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Bragato C, Persico A, Ferreres G, Tzanov T, Mantecca P. Exploring the Effects of Lignin Nanoparticles in Different Zebrafish Inflammatory Models. Int J Nanomedicine 2024; 19:7731-7750. [PMID: 39099787 PMCID: PMC11297570 DOI: 10.2147/ijn.s469813] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2024] [Accepted: 07/04/2024] [Indexed: 08/06/2024] Open
Abstract
Purpose Lignin is the most abundant source of aromatic biopolymers and has gained interest in industrial and biomedical applications due to the reported biocompatibility and defense provided against bacterial and fungal pathogens, besides antioxidant and UV-blocking properties. Especially in the form of nanoparticles (NPs), lignin may display also antioxidant and anti-inflammatory activities. Methods To evaluate these characteristics, sonochemically nano-formulated pristine lignin (LigNPs) and enzymatically-phenolated one (PheLigNPs) were used to expose zebrafish embryos, without chorion, at different concentrations. Furthermore, two different zebrafish inflammation models were generated, by injecting Pseudomonas aeruginosa lipopolysaccharide (LPS) and by provoking a wound injury in the embryo caudal fin. The inflammatory process was investigated in both models by qPCR, analyzing the level of genes as il8, il6, il1β, tnfα, nfkbiaa, nfk2, and ccl34a.4, and by the evaluation of neutrophils recruitment, taking advantage of the Sudan Black staining, in the presence or not of LigNPs and PheLigNPs. Finally, the Wnt/β-catenin pathway, related to tissue regeneration, was investigated at the molecular level in embryos wounded and exposed to NPs. Results The data obtained demonstrated that the lignin-based NPs showed the capacity to induce a positive response during an inflammatory event, increasing the recruitment of cytokines to accelerate their chemotactic function. Moreover, the LigNPs and PheLigNPs have a role in the resolution of wounds, favoring the regeneration process. Conclusion In this paper, we used zebrafish embryos within 5 days post fertilization (hpf). Despite being an early-stage exemplary, the zebrafish embryos have proven their potential as predicting models. Further long-term experiments in adults will be needed to explore completely the biomedical capabilities of lignin NPs. The results underlined the safety of both NPs tested paved the way for further evaluations to exploit the anti-inflammatory and pro-healing properties of the lignin nanoparticles examined.
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Affiliation(s)
- Cinzia Bragato
- POLARIS Research Center, Department of Earth and Environmental Sciences, University of Milano-Bicocca, Milan, 20126, Italy
| | - Andrea Persico
- POLARIS Research Center, Department of Earth and Environmental Sciences, University of Milano-Bicocca, Milan, 20126, Italy
| | - Guillem Ferreres
- Group of Molecular and Industrial Biotechnology, Universitat Politècnica de Catalunya, Terrassa, 08222, Spain
| | - Tzanko Tzanov
- Group of Molecular and Industrial Biotechnology, Universitat Politècnica de Catalunya, Terrassa, 08222, Spain
| | - Paride Mantecca
- POLARIS Research Center, Department of Earth and Environmental Sciences, University of Milano-Bicocca, Milan, 20126, Italy
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Ferreres G, Pérez-Rafael S, Morena AG, Tzanov T, Gryshchuk L. Influence of Enzymatically Hydrophobized Hemp Protein on Morphology and Mechanical Properties of Bio-Based Polyurethane and Epoxy Foams. Polymers (Basel) 2023; 15:3608. [PMID: 37688234 PMCID: PMC10490182 DOI: 10.3390/polym15173608] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2023] [Revised: 08/26/2023] [Accepted: 08/29/2023] [Indexed: 09/10/2023] Open
Abstract
Biomass fillers offer the possibility to modify the mechanical properties of foams, increasing their cost-effectiveness and reducing their carbon footprint. In this study, bio-based PU (soft, open cells for the automotive sector) and epoxy (EP, hard, closed cells for construction applications) composite foams were prepared by adding pristine and laccase-mediated lauryl gallate-hydrophobized hemp protein particles as filler (HP and HHP, respectively). The fillers were able to modify the density, the mechanical properties and the morphology of the PU and EP foams. The addition of HP filler increases the density of PU foams up to 100% and significantly increases the σ values by 40% and Emod values. On the other hand, the inclusion of the HHP as filler in PU foams mostly results in reduced density, by almost 30%, and reduced σ values in comparison with reference and HP-filled foams. Independently from filler concentration and type, the biomass increased the Emod values for all foams relative to the reference. In the case of the EP foams, the tests were only conducted for the foams filled with HHP due to the poor compatibility of HP with the EP matrix. HHP decreased the density, compressive strength and Emod values of the composites. For both foams, the fillers increased the size of the cells, while reducing the amount of open cells of PU foams and the amount of closed cells for EP foams. Finally, both types of foams filled with HHP reduced the moisture uptake by 80 and 45%, respectively, indicating the successful hydrophobization of the composites.
