Amaranth grain as substrate for aflatoxin and zearalenone production at different water activity levels
The influence of water activity (a(w)) on the kinetics of aflatoxin and zearalenone production in amaranth grains at 25°C was studied. Minimum a(w) for aflatoxin production in this substrate was 0.825. Accumulation of the four aflatoxins (B1, B2, G1 and G2) was similar at a(w) 0.825 (maximum 81.2 μg...
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1998
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| Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01681605_v42_n1-2_p57_Bresler http://hdl.handle.net/20.500.12110/paper_01681605_v42_n1-2_p57_Bresler |
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paper:paper_01681605_v42_n1-2_p57_Bresler2023-06-08T15:17:25Z Amaranth grain as substrate for aflatoxin and zearalenone production at different water activity levels Aflatoxins Amaranth Water activity Zearalenone aflatoxin aflatoxin b1 aflatoxin b2 aflatoxin g1 aflatoxin g2 amaranth water zearalenone article cereal controlled study grain kinetics legume nonhuman temperature Aflatoxins Angiosperms Aspergillus Fusarium Time Factors Water Zearalenone Amaranthus caudatus The influence of water activity (a(w)) on the kinetics of aflatoxin and zearalenone production in amaranth grains at 25°C was studied. Minimum a(w) for aflatoxin production in this substrate was 0.825. Accumulation of the four aflatoxins (B1, B2, G1 and G2) was similar at a(w) 0.825 (maximum 81.2 μg/kg after 42 days) and 0.868 (maximum 109.6 μg/kg after 49 days). Maximum accumulation of total aflatoxins at a(w) 0.902 (260.4 μg/kg) was detected after 21 days, with an appreciable increment in the concentration of aflatoxins B1 and G1. These quantities were lower than those reported for aflatoxin production on other cereals and legumes, indicating that amaranth is not a good substrate for aflatoxin production. Zearalenone was not detected at a(w) 0.902. Maximum accumulation of zearalenone was 1.5 μg/g after 35 days at a(w) 0.925 and 11.1 μg/g after 49 days at a(w) 0.950. 1998 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01681605_v42_n1-2_p57_Bresler http://hdl.handle.net/20.500.12110/paper_01681605_v42_n1-2_p57_Bresler |
| 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 Amaranth Water activity Zearalenone aflatoxin aflatoxin b1 aflatoxin b2 aflatoxin g1 aflatoxin g2 amaranth water zearalenone article cereal controlled study grain kinetics legume nonhuman temperature Aflatoxins Angiosperms Aspergillus Fusarium Time Factors Water Zearalenone Amaranthus caudatus |
| spellingShingle |
Aflatoxins Amaranth Water activity Zearalenone aflatoxin aflatoxin b1 aflatoxin b2 aflatoxin g1 aflatoxin g2 amaranth water zearalenone article cereal controlled study grain kinetics legume nonhuman temperature Aflatoxins Angiosperms Aspergillus Fusarium Time Factors Water Zearalenone Amaranthus caudatus Amaranth grain as substrate for aflatoxin and zearalenone production at different water activity levels |
| topic_facet |
Aflatoxins Amaranth Water activity Zearalenone aflatoxin aflatoxin b1 aflatoxin b2 aflatoxin g1 aflatoxin g2 amaranth water zearalenone article cereal controlled study grain kinetics legume nonhuman temperature Aflatoxins Angiosperms Aspergillus Fusarium Time Factors Water Zearalenone Amaranthus caudatus |
| description |
The influence of water activity (a(w)) on the kinetics of aflatoxin and zearalenone production in amaranth grains at 25°C was studied. Minimum a(w) for aflatoxin production in this substrate was 0.825. Accumulation of the four aflatoxins (B1, B2, G1 and G2) was similar at a(w) 0.825 (maximum 81.2 μg/kg after 42 days) and 0.868 (maximum 109.6 μg/kg after 49 days). Maximum accumulation of total aflatoxins at a(w) 0.902 (260.4 μg/kg) was detected after 21 days, with an appreciable increment in the concentration of aflatoxins B1 and G1. These quantities were lower than those reported for aflatoxin production on other cereals and legumes, indicating that amaranth is not a good substrate for aflatoxin production. Zearalenone was not detected at a(w) 0.902. Maximum accumulation of zearalenone was 1.5 μg/g after 35 days at a(w) 0.925 and 11.1 μg/g after 49 days at a(w) 0.950. |
| title |
Amaranth grain as substrate for aflatoxin and zearalenone production at different water activity levels |
| title_short |
Amaranth grain as substrate for aflatoxin and zearalenone production at different water activity levels |
| title_full |
Amaranth grain as substrate for aflatoxin and zearalenone production at different water activity levels |
| title_fullStr |
Amaranth grain as substrate for aflatoxin and zearalenone production at different water activity levels |
| title_full_unstemmed |
Amaranth grain as substrate for aflatoxin and zearalenone production at different water activity levels |
| title_sort |
amaranth grain as substrate for aflatoxin and zearalenone production at different water activity levels |
| publishDate |
1998 |
| url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01681605_v42_n1-2_p57_Bresler http://hdl.handle.net/20.500.12110/paper_01681605_v42_n1-2_p57_Bresler |
| _version_ |
1768544498416091136 |