Antifungal activity of silver ions exchanged in mordenite

Authors
Chiericatti, Carolina; Basilico, Juan Carlos; Zapata de Basilico, Maria de la Luz; Zamaro, Juan Manuel
Publication Year
2014
Language
English
Format
article
Status
Published version
Description
We investigated the action of silver-exchanged mordenite (Ag–mordenite) against the growth of six fungi that are problematic in the food industry. The mould species studied were Rhizopus oryzae, Mucor circinelloides, Geotrichum candidum, and the yeasts were Saccharomyces cerevisiae, Debaryomyces hansenii and Zygosaccharomyces rouxii. Several instrumental methods (EPMA, XRD, XPS, TPR, AAS) were used for the characterization of Ag–mordenite in order to explain its antifungal activity. Results show that Ag–mordenite exerted an effective antifungal action due to a release of silver ions from the zeolite matrix, which acted directly on the walls of the microorganisms, being more effective than the free silver ions in solution. The yeasts were more sensitive than filamentous fungi, S. cerevisiae being the most susceptible specie whereas G. candidum was the more resistant.
Fil: Chiericatti, Carolina. Universidad Nacional del Litoral. Facultad de Ingeniería Química. Departamento de Química; Argentina
Fil: Basilico, Juan Carlos. Universidad Nacional del Litoral. Facultad de Ingeniería Química. Departamento de Química; Argentina
Fil: Zapata de Basilico, Maria de la Luz. Universidad Nacional del Litoral. Facultad de Ingeniería Química. Departamento de Química; Argentina
Fil: Zamaro, Juan Manuel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica ; Argentina
Subject
SILVER-ZEOLITE
FUNGI
XPS
MORDENITE
YEAST
Recubrimientos y Películas
Ingeniería de los Materiales
INGENIERÍAS Y TECNOLOGÍAS
Access level
Restricted access
License
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repository
CONICET Digital (CONICET)
Institution
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identifier
oai:ri.conicet.gov.ar:11336/31606