 μg g(-1) with the predominant isoflavones being isoflavone glucosides and malonyl derivatives.
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Affiliation(s)
- N Manchón
- Centro para la Calidad de los Alimentos, Instituto Nacional de Investigación Y Tecnología Agraria y Alimentaria (INIA), C/José Tudela s/n, 42004 Soria, Spain
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Guillamón E, García-Lafuente A, Lozano M, D´Arrigo M, Rostagno MA, Villares A, Martínez JA. Edible mushrooms: Role in the prevention of cardiovascular diseases. Fitoterapia 2010; 81:715-23. [DOI: 10.1016/j.fitote.2010.06.005] [Citation(s) in RCA: 157] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2010] [Revised: 06/03/2010] [Accepted: 06/03/2010] [Indexed: 10/19/2022]
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Villares A, Pera G, Lydon DP, López MC, Low PJ, Cea P. Mixing behaviour of a conjugated molecular wire candidate and an insulating fatty acid within Langmuir–Blodgett films. Colloids Surf A Physicochem Eng Asp 2009. [DOI: 10.1016/j.colsurfa.2009.06.015] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Rostagno MA, Villares A, Guillamón E, García-Lafuente A, Martínez JA. Sample preparation for the analysis of isoflavones from soybeans and soy foods. J Chromatogr A 2009; 1216:2-29. [PMID: 19041977 DOI: 10.1016/j.chroma.2008.11.035] [Citation(s) in RCA: 120] [Impact Index Per Article: 8.0] [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: 08/06/2008] [Revised: 11/03/2008] [Accepted: 11/13/2008] [Indexed: 12/31/2022]
Abstract
This manuscript provides a review of the actual state and the most recent advances as well as current trends and future prospects in sample preparation and analysis for the quantification of isoflavones from soybeans and soy foods. Individual steps of the procedures used in sample preparation, including sample conservation, extraction techniques and methods, and post-extraction treatment procedures are discussed. The most commonly used methods for extraction of isoflavones with both conventional and "modern" techniques are examined in detail. These modern techniques include ultrasound-assisted extraction, pressurized liquid extraction, supercritical fluid extraction and microwave-assisted extraction. Other aspects such as stability during extraction and analysis by high performance liquid chromatography are also covered.
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Affiliation(s)
- M A Rostagno
- Centro para la Calidad de los Alimentos, Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria (INIA), Campus Universitario "Duques de Soria", 42004 Soria, Spain.
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Haro M, del Barrio J, Villares A, Oriol L, Cea P, López MC. Supramolecular architecture in Langmuir and Langmuir-Blodgett films incorporating a chiral azobenzene. Langmuir 2008; 24:10196-10203. [PMID: 18686982 DOI: 10.1021/la801299a] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
This article describes the synthesis and fabrication of Langmuir and Langmuir-Blodgett (LB) films incorporating a chiral azobenzene derivative, namely, ( S)-4- sec-butyloxy-4'-[5''-(methyloxycarbonyl)pentyl-1''-oxy]azobenzene, abbreviated as AZO-C4(S). Appropriate conditions for the fabrication of monolayers of AZO-C4(S) at the air-water interface have been established, and the resulting Langmuir films have been characterized by a combination of surface pressure and surface potential versus area per molecule isotherms, Brewster angle microscopy, and UV-vis reflection spectroscopy. The results indicate the formation of an ordered trilayer at the air-water interface with UV-vis reflection spectroscopy showing a new supramolecular architecture for multilayered films as well as the formation of J aggregates. Films were transferred onto solid substrates, with AFM revealing well-ordered multilayered films without 3D defects. Infrared and UV-vis absorption spectroscopy indicate that the supramolecular architecture may be favored by the formation of H bonds between acid groups in neighboring layers and pi-pi intermolecular interactions. Circular dichroism spectra reveal chiro-optical activity in multilayered LB films.
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Affiliation(s)
- Marta Haro
- Departamento de Quimica Organica-Quimica Fisica, Facultad de Ciencias, Universidad de Zaragoza, Plaza de San Francisco, Ciudad Universitaria, 50009 Zaragoza, Spain
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Villares A, Martín S, Giner I, Díaz J, Lydon DP, Low PJ, Cea P. The use of scanning polarization force microscopy to study the miscibility of a molecular wire candidate and an insulating fatty acid in mixed films. Soft Matter 2008; 4:1508-1514. [PMID: 32907118 DOI: 10.1039/b716798a] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Mixed films containing a conjugated "molecular wire" candidate and an "insulating" fatty acid have been prepared by the Langmuir-Blodgett technique. Specifically, this paper reports the fabrication of mixed films as well as miscibility studies of 4-[4-(4-hexyloxyphenylethynyl)phenylethynyl]benzoic acid (HBPEB) and docosanoic (or behenic) acid (BA). Surface pressure vs. area per molecule isotherms were recorded, with excess area and excess Gibbs energy of mixing calculated. Surface potential-area per molecule isotherms were also recorded for mixtures over the whole range of mole fractions, with negative deviations from the additivity rule revealing orientational changes induced in the HBPEB molecules. The Langmuir films were transferred onto solid supports and characterized by SPM techniques, with atomic force microscopy (AFM) revealing that well-ordered, defect-free films are obtained. The use of scanning polarization force microscopy (SPFM), which provides non-contact imaging based on differences in surface charge distribution, i.e., surface potential, provides complimentary information regarding distribution of the components within the mixed films. From the comprehensive miscibility study performed, which includes thermodynamic and imaging methods, it can be concluded that the wire-like molecule and the fatty acid are miscible over the 0-0.1 and 0.8-1 ranges of HBPEB mole fraction while phase separation occurs for HBPEB mole fractions over the 0.1-0.8 range.
