Efecto de la Adición de Goma Gelana sobre las Propiedades de Barrera y Físico Mecánicas de Biopelículas Binarias

Abstract

The aim of this study was to characterize physico mechanical and water vapor barrier of biofilms based on carboxymethylcellulose (CMC) and xanthan gum (XG), formulated with various concentrations of low acyl gellan (LAG). The biofilms, were prepared by the casting method and then the water vapor permeability (WVP), elongation at break (EAB), tensile strength (TS), moisture and transparency were determined. The findings indicated that biofilms with low concentrations of LAG showed more desirable properties when is compared with the others formulations, because they yields biofilms with low moisture and WVP. In addition, these biofilms had high values of EAB and were more transparent. These results are promising and suggest the possibility of using tertiary mixtures of CMC, GX and LAG as a source of biodegradable packaging for food applications.