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Abstract:

Thirty-five samples of poultry feeds and corresponding raw materials (maize, soybean and meat meal) from a processing plant were analyzed to evaluate the distribution and toxigenicity of Aspergillus section Flavi isolates. Mycological analysis of the samples indicated the presence of five fungal genera (Aspergillus, Penicillium, Fusarium, Cladosporium, and Eurotium). Aspergillus flavus was the predominant species being present in 48.5% of the analyzed samples. Ninety-one isolates belonging to Aspergillus section Flavi were isolated; ninety were identified as A. flavus and only one as A. parasiticus. Fifty-seven isolates were capable of producing sclerotia, 41 were identified as L-type strains and 16 as type S. Fifty-seven percent of the isolates produced AFB1 levels ranging from 0.05μg/kg to 27.7μg/kg whereas 86.8% produced CPA from 1.5μg/kg to 137.8μg/kg. L-strains produced from 0.05 to 14.8μg/kg of aflatoxin and type S produced levels from 0.05 to 1.65μg/kg. No significant differences in CPA production among S- and L-strains were observed. Sclerotial isolates produced AFB1 levels ranging between 0.05 and 27.7μg/kg and CPA levels from 3.8 to 47.3μg/kg. More than half of the A. flavus isolates were able to produce AFB and CPA simultaneously. Twenty percent of the 35 samples were contaminated with aflatoxin B1 whereas 34.3% were contaminated with CPA. The high rate of CPA producing isolates represents a potential risk of contamination with this toxin in poultry feeds. © 2011 Elsevier B.V.

Registro:

Documento: Artículo
Título:A survey on distribution and toxigenicity of Aspergillus section Flavi in poultry feeds
Autor:Astoreca, A.L.; Dalcero, A.M.; Pinto, V.F.; Vaamonde, G.
Filiación:Laboratorio de Microbiología de Alimentos, Departamento de Química, Orgánica, Área Bromatología, Facultad de Ciencias, Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Pabellón II, 3 Piso, Buenos Aires, Argentina
Departamento de Microbiología e Inmunología, Facultad de Ciencias Exactas, Físico-Químicas y Naturales, Universidad Nacional de Río Cuarto, Argentina
Palabras clave:Aflatoxins; Aspergillus section Flavi; Cyclopiazonic acid; Feeds; aflatoxin; cyclopiazonic acid; article; Aspergillus flavus; Cladosporium; Eurotium; feeding; food contamination; fungal strain; fungus isolation; Fusarium; maize; meat; nonhuman; Penicillium; soybean; species identification; statistical significance; Aflatoxins; Animal Feed; Animals; Aspergillus; Food Contamination; Indoles; Poultry; Soybeans; Zea mays; Aspergillus; Aspergillus flavus; Aspergillus parasiticus; Cladosporium; Eurotium; Fusarium; Glycine max; Penicillium; Zea mays
Año:2011
Volumen:146
Número:1
Página de inicio:38
Página de fin:43
DOI: http://dx.doi.org/10.1016/j.ijfoodmicro.2011.01.034
Título revista:International Journal of Food Microbiology
Título revista abreviado:Int. J. Food Microbiol.
ISSN:01681605
CODEN:IJFMD
CAS:aflatoxin, 1402-68-2; cyclopiazonic acid, 18172-33-3, 83136-88-3; Aflatoxins; Indoles; cyclopiazonic acid, 18172-33-3
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01681605_v146_n1_p38_Astoreca

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Citas:

---------- APA ----------
Astoreca, A.L., Dalcero, A.M., Pinto, V.F. & Vaamonde, G. (2011) . A survey on distribution and toxigenicity of Aspergillus section Flavi in poultry feeds. International Journal of Food Microbiology, 146(1), 38-43.
http://dx.doi.org/10.1016/j.ijfoodmicro.2011.01.034
---------- CHICAGO ----------
Astoreca, A.L., Dalcero, A.M., Pinto, V.F., Vaamonde, G. "A survey on distribution and toxigenicity of Aspergillus section Flavi in poultry feeds" . International Journal of Food Microbiology 146, no. 1 (2011) : 38-43.
http://dx.doi.org/10.1016/j.ijfoodmicro.2011.01.034
---------- MLA ----------
Astoreca, A.L., Dalcero, A.M., Pinto, V.F., Vaamonde, G. "A survey on distribution and toxigenicity of Aspergillus section Flavi in poultry feeds" . International Journal of Food Microbiology, vol. 146, no. 1, 2011, pp. 38-43.
http://dx.doi.org/10.1016/j.ijfoodmicro.2011.01.034
---------- VANCOUVER ----------
Astoreca, A.L., Dalcero, A.M., Pinto, V.F., Vaamonde, G. A survey on distribution and toxigenicity of Aspergillus section Flavi in poultry feeds. Int. J. Food Microbiol. 2011;146(1):38-43.
http://dx.doi.org/10.1016/j.ijfoodmicro.2011.01.034