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dc.contributor.author
Pena, Gabriela Alejandra
dc.contributor.author
Monge, Maria del Pilar
dc.contributor.author
Landa, Maria Florencia
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Dalcero, Ana Maria
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Rosa, Carlos Alberto da Rocha
dc.contributor.author
Cavaglieri, Lilia Reneé
dc.date.available
2018-05-31T20:06:30Z
dc.date.issued
2015-01-22
dc.identifier.citation
Pena, Gabriela Alejandra; Monge, Maria del Pilar; Landa, Maria Florencia; Dalcero, Ana Maria; Rosa, Carlos Alberto da Rocha; et al.; Growth and gliotoxin production by feed-borne Aspergillus fumigatus sensu stricto strains under different interacting environmental conditions; Wageningen Academic Publishers; World Mycotoxin Journal; 8; 1; 22-1-2015; 75-85
dc.identifier.issn
1875-0710
dc.identifier.uri
http://hdl.handle.net/11336/46900
dc.description.abstract
In this study the effects of temperature, oxygen tension, water activity (aW), pH, incubation time and their interactions on (1) the lag phase prior to growth, (2) growth rate and (3) gliotoxin production of two feed-borne Aspergillus fumigatus sensu stricto strains, isolated from fermented maize silage and brewer's grains, were evaluated on an agar medium based on these substrates. Regardless of oxygen tension, the growth rate of the two strains decreased significantly as temperature and aW decreased (P<0.05). The optimum conditions for A. fumigatus growth were 37 °C, 0.98 aW for both strains at reduced oxygen tension, regardless of pH level (P<0.05). The studied A. fumigatus strains were able to grow under several incubation conditions, some of them prevalent in stored animal feeds. Some specific interactions that allowed accumulation of gliotoxin at high levels were found. This study showed that gliotoxin production occurred at more restricted conditions than fungal growth. This fact is important, as by maintaining the appropriate conditions in animal feeds, A. fumigatus growth and gliotoxin production can be prevented. In this study, growth rates, lag phases prior to growth and gliotoxin production over a range of environmental conditions provide useful information that can help in predicting the possible fungal contamination of fermented animal feeds. Furthermore, the information is relevant since A. fumigatus is an opportunistic pathogen found in cereals and fermented animal feeds and represents a high risk of contamination to animals and farm workers who handle them improperly.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Wageningen Academic Publishers
dc.rights
info:eu-repo/semantics/restrictedAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Growth Rate
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Lag Phase
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Opportunistic Pathogen
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Stored Animal Feeds
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Animals
dc.subject.classification
Otras Ciencias Biológicas
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Ciencias Biológicas
dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
dc.title
Growth and gliotoxin production by feed-borne Aspergillus fumigatus sensu stricto strains under different interacting environmental conditions
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2018-05-09T14:07:37Z
dc.identifier.eissn
1875-0796
dc.journal.volume
8
dc.journal.number
1
dc.journal.pagination
75-85
dc.journal.pais
Países Bajos
dc.journal.ciudad
Wageningen
dc.description.fil
Fil: Pena, Gabriela Alejandra. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas, Fisicoquímicas y Naturales. Departamento de Microbiología e Inmunología; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Nordeste; Argentina
dc.description.fil
Fil: Monge, Maria del Pilar. Universidad Nacional de Rio Cuarto. Facultad de Ciencias Exactas Fisicoquímicas y Naturales. Departamento de Química y Física; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
dc.description.fil
Fil: Landa, Maria Florencia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Nordeste; Argentina. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas, Fisicoquímicas y Naturales. Departamento de Microbiología e Inmunología; Argentina
dc.description.fil
Fil: Dalcero, Ana Maria. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Nordeste; Argentina. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas, Fisicoquímicas y Naturales. Departamento de Microbiología e Inmunología; Argentina
dc.description.fil
Fil: Rosa, Carlos Alberto da Rocha. Universidade Federal do Rio de Janeiro; Brasil. Conselho Nacional de Pesquisas Científicas; Brasil
dc.description.fil
Fil: Cavaglieri, Lilia Reneé. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Nordeste; Argentina. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas, Fisicoquímicas y Naturales. Departamento de Microbiología e Inmunología; Argentina
dc.journal.title
World Mycotoxin Journal
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.wageningenacademic.com/doi/abs/10.3920/WMJ2013.1629
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/https://doi.org/10.3920/WMJ2013.1629


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