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Affiliation(s)
- Guillem Ferreres
- Grup de Biotecnologia Molecular i Industrial, Universitat Politècnica de Catalunya, Edifici Gaia, TR14, Rambla Sant Nebridi, 22, 08222 Terrassa, Spain; (G.F.); (S.P.-R.); (A.G.M.); (T.T.)
| | - Sílvia Pérez-Rafael
- Grup de Biotecnologia Molecular i Industrial, Universitat Politècnica de Catalunya, Edifici Gaia, TR14, Rambla Sant Nebridi, 22, 08222 Terrassa, Spain; (G.F.); (S.P.-R.); (A.G.M.); (T.T.)
| | - Angela Gala Morena
- Grup de Biotecnologia Molecular i Industrial, Universitat Politècnica de Catalunya, Edifici Gaia, TR14, Rambla Sant Nebridi, 22, 08222 Terrassa, Spain; (G.F.); (S.P.-R.); (A.G.M.); (T.T.)
| | - Tzanko Tzanov
- Grup de Biotecnologia Molecular i Industrial, Universitat Politècnica de Catalunya, Edifici Gaia, TR14, Rambla Sant Nebridi, 22, 08222 Terrassa, Spain; (G.F.); (S.P.-R.); (A.G.M.); (T.T.)
| | - Liudmyla Gryshchuk
- Leibniz-Institut für Verbundwerkstoffe GmbH, Erwin-Schrödinger-Straße 58, 67663 Kaiserslautern, Germany
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Laccase multi-point covalent immobilization: characterization, kinetics, and its hydrophobicity applications. Appl Microbiol Biotechnol 2023; 107:719-733. [PMID: 36602562 DOI: 10.1007/s00253-022-12352-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2022] [Revised: 12/17/2022] [Accepted: 12/20/2022] [Indexed: 01/06/2023]
Abstract
Laccase from Myceliophthora thermophila was immobilized using one-point and multi-point covalent attachment on both a native and a modified new commercial epoxy carrier (Immobead 150P). After 10 cycles of operation at pH 3.0 and temperature 70 °C, the multi-point covalently immobilized laccase on the modified Immobead 150P performed best in terms of immobilization characteristics, retaining 95% of its initial activity. Thermodynamic parameters of thermal inactivation emphasized the positive impact of the immobilization procedure. At 50 °C, the immobilized and free enzyme activity levels dropped by 27 and 73%, respectively, after 48 h of incubation. The immobilized enzyme enhanced its stability in alkaline conditions, resuming 95% of its original activity after 3 h at pH 9.0. Immobilization reduced substrate affinity because the free laccase's Km value was lower than that of the immobilized laccase. Finally, the application of immobilized laccase in an innovative wood treatment process was tested by grafting lauryl gallate (LG) in order to provide hydrophobic properties to the wood. The results showed a relative water contact angle of 85.7% for treated wood, whereas the control showed only 26.6%, after 4 min of contact between water and beechwood surface. KEY POINTS: • Multi-point covalent immobilization of a commercial laccase on a commercial support. • Enzymatic parameters generally improved by immobilization process. • New application of immobilized laccase: enzymatic-assisted wood hydrophobization.
