info:eu-repo/semantics/article
Anti-E. coli cellulose-based materials
Fecha
2019-06Registro en:
Koltan, Mariano; Corbalan, Natalia Soledad; Molina, Vanesa Magali; Elisei, Alejandra; de Titto, Guido Andrés; et al.; Anti-E. coli cellulose-based materials; Elsevier Science; LWT - Food Science and Technology; 107; 6-2019; 325-330
0023-6438
CONICET Digital
CONICET
Autor
Koltan, Mariano
Corbalan, Natalia Soledad
Molina, Vanesa Magali
Elisei, Alejandra
de Titto, Guido Andrés
Eisenberg, Patricia
Vincent, Paula Andrea
Pomares, Maria Fernanda
Blanco Massani, Mariana Raquel
Resumen
This work aimed to study Microcin J25(G12Y) (MccJ25(G12Y)) sorption to fibrous and microfibrillated cellulose (MFC) films for setting up anti-E. coli materials. The Freundlich model showed the best fit for both films, suggesting a physisorption process, and similar affinity between the peptide and both cellulose-based matrices, which in turn appeared to be equally heterogeneous. Migration studies showed complete release of MccJ25(G12Y) from the fibrous film after contact with water; meanwhile, the MFC film retained some activity after the experiment. Contact with fatty simulant had no impact on antimicrobial activity of fibrous film, whilst MFC showed a small decrease in its activity. However, MccJ25(G12Y) was not detected in the fatty simulant after active films contact. Fibrous and MFC films remained fully active during storage (3 weeks at 30 °C). Finally, MccJ25(G12Y) activated fibrous film showed controlled release in conditions simulating critical steps in salami production. The results obtained suggest that fibrous and MFC films activated with MccJ25(G12Y) have a significant potential for their use as anti-E. coli materials in food settings.