Influence of water activity on deoxynivalenol accumulation in wheat

The influence of water activity (aw) on deoxynivalenol accumulation in wheat at 25°C was studied. Gnotobiotic grains were conditioned at different aw levels, inoculated with a toxigenic Fusarium graminearum strain, and incubated for ten weeks. The highest accumulation of deoxynivalenol (1130 μg/kg)...

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Detalles Bibliográficos
Autores principales: Comerio, Ricardo M., Vaamonde, Graciela
Publicado: 1999
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01787888_v15_n1_p24_Comerio
http://hdl.handle.net/20.500.12110/paper_01787888_v15_n1_p24_Comerio
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_01787888_v15_n1_p24_Comerio
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spelling paper:paper_01787888_v15_n1_p24_Comerio2023-06-08T15:19:20Z Influence of water activity on deoxynivalenol accumulation in wheat Comerio, Ricardo M. Vaamonde, Graciela The influence of water activity (aw) on deoxynivalenol accumulation in wheat at 25°C was studied. Gnotobiotic grains were conditioned at different aw levels, inoculated with a toxigenic Fusarium graminearum strain, and incubated for ten weeks. The highest accumulation of deoxynivalenol (1130 μg/kg) was detected at aw 0.980. At aw 0.945 and 0.925 the maximum quantities of toxin accumulated were 113 μg/kg and 93 μg/kg respectively. Deoxynivalenol was not detected in the substrate at aw 0.900. Results suggest that intermediate aw levels (0.97-0.92) are particularly critical at post harvest time because those are conditions under which deoxynivalenol production is most likely to be initiated naturally. Fil:Comerio, R.M. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Vaamonde, G. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 1999 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01787888_v15_n1_p24_Comerio http://hdl.handle.net/20.500.12110/paper_01787888_v15_n1_p24_Comerio
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
description The influence of water activity (aw) on deoxynivalenol accumulation in wheat at 25°C was studied. Gnotobiotic grains were conditioned at different aw levels, inoculated with a toxigenic Fusarium graminearum strain, and incubated for ten weeks. The highest accumulation of deoxynivalenol (1130 μg/kg) was detected at aw 0.980. At aw 0.945 and 0.925 the maximum quantities of toxin accumulated were 113 μg/kg and 93 μg/kg respectively. Deoxynivalenol was not detected in the substrate at aw 0.900. Results suggest that intermediate aw levels (0.97-0.92) are particularly critical at post harvest time because those are conditions under which deoxynivalenol production is most likely to be initiated naturally.
author Comerio, Ricardo M.
Vaamonde, Graciela
spellingShingle Comerio, Ricardo M.
Vaamonde, Graciela
Influence of water activity on deoxynivalenol accumulation in wheat
author_facet Comerio, Ricardo M.
Vaamonde, Graciela
author_sort Comerio, Ricardo M.
title Influence of water activity on deoxynivalenol accumulation in wheat
title_short Influence of water activity on deoxynivalenol accumulation in wheat
title_full Influence of water activity on deoxynivalenol accumulation in wheat
title_fullStr Influence of water activity on deoxynivalenol accumulation in wheat
title_full_unstemmed Influence of water activity on deoxynivalenol accumulation in wheat
title_sort influence of water activity on deoxynivalenol accumulation in wheat
publishDate 1999
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01787888_v15_n1_p24_Comerio
http://hdl.handle.net/20.500.12110/paper_01787888_v15_n1_p24_Comerio
work_keys_str_mv AT comerioricardom influenceofwateractivityondeoxynivalenolaccumulationinwheat
AT vaamondegraciela influenceofwateractivityondeoxynivalenolaccumulationinwheat
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