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Pu Y, Fang J. Preparation and thermochromic behavior of low-temperature thermochromic microcapsule temperature indicators. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.129889] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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5
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Liu N, Ni S, Gao H, Chang Y, Fu Y, Liu W, Qin M. Laccase-Catalyzed Grafting of Lauryl Gallate on Chitosan To Improve Its Antioxidant and Hydrophobic Properties. Biomacromolecules 2021; 22:4501-4509. [PMID: 34601873 DOI: 10.1021/acs.biomac.1c00725] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Biografting is a promising and ecofriendly approach to meet various application requirements of products. Herein, a popular green enzyme, laccase, was adopted to graft a hydrophobic phenolic compound (lauryl gallate, LG) onto chitosan (CTS). The resultant chitosan derivate (Lac/LG-CTS) was systematically analyzed by Fourier transform infrared (FTIR), grafting efficiency, scanning probe microscopy (SPM), and X-ray diffraction (XRD). This grafting technique produced a multifunctional chitosan copolymer with remarkably enhanced antioxidant property, hydrophobicity, and moisture barrier property. Furthermore, the swelling capacity and acid solubility of the copolymer film decreased significantly, although the tensile strength and elongation were slightly weakened as compared to those of native chitosan. These results suggest that the Lac/LG-CTS holds great potential as a food-packaging material, preservative agent, or edible coating material.
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Affiliation(s)
- Na Liu
- State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology, Shandong Academy of Sciences, Jinan 250353, P. R. China
| | - Shuzhen Ni
- State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology, Shandong Academy of Sciences, Jinan 250353, P. R. China
| | - Hailong Gao
- Marine Biotechnology, Shandong Industrial Technician College, Weifang 261053, P. R. China
| | - Yongjie Chang
- State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology, Shandong Academy of Sciences, Jinan 250353, P. R. China
| | - Yingjuan Fu
- State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology, Shandong Academy of Sciences, Jinan 250353, P. R. China
| | - Wenxia Liu
- State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology, Shandong Academy of Sciences, Jinan 250353, P. R. China
| | - Menghua Qin
- Organic Chemistry Laboratory, Taishan University, Tai'an 271021, P. R. China
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Mayr SA, Schwaiger N, Weber HK, Kovač J, Guebitz GM, Nyanhongo GS. Enzyme Catalyzed Copolymerization of Lignosulfonates for Hydrophobic Coatings. Front Bioeng Biotechnol 2021; 9:697310. [PMID: 34336809 PMCID: PMC8317694 DOI: 10.3389/fbioe.2021.697310] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2021] [Accepted: 06/23/2021] [Indexed: 11/13/2022] Open
Abstract
Enzymatic polymerization of lignin can generate a variety of value-added products concomitantly replacing fossil-based resources. In line with this approach, a laccase from the thermophilic fungus Myceliophthora thermophila (MtL) was used to couple a hydrophobicity enhancing fluorophenol (FP) molecule, namely 4-[4-(trifluoromethyl)phenoxy]phenol (4,4-F3MPP), as a model substrate onto lignosulfonate (LS). During the coupling reaction changes in fluorescence, phenol content, viscosity and molecular weight (size exclusion chromatography; SEC) were monitored. The effects of enzymatic coupling of FP onto LS on hydrophobicity were investigated by the means of water contact angle (WCA) measurement and determination of swelling capacity. Full polymerization of LS resulting in the production of water-insoluble polymers was achieved at a pH of 7 and 33°C. Incorporation of 2% (w/v) of FP led to an increase in WCA by 59.2% while the swelling capacity showed a decrease by 216.8%. Further, Fourier transform infrared spectroscopy (FTIR) and X-ray photoelectron spectroscopy (XPS) analysis indicated successful covalent coupling of the FP molecule onto LS by an emerging peak at 1,320 cm–1 in the FTIR spectrum and the evidence of Fluor in the XPS spectrum. This study shows the ability of laccase to mediate the tailoring of LS properties to produce functional polymers.