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Affiliation(s)
- Ana Villares
- Department of Organic and Physical Chemistry, University of Zaragoza, 50009 Zaragoza, Spain.
| | - Santiago Martín
- Department of Chemistry, University of Liverpool, Crown Street, Liverpool, UKL69 7ZD
| | - Ignacio Giner
- Department of Organic and Physical Chemistry, University of Zaragoza, 50009 Zaragoza, Spain.
| | - Jordi Díaz
- Laboratory of Electrochemistry and Materials (LCTEM), Department of Physical Chemistry, University of Barcelona, Martí I Franquès 1 and Scientific-technical Services (Nanometric Techniques) of the University of Barcelona, Solé I Sabaris, 1, 08028 Barcelona, Spain
| | - Donocadh P Lydon
- Department of Chemistry, University of Durham, Durham, UKDH1 3LE
| | - Paul J Low
- Department of Chemistry, University of Durham, Durham, UKDH1 3LE
| | - Pilar Cea
- Department of Organic and Physical Chemistry, University of Zaragoza, 50009 Zaragoza, Spain. and Institute of Nanoscience of Aragón (INA), 50009 Zaragoza, Spain
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Bandrés I, Giner B, Villares A, Artigas H, Lafuente C. Thermodynamic properties of tetrahydrofuran or tetrahydropyran with 1-chlorohexane. J Mol Liq 2008. [DOI: 10.1016/j.molliq.2007.12.002] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Villares A, Lydon DP, Porrès L, Beeby A, Low PJ, Cea P, Royo FM. Preparation of Ordered Films Containing a Phenylene Ethynylene Oligomer by the Langmuir−Blodgett Technique. J Phys Chem B 2007; 111:7201-9. [PMID: 17552562 DOI: 10.1021/jp072052h] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.5] [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
This paper reports the fabrication and characterization of Langmuir and Langmuir-Blodgett (LB) films incorporating an oligo(phenylene-ethynylene) (OPE) derivative, namely, 4-[4-(4-hexyloxyphenylethynyl)-phenylethynyl]-benzoic acid (HBPEB). Conditions appropriate for deposition of monolayers of HBPEB at the air-water interface have been established and the resulting Langmuir films characterized by a combination of surface pressure and surface potential versus area per molecule isotherms, Brewster angle microscopy, and ultraviolet reflection spectroscopy. The Langmuir films are readily transferred onto solid substrates, and one-layer LB films transferred at several surface pressures onto mica substrates have been analyzed by means of atomic force microscopy, from which it can be concluded that 14 mN/m is an optimum surface pressure of transference, giving well-ordered homogeneous films without three-dimensional defects and a low surface roughness. The optical and emissive properties of the LB films have been determined with significant blue-shifted absorption spectra indicating formation of two-dimensional H aggregates and a Stokes shift illustrating the effects of the solid-like environment on the molecular chromophore.
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Affiliation(s)
- Ana Villares
- Departamento de Química OrgAnica-Química Física, Area de Química Física, Facultad de Ciencias, Universidad de Zaragoza, Zaragoza, Spain
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Haro M, Villares A, Gascón I, Artigas H, Cea P, López MC. Electrochemical and photoelectrochemical response of electrodes coated with LB films of an azopolymer. Electrochim Acta 2007. [DOI: 10.1016/j.electacta.2007.02.003] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Cea P, Martín S, Villares A, Möbius D, López MC. Use of UV−vis Reflection Spectroscopy for Determining the Organization of Viologen and Viologen Tetracyanoquinodimethanide Monolayers. J Phys Chem B 2005; 110:963-70. [PMID: 16471630 DOI: 10.1021/jp055673o] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
UV-vis reflection spectroscopy has been used for proving in situ the organization of pure viologen and hybrid viologen tetracyanoquinodimethanide monolayers at the air-water interface. Other more classical measurements concerning Langmuir monolayers, including surface pressure-area and surface potential-area isotherms, are also provided. The organization of the viologen in the Langmuir monolayer was investigated upon the different states of compression, and the tilt angle of the viologen moieties with respect to the water surface was determined. A gradual transition of the viologen molecules from a flat orientation in the gas phase to a more tilted position with respect to the water surface in the condensed phases occurs. The addition of a tetracyanoquinodimethane (TCNQ) salt in the subphase leads to the penetration of TCNQ anions into the positively charged viologen monolayer forming a hybrid viologen tetracyanoquinodimethanide film where a charge-transfer interaction between the two moieties is observed. From a quantitative analysis of the reflection spectra, an organization model of these hybrid monolayers at the air-water interface is proposed, suggesting a parallel arrangement of viologen and TCNQ units with a 1:2 stoichiometry.
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Affiliation(s)
- Pilar Cea
- Departamento de Química Orgánica-Química Física, Facultad de Ciencias, Plaza de San Francisco, Ciudad Universitaria, 50009 Zaragoza, Spain
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Martı́n S, Villares A, Haro M, López MC, Cea P. Electrochemical investigation on hybrid viologen tetracyanoquinodimethanide LB films. J Electroanal Chem (Lausanne) 2005. [DOI: 10.1016/j.jelechem.2004.12.037] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Villares A, Giner B, Artigas H, Lafuente C, Royo FM. Study of the Surface Tensions of Cyclohexane or Methylcyclohexane with Some Cyclic Ethers. J SOLUTION CHEM 2005. [DOI: 10.1007/s10953-005-2760-x] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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