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dc.contributor.author
Astoreca, Andrea Luciana
dc.contributor.author
Vaamonde, Graciela
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Dalcero, Ana Maria
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Ramos, A. J.
dc.contributor.author
Marin, S.
dc.date.available
2017-08-18T18:17:05Z
dc.date.issued
2012-03-08
dc.identifier.citation
Astoreca, Andrea Luciana; Vaamonde, Graciela; Dalcero, Ana Maria; Ramos, A. J.; Marin, S.; Modelling the effect of temperature and water activity of Aspergillus flavus isolates from corn; Elsevier Science; International Journal of Food Microbiology; 156; 1; 8-3-2012; 60-67
dc.identifier.issn
0168-1605
dc.identifier.uri
http://hdl.handle.net/11336/22670
dc.description.abstract
The aim of this study was to model the effects of temperature (10–40 °C) and aw (0.80–0.98), in two media (Czapek yeast agar: CYA; corn extract medium: CEM) on the growth rates and growth boundaries (growth–no growth interface) of three strains of A. flavus isolated from corn in Argentina. Both kinetic and probability models were applied to colony growth data. The growth rates obtained in CYA were significantly (p < 0.05) greater than those obtained in CEM medium. No significant differences (p < 0.05) were observed among the three isolates. The growth rate data showed a good fit to the Rosso cardinal models combined with the gamma-concept with R2 = 0.98–0.99 and RMSE = 0.60–0.78, depending on media and isolates. The probability model allowed prediction of safe storage (p of growth < 0.01) for one month for moist maize (e.g. 0.90 aw) provided temperature is under 15 °C, or for dry maize (e.g. 0.80 aw) provided temperature is under 27 °C. Storage at < 0.77 aw would be safe regardless of the storage temperature. Probability models allow evaluation of the risk of fungal contamination in the process of storage, so the results obtained in this study may be useful for application in systems of food safety management.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Elsevier Science
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Aspergillus Flavus
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Kinetic Model
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Aw
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Temperature
dc.subject.classification
Alimentos y Bebidas
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Otras Ingenierías y Tecnologías
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INGENIERÍAS Y TECNOLOGÍAS
dc.title
Modelling the effect of temperature and water activity of Aspergillus flavus isolates from corn
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2017-06-29T13:32:12Z
dc.identifier.eissn
1879-3460
dc.journal.volume
156
dc.journal.number
1
dc.journal.pagination
60-67
dc.journal.pais
Países Bajos
dc.journal.ciudad
Amsterdam
dc.description.fil
Fil: Astoreca, Andrea Luciana. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Química Orgánica; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - la Plata. Centro de Investigación y Desarrollo En Fermentaciones Industriales. Universidad Nacional de la Plata. Facultad de Cs.exactas. Centro de Investigación y Desarrollo En Fermentaciones Industriales; Argentina
dc.description.fil
Fil: Vaamonde, Graciela. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Química Orgánica; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Micología y Botánica. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Micología y Botánica; Argentina
dc.description.fil
Fil: Dalcero, Ana Maria. Universidad Nacional de Rio Cuarto. Facultad de Ciencias Exactas Fisicoquimicas y Naturales; Argentina
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Fil: Ramos, A. J.. Universidad de Lleida; España
dc.description.fil
Fil: Marin, S.. Universidad de Lleida; España
dc.journal.title
International Journal of Food Microbiology
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0168160512001213
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.ijfoodmicro.2012.03.002
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