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Affiliation(s)
- Sebastian A Mayr
- Institute of Environmental Biotechnology, University of Natural Resources and Life Sciences, Tulln, Austria
| | | | | | - Janez Kovač
- Department of Surface Engineering, Jozef Stefan Institute, Ljubljana, Slovenia
| | - Georg M Guebitz
- Institute of Environmental Biotechnology, University of Natural Resources and Life Sciences, Tulln, Austria.,Austrian Centre of Industrial Biotechnology, Tulln, Austria
| | - Gibson S Nyanhongo
- Institute of Environmental Biotechnology, University of Natural Resources and Life Sciences, Tulln, Austria.,Austrian Centre of Industrial Biotechnology, Tulln, Austria
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Morin S, Lecart B, Lang M, Richel A. Lignocellulosic fibres surface interactions in enzymatic reaction using data-mining. Carbohydr Polym 2021; 254:117412. [PMID: 33357898 DOI: 10.1016/j.carbpol.2020.117412] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2020] [Revised: 10/05/2020] [Accepted: 11/13/2020] [Indexed: 10/22/2022]
Abstract
Lignocellulosic fibres modification focused so far essentially on the resulting material properties to create functional fibres instead of determining the reaction influencing parameters. Using a data-mining algorithm, surface chemical composition of the fibres after modifications was compared to multiple signals. A 24 h reaction at either 25 °C or 60 °C, pH5 was conducted in presence of trans-ferulic acid, laccase, and lignocellulosic fibres (flax, hemp, or cellulose) having different chemical surface composition. Dimers and trimers were detected in variable concentrations in the reaction filtrate and extractive. At 25 °C, crystalline cellulose, amorphous cellulose, xylans, mannans, and lignins were well correlated to specific reaction products while at 60 °C, only lignins and xylan were found correlated to reaction products. Fibres surface composition affected the extractive profile. Lignocellulosic surface composition influence on the product formed was unveiled using a data mining approach. This study presents a way to unveil non-evident chemical interface interaction in reactions.
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Affiliation(s)
- Sophie Morin
- Laboratory of Biomass and Green Technologies, University of Liège, Passage des Déportés, 2, Gembloux 5030, Belgium.
| | - Brieuc Lecart
- Laboratory of Biomass and Green Technologies, University of Liège, Passage des Déportés, 2, Gembloux 5030, Belgium
| | - Mylène Lang
- Laboratory of Biomass and Green Technologies, University of Liège, Passage des Déportés, 2, Gembloux 5030, Belgium
| | - Aurore Richel
- Laboratory of Biomass and Green Technologies, University of Liège, Passage des Déportés, 2, Gembloux 5030, Belgium
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Mnich E, Bjarnholt N, Eudes A, Harholt J, Holland C, Jørgensen B, Larsen FH, Liu M, Manat R, Meyer AS, Mikkelsen JD, Motawia MS, Muschiol J, Møller BL, Møller SR, Perzon A, Petersen BL, Ravn JL, Ulvskov P. Phenolic cross-links: building and de-constructing the plant cell wall. Nat Prod Rep 2020; 37:919-961. [PMID: 31971193 DOI: 10.1039/c9np00028c] [Citation(s) in RCA: 78] [Impact Index Per Article: 19.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Covering: Up to 2019Phenolic cross-links and phenolic inter-unit linkages result from the oxidative coupling of two hydroxycinnamates or two molecules of tyrosine. Free dimers of hydroxycinnamates, lignans, play important roles in plant defence. Cross-linking of bound phenolics in the plant cell wall affects cell expansion, wall strength, digestibility, degradability, and pathogen resistance. Cross-links mediated by phenolic substituents are particularly important as they confer strength to the wall via the formation of new covalent bonds, and by excluding water from it. Four biopolymer classes are known to be involved in the formation of phenolic cross-links: lignins, extensins, glucuronoarabinoxylans, and side-chains of rhamnogalacturonan-I. Lignins and extensins are ubiquitous in streptophytes whereas aromatic substituents on xylan and pectic side-chains are commonly assumed to be particular features of Poales sensu lato and core Caryophyllales, respectively. Cross-linking of phenolic moieties proceeds via radical formation, is catalyzed by peroxidases and laccases, and involves monolignols, tyrosine in extensins, and ferulate esters on xylan and pectin. Ferulate substituents, on xylan in particular, are thought to be nucleation points for lignin polymerization and are, therefore, of paramount importance to wall architecture in grasses and for the development of technology for wall disassembly, e.g. for the use of grass biomass for production of 2nd generation biofuels. This review summarizes current knowledge on the intra- and extracellular acylation of polysaccharides, and inter- and intra-molecular cross-linking of different constituents. Enzyme mediated lignan in vitro synthesis for pharmaceutical uses are covered as are industrial exploitation of mutant and transgenic approaches to control cell wall cross-linking.
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Affiliation(s)
- Ewelina Mnich
- Department of Plant and Environmental Sciences, University of Copenhagen, Denmark.
