Assessment of the Potential of a Native Non-Aflatoxigenic Aspergillus flavus Isolate to Reduce Aflatoxin Contamination in Dairy Feed

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AudienciaPúblico en generales_ES
CoberturaMéxicoes_ES
Fecha de ingreso2026-10-05T16:33:06Z
Fecha de publicación2022-01-01
ResumenAspergillus species can produce aflatoxins (AFs), which can severely affect human and animal health. The objective was to evaluate the efficacy of reducing AF contamination of a non-aflatoxigenic isolate of A. flavus experimentally coinoculated with different aflatoxigenic strains in whole plant (WP), corn silage (CS), immature grains (IG) and in culture media (CM). An L-morphotype of A. flavus (CS1) was obtained from CS in a dairy farm located in the Mexican Highland Plateau; The CS1 failed to amplify the AFs biosynthetic pathway regulatory gene (aflR). Monosporic CS1 isolates were coinoculated in WP, CS, IG and CM, together with A. flavus strains with known aflatoxigenic capacity (originating from Cuautitlan and Tamaulipas, Mexico), and native isolates from concentrate feed (CF1, CF2 and CF3) and CS (CS2, CS3). AF production was evaluated by HPLC and fungal growth rate was measured on culture media. The positive control strains and those isolated from CF produced a large average amount of AFs (15,622 +/- 3952 and 12,189 +/- 3311 mu g/kg), whereas A. flavus strains obtained from CS produced a lower AF concentration (126 +/- 25.9 mu g/kg). CS1 was efficient (p < 0.01) in decreasing AF concentrations when coinoculated together with CF, CS and aflatoxigenic positive control strains (71.6-88.7, 51.0-51.1 and 63.1-71.5\%) on WP, CS, IG and CM substrates (73.9-78.2, 65.1-73.7, 63.8-68.4 and 57.4-67.6\%). The results suggest that the non-aflatoxigenic isolate can be an effective tool to reduce AF contamination in feed and to minimize the presence of its metabolites in raw milk and dairy products intended for human nutrition.es_ES
Doihttps://doi.org/10.3390/toxins14070437es_ES
URIhttps://riuat.uat.edu.mx/handle/123456789/4929
Idiomaenes_ES
EditorialMDPIes_ES
RelaciónToxinses_ES
URL relacionadohttps://doi.org/10.3390/toxins14070437es_ES
DerechosAcceso abierto (Metadatos de producción científica)es_ES
Licenciahttp://purl.org/coar/access_right/c_abf2es_ES
FuenteToxins
Palabra clavemycotoxinses_ES
Palabra clavebiological controles_ES
Palabra claveaflatoxin biocontrol agentses_ES
Palabra claveMexicoes_ES
Palabra clavedairy cowses_ES
TítuloAssessment of the Potential of a Native Non-Aflatoxigenic Aspergillus flavus Isolate to Reduce Aflatoxin Contamination in Dairy Feedes_ES
TipoArtículoes_ES
ArbitradoHa sido Arbitradoes_ES
AutorJanet Rangel-Munoz, Erika
AutorGerardo Valdivia-Flores, Arturo
AutorHernandez-Delgado, Sanjuana
AutorCruz-Vazquez, Carlos
AutorCarolina de-Luna-Lopez, Maria
AutorQuezada-Tristan, Teodulo
AutorOrtiz-Martinez, Raul
AutorMayek-Perez, Netzahualcoyotl
AutorJanet Rangel-Munoz, Erikaes_ES
AutorGerardo Valdivia-Flores, Arturoes_ES
AutorHernandez-Delgado, Sanjuanaes_ES
AutorCruz-Vazquez, Carloses_ES
AutorCarolina de-Luna-Lopez, Mariaes_ES
AutorQuezada-Tristan, Teoduloes_ES
AutorOrtiz-Martinez, Raules_ES
AutorMayek-Perez, Netzahualcoyotles_ES
InstituciónUniversidad Autónoma de Tamaulipas
InstituciónUniversidad Autónoma de Tamaulipases_ES
Número7es_ES
URL relacionadahttps://doi.org/10.3390/toxins14070437
Tipo de artículoIndexado
Tipo de artículoIndexadoes_ES
Volumen14es_ES

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