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Abstract:

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.

Registro:

Documento: Artículo
Título:Amaranth grain as substrate for aflatoxin and zearalenone production at different water activity levels
Autor:Bresler, G.; Vaamonde, G.; Degrossi, C.; Fernandez Pinto, V.
Filiación:Lab. de Microbiol. de Alimentos, Depto. Quim. Organ., Area B., (1428) Buenos Aires, Argentina
Palabras clave: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
Año:1998
Volumen:42
Número:1-2
Página de inicio:57
Página de fin:61
DOI: http://dx.doi.org/10.1016/S0168-1605(98)00063-4
Título revista:International Journal of Food Microbiology
Título revista abreviado:Int. J. Food Microbiol.
ISSN:01681605
CODEN:IJFMD
CAS:Aflatoxins; Water, 7732-18-5; Zearalenone, 17924-92-4
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01681605_v42_n1-2_p57_Bresler

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Citas:

---------- APA ----------
Bresler, G., Vaamonde, G., Degrossi, C. & Fernandez Pinto, V. (1998) . Amaranth grain as substrate for aflatoxin and zearalenone production at different water activity levels. International Journal of Food Microbiology, 42(1-2), 57-61.
http://dx.doi.org/10.1016/S0168-1605(98)00063-4
---------- CHICAGO ----------
Bresler, G., Vaamonde, G., Degrossi, C., Fernandez Pinto, V. "Amaranth grain as substrate for aflatoxin and zearalenone production at different water activity levels" . International Journal of Food Microbiology 42, no. 1-2 (1998) : 57-61.
http://dx.doi.org/10.1016/S0168-1605(98)00063-4
---------- MLA ----------
Bresler, G., Vaamonde, G., Degrossi, C., Fernandez Pinto, V. "Amaranth grain as substrate for aflatoxin and zearalenone production at different water activity levels" . International Journal of Food Microbiology, vol. 42, no. 1-2, 1998, pp. 57-61.
http://dx.doi.org/10.1016/S0168-1605(98)00063-4
---------- VANCOUVER ----------
Bresler, G., Vaamonde, G., Degrossi, C., Fernandez Pinto, V. Amaranth grain as substrate for aflatoxin and zearalenone production at different water activity levels. Int. J. Food Microbiol. 1998;42(1-2):57-61.
http://dx.doi.org/10.1016/S0168-1605(98)00063-4