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dc.contributor.author
Astoreca, Andrea Luciana
dc.contributor.author
Barberis, Carla Lorena
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Magnoli, Carina Elizabeth
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Dalcero, Ana Maria
dc.date.available
2019-01-22T18:43:36Z
dc.date.issued
2010-02
dc.identifier.citation
Astoreca, Andrea Luciana; Barberis, Carla Lorena; Magnoli, Carina Elizabeth; Dalcero, Ana Maria; Growth and ochratoxin A production by Aspergillus niger group strains in coffee beans in relation to environmental factors; Wageningen Academic Publishers; World Mycotoxin Journal; 3; 1; 2-2010; 59-65
dc.identifier.issn
1875-0796
dc.identifier.uri
http://hdl.handle.net/11336/68406
dc.description.abstract
The effect of water activity (aW), temperature and their interactions on lag phase, mycelial growth rate and ochratoxin A (OTA) production at 7, 14 and 21 days of incubation of two OTA-producer strains belonging to Aspergillus niger group on irradiated coffee beans was determined. Irradiated coffee beans were re-hydrated to 0.910-0.995 of aW with sterile distilled water. The temperatures assayed were 15, 25 and 30 °C. Growth assessment was measured every day during the incubation period to calculate the growth rate. OTA production was examined at 7, 14 and 21 days by high-performance liquid chromatography. Optimal aW for growth was 0.995 at 25 °C for RCC4 and RCC20 strains, being 1.10 and 2.36 mm/day, respectively. OTA concentration varied considerably depending on aW, temperature and incubation time assayed. Maximum OTA production was obtained at 0.973 and 0.995 aW at 30 °C for both strains. The results of the present work indicate that knowledge of the optimal and marginal conditions of black Aspergillus growth and OTA production allow methods to be established for preventing the development of these fungal and mycotoxin production on coffee beans. The data obtained provide useful information for predicting the risk factors for OTA contamination on coffee beans.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Wageningen Academic Publishers
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Aspergillus Section Nigri
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Coffee Beans
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Growth Rate
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Ochratoxin A
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Temperature
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Water Activity
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Otras Ciencias Biológicas
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Ciencias Biológicas
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CIENCIAS NATURALES Y EXACTAS
dc.title
Growth and ochratoxin A production by Aspergillus niger group strains in coffee beans in relation to environmental factors
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2019-01-22T15:12:25Z
dc.journal.volume
3
dc.journal.number
1
dc.journal.pagination
59-65
dc.journal.pais
Países Bajos
dc.description.fil
Fil: Astoreca, Andrea Luciana. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas, Fisicoquímicas y Naturales. Departamento de Microbiología e Inmunología. Cátedra de Micología; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
dc.description.fil
Fil: Barberis, Carla Lorena. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas, Fisicoquímicas y Naturales. Departamento de Microbiología e Inmunología. Cátedra de Micología; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
dc.description.fil
Fil: Magnoli, Carina Elizabeth. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas, Fisicoquímicas y Naturales. Departamento de Microbiología e Inmunología. Cátedra de Micología; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
dc.description.fil
Fil: Dalcero, Ana Maria. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas, Fisicoquímicas y Naturales. Departamento de Microbiología e Inmunología. Cátedra de Micología; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
dc.journal.title
World Mycotoxin Journal
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.3920/WMJ2009.1161
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.wageningenacademic.com/doi/10.3920/WMJ2009.1161
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