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9
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Slagman S, Zuilhof H, Franssen MCR. Laccase-Mediated Grafting on Biopolymers and Synthetic Polymers: A Critical Review. Chembiochem 2018; 19:288-311. [PMID: 29111574 PMCID: PMC5836925 DOI: 10.1002/cbic.201700518] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2017] [Indexed: 12/27/2022]
Abstract
Laccase-mediated grafting on lignocelluloses has gained considerable attention as an environmentally benign method to covalently modify wood, paper and cork. In recent decades this technique has also been employed to modify fibres with a polysaccharide backbone, such as cellulose or chitosan, to infer colouration, antimicrobial activity or antioxidant activity to the material. The scope of this approach has been further widened by researchers, who apply mediators or high redox potential laccases and those that modify synthetic polymers and proteins. In all cases, the methodology relies on one- or two-electron oxidation of the surface functional groups or of the graftable molecule in solution. However, similar results can very often be achieved through simple deposition, even after extensive washing. This unintended adsorption of the active substance could have an adverse effect on the durability of the applied coating. Differentiating between actual covalent binding and adsorption is therefore essential, but proves to be challenging. This review not only covers excellent research on the topic of laccase-mediated grafting over the last five to ten years, but also provides a critical comparison to highlight either the lack or presence of compelling evidence for covalent grafting.
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Affiliation(s)
- Sjoerd Slagman
- Laboratory of Organic ChemistryWageningen University & ResearchStippeneng 46708 WEWageningenThe Netherlands
| | - Han Zuilhof
- Laboratory of Organic ChemistryWageningen University & ResearchStippeneng 46708 WEWageningenThe Netherlands
- School of Pharmaceutical Sciences and TechnologyTianjin University92 Weijin RoadNankai DistrictTianjin92000P. R. China
| | - Maurice C. R. Franssen
- Laboratory of Organic ChemistryWageningen University & ResearchStippeneng 46708 WEWageningenThe Netherlands
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Cellulose oxidation by Laccase-TEMPO treatments. Carbohydr Polym 2017; 157:1488-1495. [DOI: 10.1016/j.carbpol.2016.11.033] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2016] [Revised: 10/25/2016] [Accepted: 11/10/2016] [Indexed: 11/22/2022]
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11
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Enzymatic modification of polysaccharides: Mechanisms, properties, and potential applications: A review. Enzyme Microb Technol 2016; 90:1-18. [DOI: 10.1016/j.enzmictec.2016.04.004] [Citation(s) in RCA: 129] [Impact Index Per Article: 16.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2015] [Revised: 04/04/2016] [Accepted: 04/08/2016] [Indexed: 11/24/2022]
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Xiaoman Z, Teresa M, Artur R, Carla S, Jing W, Jiajia F, Artur CP. Cutinase promotes dry esterification of cotton cellulose. Biotechnol Prog 2015; 32:60-5. [DOI: 10.1002/btpr.2194] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2015] [Revised: 10/22/2015] [Indexed: 11/10/2022]
Affiliation(s)
- Zhao Xiaoman
- Key Laboratory of Eco-Textiles Ministry of Education; Jiangnan University; Wuxi 214122 P.R. China
| | - Matama Teresa
- Centre of Biological Engineering (CEB); University of Minho, Braga, Portugal
| | - Ribeiro Artur
- Centre of Biological Engineering (CEB); University of Minho, Braga, Portugal
| | - Silva Carla
- Centre of Biological Engineering (CEB); University of Minho, Braga, Portugal
| | - Wu Jing
- State Key Laboratory of Food Science and Technology; Jiangnan University; Wuxi 214122 P.R. China
| | - Fu Jiajia
- Key Laboratory of Eco-Textiles Ministry of Education; Jiangnan University; Wuxi 214122 P.R. China
- National Engineering Laboratory for Modern Silk; Soochow University; P.R. China
| | - Cavaco-Paulo Artur
- Centre of Biological Engineering (CEB); University of Minho, Braga, Portugal
- International Joint Research Laboratory for Textile and Fiber Bioprocesses; Jiangnan University; Wuxi 214122 P.R.China
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Cusola O, Valls C, Vidal T, Tzanov T, Roncero MB. Electrochemical Insights on the Hydrophobicity of Cellulose Substrates Imparted by Enzymatically Oxidized Gallates with Increasing Alkyl Chain Length. ACS APPLIED MATERIALS & INTERFACES 2015; 7:13834-13841. [PMID: 26057550 DOI: 10.1021/acsami.5b01904] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
In this work, we studied the influence of the alkyl chain length in enzymatically oxidized gallates on the development of hydrophobicity on paper-based materials, and further correlated the obtained effect to the redox mechanism of the enzymatic treatment. Laccase (Lac) enzyme was used to oxidize various members of the gallate homologous series in the presence or not of lignosulfonates (SL) to produce several functionalization solutions (FS), which were subsequently applied to cellulosic substrates. The hydrophobicity of the substrates was then assessed by means of water drop test (WDT) and contact angle (WCA) measurements. Hydrophobicity peaked reaching WDT and WCA values around 5000 s and 130°, respectively, and then decreased with increasing length of the hydrocarbon chain of gallate. Cyclic voltrammetry (CV) was used to study the effect of SL on the redox reactions of several gallates. The intensity of the anodic peak in their voltammograms decreased increasing the chain length of the gallate. The electrochemical behavior of lauryl gallate (LG) differed from that of other gallates. The fact that the voltammetric curves for SL and LG intersected at a potential of 478 mV indicates an enhancing effect of SL on LG oxidation at high potentials (above 478 mV).
