Fiche publication
Date publication
octobre 2023
Journal
Polymers
Auteurs
Membres identifiés du Cancéropôle Est :
Mr LECLERC Sébastien
Tous les auteurs :
Bennacef C, Desobry S, Jasniewski J, Leclerc S, Probst L, Desobry-Banon S
Lien Pubmed
Résumé
Two types of alginates, AlgLF and AlgP, were used in this study to produce alginate beads by electro-vibratory extrusion. AlgLF and AlgP exhibited different Mannuronate/Guluronate (M/G) ratios and molecular weights as measured by NMR and SEC-MALS. The calcium chloride concentration was found to have the greatest effect on bead size. Higher concentrations resulted in smaller beads. AlgLF with a higher molecular weight and a lower proportion of G blocks showed smaller beads. For both alginates, the bead size was also influenced by the flow rate and vibration frequency. Alginate solution aging showed a minimal effect. Alginate reticulation was modeled using a mathematical equation. The study provides insights for the optimization of alginate-based materials in different applications by shedding light on the main factors influencing bead size. The importance of the molecular weight, M/G ratio and calcium ion concentration in the gelling process is highlighted, providing opportunities for the tailoring of alginate materials through a phenomenological model.
Mots clés
M/G ratio, alginate, alginate bead size, ionic gelation, modeling, molecular weight, phenomenological model, response surface method
Référence
Polymers (Basel). 2023 10 20;15(20):
