Effect of cellulose nanofibers concentration on mechanical, optical, and barrier properties of gelatin-based edible films

The effect of gelatin, glycerol, and cellulose nanofiber (CNFs) concentrations on the mechanical properties, water vapor permeability, and color parameters of films was evaluated. The results indicate that the color is only affected by the gelatin concentration. Mechanical tests indicated that with increasing concentration of gelatin and CNFs, there is an increase in tensile strength, whereas an increase in glycerol concentration causes an increase in elongation, making the films more flexible. An increased concentration of gelatin and glycerol makes the film more permeable to water vapor, while an increase in the concentration of CNFs reduces this property. Finally, the addition of CNFs to gelatin-based films improves their mechanical and barrier properties (water vapor) without affecting the appearance (color) of the films.

• Autores: Andrade Pizarro, Ricardo David; Skurtys, Olivier; Osorio-Lira, Fernando
• Tipo de recurso: Article of journal
• Fecha de publicación: 2015
• Institución: Universidad Nacional de Colombia
• Repositorio: Universidad Nacional de Colombia
• Idioma: spa
• OAI Identifier: oai:repositorio.unal.edu.co:unal/60712
• Acceso en línea: https://repositorio.unal.edu.co/handle/unal/60712; http://bdigital.unal.edu.co/59044/
• Palabra clave: 62 Ingeniería y operaciones afines / Engineering; barrier properties; tensile strength; elongation; color.
• Rights: openAccess
• License: Atribución-NoComercial 4.0 Internacional