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Affiliation(s)
- Oriol Cusola
- †CELBIOTECH_Paper Engineering Research Group, Universitat Politècnica de Catalunya BarcelonaTech, Colom 11, E-08222 Terrassa, Spain
| | - Cristina Valls
- †CELBIOTECH_Paper Engineering Research Group, Universitat Politècnica de Catalunya BarcelonaTech, Colom 11, E-08222 Terrassa, Spain
| | - Teresa Vidal
- †CELBIOTECH_Paper Engineering Research Group, Universitat Politècnica de Catalunya BarcelonaTech, Colom 11, E-08222 Terrassa, Spain
| | - Tzanko Tzanov
- ‡Group of Molecular and Industrial Biotechnology, Department of Chemical Engineering, Universitat Politècnica de Catalunya BarcelonaTech, Rambla Sant Nebridi, 22, 08222 Terrassa, Spain
| | - M Blanca Roncero
- †CELBIOTECH_Paper Engineering Research Group, Universitat Politècnica de Catalunya BarcelonaTech, Colom 11, E-08222 Terrassa, Spain
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Wang H, Fan J, Fei G, Lan J, Zhao Z. Preparation and property of waterborne UV-curable chain-extended polyurethane surface sizing agent: Strengthening and waterproofing mechanism for cellulose fiber paper. J Appl Polym Sci 2015. [DOI: 10.1002/app.42354] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Haihua Wang
- College of Chemistry and Chemical Engineering; Key Laboratory of Auxiliary Chemistry and Technology for Chemical Industry; Ministry of Education; Shaanxi University of Science and Technology; Xi'an Shaanxi 710021 China
| | - Jie Fan
- College of Chemistry and Chemical Engineering; Key Laboratory of Auxiliary Chemistry and Technology for Chemical Industry; Ministry of Education; Shaanxi University of Science and Technology; Xi'an Shaanxi 710021 China
| | - Guiqiang Fei
- College of Chemistry and Chemical Engineering; Key Laboratory of Auxiliary Chemistry and Technology for Chemical Industry; Ministry of Education; Shaanxi University of Science and Technology; Xi'an Shaanxi 710021 China
| | - Jing Lan
- College of Chemistry and Chemical Engineering; Key Laboratory of Auxiliary Chemistry and Technology for Chemical Industry; Ministry of Education; Shaanxi University of Science and Technology; Xi'an Shaanxi 710021 China
| | - Zhixin Zhao
- College of Chemistry and Chemical Engineering; Key Laboratory of Auxiliary Chemistry and Technology for Chemical Industry; Ministry of Education; Shaanxi University of Science and Technology; Xi'an Shaanxi 710021 China
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Cusola O, Roncero MB, Vidal T, Rojas OJ. A facile and green method to hydrophobize films of cellulose nanofibrils and silica by laccase-mediated coupling of nonpolar colloidal particles. CHEMSUSCHEM 2014; 7:2868-2878. [PMID: 25164078 DOI: 10.1002/cssc.201402432] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/18/2014] [Indexed: 06/03/2023]
Abstract
Hydrophobic particles based on dodecyl 3,4,5-trihydroxybenzoate (LG) were coupled onto the surface of cellulose nanofibrils (CNFs) and silica by treatment with a multicomponent colloidal system (MCS) derived from the laccase-mediated reaction of LG in the presence of a sulfonated lignin (SL). Surface modification upon treatment with MCS was monitored in situ and in real time by quartz crystal microgravimetry. The colloidal stability of MCS and its components in water was followed by measuring space- and time-resolved light transmission and back scattering. The sulfonated lignin increased dispersion stability and reduced the characteristic MCS particle size [from ≈4 to ≈80 nm, according to AFM and dynamic light scattering (DLS)]. It also facilitated the surface enzymatic reaction that led to adsorption and coupling of MCS onto CNFs and silica surfaces. The combined effect of reduced surface energy and surface roughness by MCS treatment produced an increase in water contact angle on CNFs and silica of about 90 and 80°, respectively. Surface pretreatment with chitosan further increased the extent of MCS adsorption on the surfaces. This method represents a sustainable alternative to traditional approaches for cellulose hydrophobization and a step forward in implementing green routes for surface modification.
