Preparation and characterization of hydrogel from deacetylated xanthan gum produced by Xanthomonas arboricola pv pruni 106

Xanthan gum is a water-soluble polysaccharide obtained by fermentation of the genus Xanthomonas with several properties, such as low-cost, biodegradability, biocompatibility and non-toxicity. However, an important limitation of xanthan gum-based biomaterials is the high swelling degree in solvent and the mechanical weakness, which results in biomaterial disintegration. For this reason, the aim of this work was to develop a hydrogel with reduced swelling degree. The xanthan gum produced by X. arboricola pv pruni 106 achieved a volumetric yield of 10.78 ± 0.27 g L−1. The content of acetyl group was relatively low, around 1.33%, which the deacetylation process reduced its level to 0.8%. The hydrogel was produced using deacetylated xanthan gum and glutaraldehyde as crosslinker. The xanthan gum-based hydrogel has shown lower swelling degree and higher apparent viscosity, overcoming the initial drawbacks of the xanthan gum in its nature form. Overall, the xanthan gum-based hydrogel has remained stable during the whole storage conditions.

• Autores: de Oliveira Molon, Bruna; de Oliveira Molon, Bianca; Oliveira Gonçalves, Janaina; Silveira Ribeiro, Eduardo; Silva Diaz, Patrícia
• Tipo de recurso: Article of investigation
• Fecha de publicación: 2022
• Institución: Corporación Universidad de la Costa
• Repositorio: REDICUC - Repositorio CUC
• Idioma: eng
• OAI Identifier: oai:repositorio.cuc.edu.co:11323/9974
• Acceso en línea: https://hdl.handle.net/11323/9974; https://repositorio.cuc.edu.co/
• Palabra clave: Deacetylation; Fick's diffusion; Stress relaxation; Swelling degree
• Rights: embargoedAccess
• License: Atribución-NoComercial-SinDerivadas 4.0 Internacional (CC BY-NC-ND 4.0)