Evento
Pinturas fotocatalíticas para la inactivación de fagos de bacterias lácticas
Jacob, María Fiorella
; Quiberoni, Andrea del Lujan
; Ballari, Maria de Los Milagros
; Briggiler Marcó, Mariángeles
Tipo del evento:
Congreso
Nombre del evento:
VIII Congreso Internacional de Ciencia y Tecnología de los Alimentos
Fecha del evento:
16/10/2022
Institución Organizadora:
Ministerio de Ciencia y Tecnología de la Provincia de Córdoba;
Título del Libro:
Libro de Resúmenes: VIII Congreso Internacional de Ciencia y Tecnología de los Alimentos
Editorial:
Ministerio de Ciencia y Tecnología de la Provincia de Córdoba
ISBN:
978-987-47203-5-1
Idioma:
Español
Clasificación temática:
Resumen
Phage infections can cause severe problems against fermentative processes in the dairy industry due to cell lysis of the starter cultures. The aim of this work was to investigate the inactivation of nine phages infective to lactic acid bacteria applying photocatalytic paints irradiated with visible light (λ 360-720 nm). To elaborate the paints, anatase form of titanium dioxide containing carbon as doping agent (18% w/w) was used in replacement of the normal paint pigments, then the paints showed photocatalytic activity in the UV-VIS spectrum. The assays were carried out in a laboratory reactor at constant humidity and temperature (80%, 30°C). Phages were placed on plates covered with the paint and subjected to visible radiation.Samples were taken at different times and phage enumerations (plaque-forming units per mL, PFU/mL) were determined by the double-layer plaque titration method. A total inactivation (< 50 PFU/mL) for five phages (within 2-5 h) were obtained. On the other hand, four phages partially reduced their infectivity between 2.9 and 5.9 orders log. The results obtained in this work showed the efficiency of the photocatalytic paints in the inactivation of dairy phage. These paints could be applied on interior walls and diverse industrial surfaces, as an alternative to decrease the risk of phage infections in the dairy industry. This will contribute to decrease the phage load of bioaerosols, which constitute the main dissemination via of phages in industrial environments.
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Eventos(INLAIN)
Eventos de INST.DE LACTOLOGIA INDUSTRIAL
Eventos de INST.DE LACTOLOGIA INDUSTRIAL
Eventos(INTEC)
Eventos de INST.DE DES.TECNOL.PARA LA IND.QUIMICA (I)
Eventos de INST.DE DES.TECNOL.PARA LA IND.QUIMICA (I)
Citación
Pinturas fotocatalíticas para la inactivación de fagos de bacterias lácticas; VIII Congreso Internacional de Ciencia y Tecnología de los Alimentos; Córdoba; Argentina; 2022; 652-653
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