Accéder directement au contenu Accéder directement à la navigation
Article dans une revue

Regioselective Acylation of Levoglucosan Catalyzed by Candida Antarctica (CaLB) Lipase Immobilized on Epoxy Resin

Abstract : Every year, a large amount of residual agroindustrial waste has been generated and only around 10% is in fact reused. The development of new strategies for biomass valorization is important to add value to these commodities, since biomass is an excellent alternative feedstock to obtain chemicals of interest from renewable resources. The major compound of pyrolytic treatment of lignocellulosic biomass is levoglucosan (1,6-anhydroglucopyranose), an anhydro-sugar that can be transformed into glucose and is greatly valued in the most diverse industrial sectors as a surfactant, emulsifier, or even a lubricant. In this work, levoglucosan was acylated by lipase-catalyzed transesterification in acetonitrile with great conversions and selectivities with different acyl donors such as ethyl esters of lauric, palmitic, stearic, and oleic acids prepared in situ in an integrated strategy mediated by commercial lipases Novozym435 (N435), PSIM, and the home-made biocatalyst CaLB_epoxy. As a result, all biocatalyst generated mostly monoesters, with N435 being more selective to produce lauric esters (99% at 50°C) and PSIM to produce oleic esters (97% at 55 °C) while CaLB_epoxy was more selective to produce oleic esters of levoglucosan (83% at 55°C). This is the first report in the literature on the production of high selectivity levoglucosan esters.
Type de document :
Article dans une revue
Domaine :
Liste complète des métadonnées

https://hal.univ-lille.fr/hal-03025754
Contributeur : Lilloa Université de Lille <>
Soumis le : jeudi 26 novembre 2020 - 13:53:24
Dernière modification le : mercredi 17 février 2021 - 09:56:08
Archivage à long terme le : : samedi 27 février 2021 - 19:14:58

Fichier

sustainability-11-06044-v2.pdf
Fichiers éditeurs autorisés sur une archive ouverte

Licence


Distributed under a Creative Commons Paternité 4.0 International License

Identifiants

Collections

Citation

Marcelo Avelar Do Nascimento, Larissa Ester Gotardo, Eduardo Miguez Bastos, Fabio C. L. Almeida, Raquel A. C. Leão, et al.. Regioselective Acylation of Levoglucosan Catalyzed by Candida Antarctica (CaLB) Lipase Immobilized on Epoxy Resin. Sustainability, 2019, Sustainability, 11 (21), pp.6044. ⟨10.3390/su11216044⟩. ⟨hal-03025754⟩

Partager

Métriques

Consultations de la notice

35

Téléchargements de fichiers

67