| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Michaud, Philippe
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (24/24 displayed)
- 2024Exploring temperature effects on raw polysaccharide in semi-diluted solution using complex conductivity ; Exploring temperature effects on raw polysaccharide in semi-diluted solution using complex conductivity: Correlation analysis of activation energiescitations
- 2023Modification of a Marine Pine Kraft Lignin Sample by Enzymatic Treatment with a Pycnoporus cinnabarinus Laccasecitations
- 2023Modification of a Marine Pine Kraft Lignin Sample by Enzymatic Treatment with a Pycnoporus cinnabarinus Laccasecitations
- 2023Thermal, Morphological and Mechanical Properties of a BioPE Matrix Composite: Case of Shell, Pulp, and Argan Cake as Biofillerscitations
- 2022Green polymers filaments for 3D-printingcitations
- 2022Development of a 3D model to predict curing dimensions and conversion rates of curable ceramic systems during stereolithography 3D printing processcitations
- 2022Green polymer filaments for 3D printingcitations
- 2022Effects of Kraft lignin and corn cob agro-residue on the properties of injected-moulded biocompositescitations
- 2022Effects of Kraft lignin and corn cob agro-residue on the properties of injected-moulded biocompositescitations
- 2021Chitosan-Based Adhesive: Optimization of Tensile Shear Strength in Dry and Wet Conditionscitations
- 2021Numerical prediction of elastic properties for alumina green parts printed by stereolithography processcitations
- 2021Hybridization of additive manufacturing processes to build ceramic/metal parts: Example of HTCCcitations
- 2019Valorization of Kraft Lignin and Corn Cob by-Products into PLA-Matrix based Biocomposites: Characterisation of Injected-moulded Specimens
- 2019Modification of Chitosan for the Generation of Functional Derivativescitations
- 2019Comparison Study between Batch and Continuous Processes to Obtain Chitosan-Based High Porous Biomaterial for Biological Applicationscitations
- 2018X-ray microtomography applied to bio-based composites made of by-products from forest and agricultural industries
- 2018X-ray microtomography applied to bio-based composites made of by-products from forest and agricultural industries
- 2013Synthesis of consolidated materials from alkaline solutions and metakaolin: existence of domains in the Al–Si–K/O ternary diagramcitations
- 2012Application of optical methods to investigate the non-linear asymmetric behavior of ceramics exhibiting large strain to rupture by four-points bending testcitations
- 2012Application of optical methods to investigate the non-linear asymmetric behavior of ceramics exhibiting large strain to rupture by four-points bending testcitations
- 2011Structural characterization of geomaterial foams -- Thermal behaviorcitations
- 2011Structural characterization of geomaterial foams -- Thermal behaviorcitations
- 2011Microstructural effects associated to CTE mismatch for enhancing the thermal shock resistance of refractoriescitations
- 2007Separation and fractionation of oligouronides by shear-enhanced filtrationcitations
Places of action
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article
Modification of a Marine Pine Kraft Lignin Sample by Enzymatic Treatment with a Pycnoporus cinnabarinus Laccase
Abstract
<jats:p>Here, we report work on developing an enzymatic process to improve the functionalities of industrial lignin. A kraft lignin sample prepared from marine pine was treated with the high-redox-potential laccase from the basidiomycete fungus Pycnoporus cinnabarinus at three different concentrations and pH conditions, and with and without the chemical mediator 1-hydroxybenzotriazole (HBT). Laccase activity was tested in the presence and absence of kraft lignin. The optimum pH of PciLac was initially 4.0 in the presence and absence of lignin, but at incubation times over 6 h, higher activities were found at pH 4.5 in the presence of lignin. Structural changes in lignin were investigated by Fourier-transform infrared spectroscopy (FTIR) with differential scanning calorimetry (DSC), and solvent-extractable fractions were analyzed using high-performance size-exclusion chromatography (HPSEC) and gas chromatography–mass spectrometry (GC–MS). The FTIR spectral data were analyzed with two successive multivariate series using principal component analysis (PCA) and ANOVA statistical analysis to identify the best conditions for the largest range of chemical modifications. DSC combined with modulated DSC (MDSC) revealed that the greatest effect on glass transition temperature (Tg) was obtained at 130 U g cm−1 and pH 4.5, with the laccase alone or combined with HBT. HPSEC data suggested that the laccase treatments led to concomitant phenomena of oligomerization and depolymerization, and GC–MS revealed that the reactivity of the extractable phenolic monomers depended on the conditions tested. This study demonstrates that P. cinnabarinus laccase can be used to modify marine pine kraft lignin, and that the set of analytical methods implemented here provides a valuable tool for screening enzymatic treatment conditions.</jats:p>