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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1999
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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 |
_version_ |
1768542455905386496 |