Electron beam irradiation of maltodextrin and cinnamyl alcohol mixtures: influence of glycerol on cross-linking.
Fiche publication
Date publication
mars 2015
Journal
Carbohydrate polymers
Auteurs
Membres identifiés du Cancéropôle Est :
Pr COQUERET Xavier
Tous les auteurs :
Khandal D, Aggarwal M, Suri G, Coqueret X
Lien Pubmed
Résumé
The influence of glycerol on the electron beam-induced changes in maltodextrins-cinnamyl alcohol (CA) blends is examined with respect to its influence on the degree of chain scission, grafting, and cross-linking. The study is relevant to radiation-induced polysaccharide modification, specifically in the perspective of using blended starch as a thermoplastic material, where glycerol is commonly used as a plasticizer. In the absence of CA, glycerol protects maltodextrin from chromophore formation onto the main chain, but also induces more chain scission. The presence of CA provides efficient radiation-protection against scission. Glycerol is shown to affect the interaction between maltodextrin and CA, most likely in the form of an inclusion complex when glycerol is absent. The global behavior under radiation is therefore governed by the physical interactions between the blend constituents rather than on the role of glycerol role as a plasticizer, or as an OH˙ radical scavenger.
Mots clés
Electrons, Glycerol, chemistry, Polysaccharides, chemistry, Propanols, chemistry, Water, chemistry
Référence
Carbohydr Polym. 2015 Mar 6;117:150-9