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Article dans une revue

IL versus DES: Impact on chitin pretreatment to afford high quality and highly functionalizable chitosan

Abstract : Chitin is mainly extracted from crustaceans, but this resource is seasonally dependent and can represent a major drawback to satisfy the traceability criterion for high valuable applications. Insect resources are valuable alternatives due to their lower mineral content. However, the deacetylation of chitin into chitosan is still an expensive process. Therefore, we herein compare the impact of both DES/IL-pretreatments on the efficiency of the chemical deacetylation of chitin carried out over two insect sources (Bombyx eri, BE and Hermetia illucens, HI) and shrimp shells (S). The results showed that chitosans obtained from IL-pretreated chitins from BE larva, present lower acetylation degrees (13-17%) than DES-pretreated samples (18-27%). A selective N-acylation reaction with oleic acid has also been performed on the purest and most deacetylated chitosans leading to high substitution degrees (up to 27%). The overall approach validates the proper chitin source and processing methodology to achieve high quality and highly functionalizable chitosan.
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https://hal-u-picardie.archives-ouvertes.fr/hal-03612247
Contributeur : Louise Dessaivre Connectez-vous pour contacter le contributeur
Soumis le : jeudi 17 mars 2022 - 15:46:49
Dernière modification le : mercredi 27 avril 2022 - 04:03:22

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Gael Huet, Caroline Hadad, Jose M. Gonzalez-Dominguez, Matthieu Courty, Arash Jamali, et al.. IL versus DES: Impact on chitin pretreatment to afford high quality and highly functionalizable chitosan. CARBOHYDRATE POLYMERS, 2021, 269, ⟨10.1016/j.carbpol.2021.118332⟩. ⟨hal-03612247⟩

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