The Experts below are selected from a list of 246 Experts worldwide ranked by ideXlab platform
Caroline Rémond - One of the best experts on this subject based on the ideXlab platform.
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D-xylose and L-arabinose laurate esters : enzymatic synthesis, characterization and physico-chemical properties
Enzyme and Microbial Technology, 2018Co-Authors: Thomas Méline, Murielle Muzard, Magali Deleu, Harivony Rakotoarivonina, Richard Plantier-royon, Caroline RémondAbstract:Efficient enzymatic synthesis of D-xylose and L-arabinose lauryl mono- and Diesters has been achieved by transesterification reactions catalyzed by immobilized Candida antarctica lipase B as biocatalyst, in organic medium in the presence of D-xylose or L-arabinose and vinyl laurate at 50 °C. In case of L-arabinose, one monoester and one Diester were obtained in a 57 % overall yield. A more complex mixture was produced for D-xylose as two monoesters and two Diesters were synthesized in a 74.9 % global yield. The structures of all these pentose laurate esters was solved. Results demonstrated that the esterification first occurred regioselectively onto the primary hydroxyl groups. Pentose laurate esters exhibited interesting features such as low critical aggregation concentrations values all inferior to 25 µM. Our study demonstrates that the enzymatic production of L-arabinose and D-xylose-based esters represents an interesting approach for the production of green surfactants from lignocellulosic biomass-derived pentoses.
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d-Xylose and L-arabinose laurate esters: Enzymatic synthesis, characterization and physico-chemical properties
Enzyme and Microbial Technology, 2018Co-Authors: Thomas Méline, Murielle Muzard, Magali Deleu, Harivony Rakotoarivonina, Richard Plantier-royon, Caroline RémondAbstract:Efficient enzymatic synthesis of o-xylose and L-arabinose lauryl mono- and Diesters has been achieved by transesterification reactions catalysed by immobilized Candida antarctica lipase B as biocatalyst, in organic medium in the presence of o-xylose or L-arabinose and vinyllaurate at 50 degrees C. In case of L-arabinose, one monoester and one Diester were obtained in a 57% overall yield. A more complex mixture was produced for D-xylose as two monoesters and two Diesters were synthesized in a 74.9% global yield. The structures of all these pentose laurate esters was solved. Results demonstrated that the esterification first occurred regioselectively onto the primary hydroxyl groups. Pentose laurate esters exhibited interesting features such as low critical aggregation concentrations values all inferior to 25 mu M. Our study demonstrates that the enzymatic production of L-arabinose and D-xylose-based esters represents an interesting approach for the production of green surfactants from lignocellulosic biomass-derived pentoses.
Thomas Méline - One of the best experts on this subject based on the ideXlab platform.
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D-xylose and L-arabinose laurate esters : enzymatic synthesis, characterization and physico-chemical properties
Enzyme and Microbial Technology, 2018Co-Authors: Thomas Méline, Murielle Muzard, Magali Deleu, Harivony Rakotoarivonina, Richard Plantier-royon, Caroline RémondAbstract:Efficient enzymatic synthesis of D-xylose and L-arabinose lauryl mono- and Diesters has been achieved by transesterification reactions catalyzed by immobilized Candida antarctica lipase B as biocatalyst, in organic medium in the presence of D-xylose or L-arabinose and vinyl laurate at 50 °C. In case of L-arabinose, one monoester and one Diester were obtained in a 57 % overall yield. A more complex mixture was produced for D-xylose as two monoesters and two Diesters were synthesized in a 74.9 % global yield. The structures of all these pentose laurate esters was solved. Results demonstrated that the esterification first occurred regioselectively onto the primary hydroxyl groups. Pentose laurate esters exhibited interesting features such as low critical aggregation concentrations values all inferior to 25 µM. Our study demonstrates that the enzymatic production of L-arabinose and D-xylose-based esters represents an interesting approach for the production of green surfactants from lignocellulosic biomass-derived pentoses.