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Affiliation(s)
- Oriol Cusola
- Textile and Paper Engineering Department, Universitat Politècnica de Catalunya (UPC, BarcelonaTech), Colom 11, 08222 Terrassa (Spain); Department of Forest Products Technology, School of Chemical Technology, Aalto University, P.O. Box 16300, 00076 Aalto, Espoo (Finland).
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Kalia S, Thakur K, Kumar A, Celli A. Laccase-assisted surface functionalization of lignocellulosics. ACTA ACUST UNITED AC 2014. [DOI: 10.1016/j.molcatb.2014.01.014] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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17
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Dong L, Hu H, Yang S, Cheng F. Grafted Copolymerization Modification of Hemicellulose Directly in the Alkaline Peroxide Mechanical Pulping (APMP) Effluent and Its Surface Sizing Effects on Corrugated Paper. Ind Eng Chem Res 2014. [DOI: 10.1021/ie4044423] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Liying Dong
- Tianjin University of Science and Technology, 13th
Street, Binhai, Tianjin 300222, People’s Republic of China
| | - Huiren Hu
- Tianjin University of Science and Technology, 13th
Street, Binhai, Tianjin 300222, People’s Republic of China
| | - Shuo Yang
- Tianjin University of Science and Technology, 13th
Street, Binhai, Tianjin 300222, People’s Republic of China
| | - Fei Cheng
- Tianjin University of Science and Technology, 13th
Street, Binhai, Tianjin 300222, People’s Republic of China
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18
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Zhu J, Zhu H, Njuguna J, Abhyankar H. Recent Development of Flax Fibres and Their Reinforced Composites Based on Different Polymeric Matrices. MATERIALS (BASEL, SWITZERLAND) 2013; 6:5171-5198. [PMID: 28788383 PMCID: PMC5452774 DOI: 10.3390/ma6115171] [Citation(s) in RCA: 143] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/02/2013] [Revised: 09/26/2013] [Accepted: 10/14/2013] [Indexed: 11/17/2022]
Abstract
This work describes flax fibre reinforced polymeric composites with recent developments. The properties of flax fibres, as well as advanced fibre treatments such as mercerization, silane treatment, acylation, peroxide treatment and coatings for the enhancement of flax/matrix incompatibility are presented. The characteristic properties and characterizations of flax composites on various polymers including polypropylene (PP) and polylactic acid, epoxy, bio-epoxy and bio-phenolic resin are discussed. A brief overview is also given on the recent nanotechnology applied in flax composites.
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Affiliation(s)
- Jinchun Zhu
- Centre of Automotive Technology, Cranfield University, Cranfield, MK43 0AL, UK.
| | - Huijun Zhu
- Cranfiled Health, Cranfield University, Cranfield, MK43 0AL, UK.
| | - James Njuguna
- Institute for Innovation, Design and Sustainability, Robert Gordon University, Aberdeen AB10 7GJ, UK.
