Abstract

GONZALEZ-CUELLO, Rafael; GUARDO-PALOMINO, Fidel  and  QUINTANA-MARTINEZ, Somaris. Active biofilms of aqueous extract of Gliricidia sepium and its influence on the microbiological shelf life of coastal cheese. rev.udcaactual.divulg.cient. [online]. 2021, vol.24, n.1, e1467.  Epub Apr 21, 2021. ISSN 0123-4226.  https://doi.org/10.31910/rudca.v24.n1.2021.1467.

The elaboration of biofilms with bioactive properties is an interesting area in the field of food packaging. The aim of this study was to obtain active biofilms (AB) based on aqueous extract of Gliricidia sepium leaves and determine their effect on the microbiological shelf life of coastal cheese. For the manufacture of the AB, the aqueous extract was microencapsulated by means of ionic gelation and later incorporated in the biofilms. The coastal cheese’s shelf life was carried out by means of predictive microbiology using the Monod Hinshelwood model. The microcapsules had an average diameter of 273.786µm. The results showed an increase in the microbiological shelf life of 26.7 days in cheeses with AB stored at 7°C compared with control sample (without AB) confirming that the AB investigated exerts an inhibitory effect on the microorganisms causing deterioration in cheeses. For this reason, the methodology proposed here can be an alternative in the conservation of a perishable product such as coastal cheese.

Keywords : Biopolymers; Microencapsulation; Ionic gelation; Dairy products.

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