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d-Xylose and L-arabinose laurate esters: Enzymatic synthesis, characterization and physico-chemical properties
Enzyme and Microbial Technology, 2018Co-Authors: Thomas Méline, Murielle Muzard, Magali Deleu, Harivony Rakotoarivonina, Richard Plantier-royon, Caroline RémondAbstract:Efficient enzymatic synthesis of o-xylose and L-arabinose lauryl mono- and Diesters has been achieved by transesterification reactions catalysed by immobilized Candida antarctica lipase B as biocatalyst, in organic medium in the presence of o-xylose or L-arabinose and vinyllaurate at 50 degrees C. In case of L-arabinose, one monoester and one Diester were obtained in a 57% overall yield. A more complex mixture was produced for D-xylose as two monoesters and two Diesters were synthesized in a 74.9% global yield. The structures of all these pentose laurate esters was solved. Results demonstrated that the esterification first occurred regioselectively onto the primary hydroxyl groups. Pentose laurate esters exhibited interesting features such as low critical aggregation concentrations values all inferior to 25 mu M. Our study demonstrates that the enzymatic production of L-arabinose and D-xylose-based esters represents an interesting approach for the production of green surfactants from lignocellulosic biomass-derived pentoses.
Henri Cramail - One of the best experts on this subject based on the ideXlab platform.
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Solubility in CO(2) and carbonation studies of epoxidized fatty acid Diesters: towards novel precursors for polyurethane synthesis
Green Chemistry, 2010Co-Authors: Aurelie Boyer, Eric Cloutet, Thierry Tassaing, Carine Alfos, Benoît Gadenne, Henri CramailAbstract:Novel linear polyurethanes were synthesized by bulk polyaddition of diamines with two vegetable-based biscarbonates produced from oleic acid methyl ester. Internal carbonated fatty acid Diester (ICFAD) and terminal carbonated fatty acid Diester (TCFAD) were obtained by the reaction of their epoxide precursors with CO(2). Terminal epoxy fatty acid Diester (TEFAD) was found to be more soluble and more reactive in CO(2) than internal epoxy fatty acid Diester (IEFAD). Polyurethanes obtained by polyaddition of TCFAD and ICFAD with diamines exhibit molecular weights up to 13 500 g mol(-1) and glass transitions around -15 degrees C. Amide linkages were not observed when secondary diamine was used as the comonomer.
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solubility in co2 and carbonation studies of epoxidized fatty acid Diesters towards novel precursors for polyurethane synthesis
Green Chemistry, 2010Co-Authors: Aurelie Boyer, Eric Cloutet, Thierry Tassaing, Carine Alfos, Benoît Gadenne, Henri CramailAbstract:Novel linear polyurethanes were synthesized by bulk polyaddition of diamines with two vegetable-based biscarbonates produced from oleic acid methyl ester. Internal carbonated fatty acid Diester (ICFAD) and terminal carbonated fatty acid Diester (TCFAD) were obtained by the reaction of their epoxide precursors with CO2. Terminal epoxy fatty acid Diester (TEFAD) was found to be more soluble and more reactive in CO2 than internal epoxy fatty acid Diester (IEFAD). Polyurethanes obtained by polyaddition of TCFAD and ICFAD with diamines exhibit molecular weights up to 13 500 g mol−1 and glass transitions around −15 °C. Amide linkages were not observed when secondary diamine was used as the comonomer.
Murielle Muzard - One of the best experts on this subject based on the ideXlab platform.
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D-xylose and L-arabinose laurate esters : enzymatic synthesis, characterization and physico-chemical properties
Enzyme and Microbial Technology, 2018Co-Authors: Thomas Méline, Murielle Muzard, Magali Deleu, Harivony Rakotoarivonina, Richard Plantier-royon, Caroline RémondAbstract:Efficient enzymatic synthesis of D-xylose and L-arabinose lauryl mono- and Diesters has been achieved by transesterification reactions catalyzed by immobilized Candida antarctica lipase B as biocatalyst, in organic medium in the presence of D-xylose or L-arabinose and vinyl laurate at 50 °C. In case of L-arabinose, one monoester and one Diester were obtained in a 57 % overall yield. A more complex mixture was produced for D-xylose as two monoesters and two Diesters were synthesized in a 74.9 % global yield. The structures of all these pentose laurate esters was solved. Results demonstrated that the esterification first occurred regioselectively onto the primary hydroxyl groups. Pentose laurate esters exhibited interesting features such as low critical aggregation concentrations values all inferior to 25 µM. Our study demonstrates that the enzymatic production of L-arabinose and D-xylose-based esters represents an interesting approach for the production of green surfactants from lignocellulosic biomass-derived pentoses.