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19
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Hydrophobic properties conferred to Kraft pulp by a laccase-catalysed treatment with lauryl gallate. J Biotechnol 2013; 167:302-8. [DOI: 10.1016/j.jbiotec.2013.07.014] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2012] [Revised: 07/09/2013] [Accepted: 07/10/2013] [Indexed: 11/23/2022]
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20
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21
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Peng D, Lan Z, Guo C, Yang C, Dang Z. Application of cellulase for the modification of corn stalk: leading to oil sorption. BIORESOURCE TECHNOLOGY 2013; 137:414-8. [PMID: 23618599 DOI: 10.1016/j.biortech.2013.03.178] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/21/2013] [Revised: 03/24/2013] [Accepted: 03/27/2013] [Indexed: 05/26/2023]
Abstract
In this work, a new biotechnological procedure was developed using cellulase as a modifier to produce oil sorbent from corn stalk (CMCS). Cellulase treatment of raw corn stalk (RCS) with enzyme loading of 100 U/g at 45°C for 6h resulted in high oil sorption capacity. The sorption capacities of vegetable oil, diesel and crude oil by CMCS were 18.47, 16.15 and 27.23 g/g, respectively, which were found to be much higher than RCS. XRD, BET and SEM were applied to characterize RCS and CMCS. The effects of sorbent dose (0.1-0.5 g), initial oil amount (5-30 g), and the sorption kinetics were also studied. This work demonstrated that corn stalk modified by cellulase is an efficient and environment-friendly biosorbent for the removal of spilled oil.
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Affiliation(s)
- Dan Peng
- College of Environmental Science and Engineering, South China University of Technology, Guangzhou 510006, PR China
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22
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Guo YH, Guo JJ, Li SC, Li X, Wang GS, Huang Z. Properties and paper sizing application of waterborne polyurethane emulsions synthesized with TDI and IPDI. Colloids Surf A Physicochem Eng Asp 2013. [DOI: 10.1016/j.colsurfa.2013.03.017] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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23
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Garcia-Ubasart J, Vidal T, Torres AL, Rojas OJ. Laccase-Mediated Coupling of Nonpolar Chains for the Hydrophobization of Lignocellulose. Biomacromolecules 2013; 14:1637-44. [DOI: 10.1021/bm400291s] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Jordi Garcia-Ubasart
- Textile and Paper
Engineering
Department, ETSEIAT, Universitat Politècnica de Catalunya, E-08222 Terrassa, Spain
| | - Teresa Vidal
- Textile and Paper
Engineering
Department, ETSEIAT, Universitat Politècnica de Catalunya, E-08222 Terrassa, Spain
| | - Antonio L. Torres
- Textile and Paper
Engineering
Department, ETSEIAT, Universitat Politècnica de Catalunya, E-08222 Terrassa, Spain
| | - Orlando J. Rojas
- Departments of Forest Biomaterials
and Chemical and Biomolecular Engineering, North Carolina State University, Raleigh, North Carolina 27695-8005,
United States
- School of Science
and Technology,
Department of Forest Products Technology, Aalto University, 00076 Aalto, Finland
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24
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Cusola O, Valls C, Vidal T, Roncero MB. Application of surface enzyme treatments using laccase and a hydrophobic compound to paper-based media. BIORESOURCE TECHNOLOGY 2013; 131:521-526. [PMID: 23453234 DOI: 10.1016/j.biortech.2012.12.186] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/20/2012] [Revised: 12/27/2012] [Accepted: 12/28/2012] [Indexed: 06/01/2023]
Abstract
A new approach for the hydrophobization of finished cellulosic substrates based on a previously reported enzymatic technique is proposed. Commercial finished paper was hydrophobized by using laccase from Trametes villosa in combination with lauryl gallate (LG) as hydrophobic compound. The efficiency of the method was increased by the use of a lignosulfonate as a natural dispersant to improve the surface distribution of LG on the paper, raise its hydrophobicity and help preserve the enzyme activity. No similar threefold effect from a single compound for the improvement of enzymatic treatments was previously reported. The influence of processing conditions including the LG dose, treatment time and temperature was also examined, resulting in further increased hydrophobicity. Efficient fiber bonding and chemical functionalization were confirmed by thorough washing and Soxhlet extraction of the paper. As shown here for the first time, enzyme treatments have the potential to improve the surface hydrophobicity of paper-based media.
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Affiliation(s)
- Oriol Cusola
- Textile and Paper Engineering Department, Universitat Polite`cnica de Catalunya, BarcelonaTech, Colom 11, E-08222 Terrassa, Spain
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