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1.
Rev Argent Microbiol ; 46(1): 41-4, 2014.
Artigo em Espanhol | MEDLINE | ID: mdl-24721273

RESUMO

One of the most important diseases in cereal crops is Fusarium head blight, being Fusarium graminearum the main etiological agent. This fungus has the ability to produce a wide spectrum and quantity of toxins, especially deoxynivalenol (DON). During the last crop season (2012-2013) the climatic conditions favored Fusarium colonization. The objective of this work was to determine the presence of this fungus as well as the DON content in 50 wheat grain samples. Our results showed that 80% of the samples were contaminated with Fusarium graminearum. Twenty four percent (24%) of the samples contained ≥ 1µg/g DON, 26% ranged from 0,5 and 0,99µg/g, and the remaining 50% had values lower than 0,5µg/g. Correlation was found between the presence of Fusarium graminearum and DON. It is necessary to establish DON limit values in wheat grains for human consumption.


Assuntos
Microbiologia de Alimentos , Fusarium/isolamento & purificação , Triticum/microbiologia , Argentina , DNA Fúngico/análise , Microbiologia de Alimentos/normas , Fusarium/metabolismo , Humanos , Concentração Máxima Permitida , Doenças das Plantas/microbiologia , Sementes/química , Sementes/microbiologia , Especificidade da Espécie , Tricotecenos/análise , Triticum/química
2.
Rev. argent. microbiol ; Rev. argent. microbiol;46(1): 41-44, mar. 2014.
Artigo em Espanhol | LILACS | ID: biblio-1009717

RESUMO

La fusariosis es una de las enfermedades más importantes de los cereales, Fusarium graminearum es su principal agente etiológico. Este hongo posee la capacidad de producir distintos tipos y niveles de toxinas, en especial deoxinivalenol (DON). En la campaña 2012-2013 se dieron condiciones ambientales predisponentes para el desarrollo de esta enfermedad. El objetivo de este trabajo fue evaluar la presencia del hongo y el contenido de DON en 50 muestras de trigo. Los resultados demostraron la presencia de Fusarium graminearum en el 80 % de las muestras analizadas. El 24 % de las muestras presentó valores de DON ≥ 1µg/g, el 26 % varió entre 0,5 y 0,99µg/g, mientras que el 50 % restante mostró valores inferiores a 0,5µg/g. Se observó correlación entre la presencia de Fusarium graminearum y de DON. Es necesario establecer valores límites de DON en granos de trigo destinados al consumo humano


One of the most important diseases in cereal crops is Fusarium head blight, being Fusarium graminearum the main etiological agent. This fungus has the ability to produce a wide spectrum and quantity of toxins, especially deoxynivalenol (DON). During the last crop season (2012-2013) the climatic conditions favored Fusarium colonization. The objective of this work was to determine the presence of this fungus as well as the DON content in 50 wheat grain samples. Our results showed that 80% of the samples were contaminated with Fusarium graminearum. Twenty four percent (24%) of the samples contained ≥ 1µg/g DON, 26% ranged from 0,5 and 0,99µg/g, and the remaining 50% had values lower than 0,5µg/g. Correlation was found between the presence of Fusarium graminearum and DON. It is necessary to establish DON limit values in wheat grains for human consumption


Assuntos
Triticum/toxicidade , Fusarium/patogenicidade , Fusariose/epidemiologia , Fusarium/isolamento & purificação , Fusarium/crescimento & desenvolvimento , Micotoxinas/análise
3.
Rev. argent. microbiol ; 46(1): 41-4, 2014 Jan-Mar.
Artigo em Espanhol | BINACIS | ID: bin-133714

RESUMO

One of the most important diseases in cereal crops is Fusarium head blight, being Fusarium graminearum the main etiological agent. This fungus has the ability to produce a wide spectrum and quantity of toxins, especially deoxynivalenol (DON). During the last crop season (2012-2013) the climatic conditions favored Fusarium colonization. The objective of this work was to determine the presence of this fungus as well as the DON content in 50 wheat grain samples. Our results showed that 80


of the samples were contaminated with Fusarium graminearum. Twenty four percent (24


) of the samples contained  1Ag/g DON, 26


ranged from 0,5 and 0,99Ag/g, and the remaining 50


had values lower than 0,5Ag/g. Correlation was found between the presence of Fusarium graminearum and DON. It is necessary to establish DON limit values in wheat grains for human consumption.


Assuntos
Microbiologia de Alimentos , Fusarium/isolamento & purificação , Triticum/microbiologia , Argentina , DNA Fúngico/análise , Microbiologia de Alimentos/normas , Fusarium/metabolismo , Humanos , Concentração Máxima Permitida , Doenças das Plantas/microbiologia , Sementes/química , Sementes/microbiologia , Especificidade da Espécie , Tricotecenos/análise , Triticum/química
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