Obtención de biopelículas conteniendo extracto acuoso de Eucalyptus camaldulensis y su incidencia en la vida útil microbiológica de rodajas de Carica papaya L.

Abstract

Active biofilms were developed using aqueous extract of red Eucalyptus (Eucalyptus camaldulensis) in the form of microcapsules as antimicrobial agent, with the objective of increasing the microbiological shelf life of sliced papaya (Carica papaya). To estimate the shelf life, growth kinetics using indicator organisms were modeled using the equation of Baranyi and Robert by means of the DMFit program obtaining the kinetic parameters for microbial growth. Also the main compounds present in the aqueous extracts were determined employing gas chromatography. Finally, Hinshelwood-Monod equation was used to estimate the microbiological shelf life. The results indicated that the active biofilms can be used to preserve papaya slices because increments around 43 days were obtained in the microbiological shelf life of coated papaya.