Development and Characterization of Films with Propolis to Inhibit Mold Contamination in the Dairy Industry

Overview

Journal Foods

Specialty Biotechnology

Date 2023 Apr 28

PMID 37107428

Authors

Romina L Abarca

Francisco Vargas

Javiera Medina

Juan Carlos Paredes

Bernardo Carrillo Lopez

Pablo A Ortiz

Einar Vargas-Bello-Perez

Affiliations

Soon will be listed here.

Abstract

Due to the number of polyphenols with multiple biological activities, propolis has high potential to be used as an active agent in food protective films. Therefore, this study aimed to develop and characterize a sodium alginate film with ethanolic extract of propolis (EEP) for its potential use as protective active packaging against filamentous fungi in ripened cheese. Three different concentrations of EEP were analyzed: 0, 5 and 10% /. The films obtained were characterized, assessing thermal and physicochemical properties, as well as the concentration of polyphenols in the EEP and antifungal activity of the active films. The incorporation of EEP in the films generated thermal stability with respect to the loss of mass. Total color values (ΔE) of the films were affected by the incorporation of the different concentrations of EEP, showing a decrease in luminosity (L*) of the films, while the chromatic parameters a* and b* increased in direct proportion to the EEP concentration. Antifungal activity was observed with a fungistatic mode of action, stopping the growth of the fungus in cheeses without development of filamentous molds, thus increasing the shelf life of the ripened cheese under the analytical conditions, over 30 days at room temperature. Overall, EEP can be used to prevent growth and proliferation of spoilage microorganisms in cheese.

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