Comparison of Different Methods of Crosslinking Sodium Caseinate Films

MARIANA PEREDA; NORMA MARCOVICH; MIRTA I. ARANGUREN

Siegen, Germany

Otro; POLYCHAR18 - World Forum on Advanced Materials; 2010

The goal of this work was to investigate different methods to crosslink sodium caseinate (NaCas) films, by analyzing and comparing the final properties of the films (potentially useful as food packaging): mechanical, water vapor sorption and permeability. The crosslinking chosen methods were: a) use of glutaraldehyde (GTA) as chemical crosslinker, b) thermal treatment, c) complexation with a polysaccharide (chitosan, Chit). The films were obtained by a casting/solvent evaporation method from dilute aqueous solutions, using glycerol (28 wt%) as plasticizer.