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d-Xylose and L-arabinose laurate esters: Enzymatic synthesis, characterization and physico-chemical properties
Enzyme and Microbial Technology, 2018Co-Authors: Thomas Méline, Murielle Muzard, Magali Deleu, Harivony Rakotoarivonina, Richard Plantier-royon, Caroline RémondAbstract:Efficient enzymatic synthesis of o-xylose and L-arabinose lauryl mono- and Diesters has been achieved by transesterification reactions catalysed by immobilized Candida antarctica lipase B as biocatalyst, in organic medium in the presence of o-xylose or L-arabinose and vinyllaurate at 50 degrees C. In case of L-arabinose, one monoester and one Diester were obtained in a 57% overall yield. A more complex mixture was produced for D-xylose as two monoesters and two Diesters were synthesized in a 74.9% global yield. The structures of all these pentose laurate esters was solved. Results demonstrated that the esterification first occurred regioselectively onto the primary hydroxyl groups. Pentose laurate esters exhibited interesting features such as low critical aggregation concentrations values all inferior to 25 mu M. Our study demonstrates that the enzymatic production of L-arabinose and D-xylose-based esters represents an interesting approach for the production of green surfactants from lignocellulosic biomass-derived pentoses.
Magali Deleu - One of the best experts on this subject based on the ideXlab platform.
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D-xylose and L-arabinose laurate esters : enzymatic synthesis, characterization and physico-chemical properties
Enzyme and Microbial Technology, 2018Co-Authors: Thomas Méline, Murielle Muzard, Magali Deleu, Harivony Rakotoarivonina, Richard Plantier-royon, Caroline RémondAbstract:Efficient enzymatic synthesis of D-xylose and L-arabinose lauryl mono- and Diesters has been achieved by transesterification reactions catalyzed by immobilized Candida antarctica lipase B as biocatalyst, in organic medium in the presence of D-xylose or L-arabinose and vinyl laurate at 50 °C. In case of L-arabinose, one monoester and one Diester were obtained in a 57 % overall yield. A more complex mixture was produced for D-xylose as two monoesters and two Diesters were synthesized in a 74.9 % global yield. The structures of all these pentose laurate esters was solved. Results demonstrated that the esterification first occurred regioselectively onto the primary hydroxyl groups. Pentose laurate esters exhibited interesting features such as low critical aggregation concentrations values all inferior to 25 µM. Our study demonstrates that the enzymatic production of L-arabinose and D-xylose-based esters represents an interesting approach for the production of green surfactants from lignocellulosic biomass-derived pentoses.
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d-Xylose and L-arabinose laurate esters: Enzymatic synthesis, characterization and physico-chemical properties
Enzyme and Microbial Technology, 2018Co-Authors: Thomas Méline, Murielle Muzard, Magali Deleu, Harivony Rakotoarivonina, Richard Plantier-royon, Caroline RémondAbstract:Efficient enzymatic synthesis of o-xylose and L-arabinose lauryl mono- and Diesters has been achieved by transesterification reactions catalysed by immobilized Candida antarctica lipase B as biocatalyst, in organic medium in the presence of o-xylose or L-arabinose and vinyllaurate at 50 degrees C. In case of L-arabinose, one monoester and one Diester were obtained in a 57% overall yield. A more complex mixture was produced for D-xylose as two monoesters and two Diesters were synthesized in a 74.9% global yield. The structures of all these pentose laurate esters was solved. Results demonstrated that the esterification first occurred regioselectively onto the primary hydroxyl groups. Pentose laurate esters exhibited interesting features such as low critical aggregation concentrations values all inferior to 25 mu M. Our study demonstrates that the enzymatic production of L-arabinose and D-xylose-based esters represents an interesting approach for the production of green surfactants from lignocellulosic biomass-derived pentoses.