A survey on distribution and toxigenicity of Aspergillus section Flavi in poultry feeds
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 gen...
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todo:paper_01681605_v146_n1_p38_Astoreca2023-10-03T15:05:49Z A survey on distribution and toxigenicity of Aspergillus section Flavi in poultry feeds Astoreca, A.L. Dalcero, A.M. Pinto, V.F. Vaamonde, G. 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 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. Fil:Vaamonde, G. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_01681605_v146_n1_p38_Astoreca |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
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 |
| spellingShingle |
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 Astoreca, A.L. Dalcero, A.M. Pinto, V.F. Vaamonde, G. A survey on distribution and toxigenicity of Aspergillus section Flavi in poultry feeds |
| topic_facet |
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 |
| description |
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. |
| format |
JOUR |
| author |
Astoreca, A.L. Dalcero, A.M. Pinto, V.F. Vaamonde, G. |
| author_facet |
Astoreca, A.L. Dalcero, A.M. Pinto, V.F. Vaamonde, G. |
| author_sort |
Astoreca, A.L. |
| title |
A survey on distribution and toxigenicity of Aspergillus section Flavi in poultry feeds |
| title_short |
A survey on distribution and toxigenicity of Aspergillus section Flavi in poultry feeds |
| title_full |
A survey on distribution and toxigenicity of Aspergillus section Flavi in poultry feeds |
| title_fullStr |
A survey on distribution and toxigenicity of Aspergillus section Flavi in poultry feeds |
| title_full_unstemmed |
A survey on distribution and toxigenicity of Aspergillus section Flavi in poultry feeds |
| title_sort |
survey on distribution and toxigenicity of aspergillus section flavi in poultry feeds |
| url |
http://hdl.handle.net/20.500.12110/paper_01681605_v146_n1_p38_Astoreca |
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