Experimental aflatoxin production in commercial yoghurt

  • Jose L. Blanco
  • Lucas Domínguez
  • Esperanza Gómez-Lucía
  • Jose F. F. Garayzábal
  • Joaquin Goyache
  • Guillermo Suárez
Original Papers
Received:
Accepted:

Summary

The production of aflatoxins in commercial yoghurt inoculated withAspergillus parasiticus NRRL 2999 was studied, using different incubation conditions. In all of the experiments, the level of aflatoxins was higher at 28 °C than at 15 °C and higher in a “damaged” container than in an “intact” container (related to microaerophilic conditions). No fungal growth or aflatoxin production was seen at 10 °C. Both fungal growth and aflatoxin concentration vary throughout the incubation period instead of progressively increasing. The ratio of aflatoxin B and G (B: G) at 28 °C was almost 1:1, but generally more aflatoxin G was detected at 15 °C. The distribution in mycelium/substrate was approximately 1:1 at both 28 °C and 15 °C.

Keywords

Analytical Chemistry Incubation Period Aflatoxin Fungal Growth Incubation Condition 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Experimentelle Aflatoxinproduktion im Joghurt des Handels

Zusammenfassung

Die Produktion von Aflatoxin mitAspergillus parasiticus beimpften Joghurt des Handels wurde unter verschiedenen Bedingungen studiert. In allen Experimenten war die Aflatoxinmenge bei 28 °C höher als bei 15 °C und bei beschädigten Verpackungen höher als in intakten, entsprechend den mikroklimatischen Bedingungen. Kein Pilzwachstum und keine Aflatoxinproduktion war bei 10 °C zu beobachten. Sowohl das Pilzwachstum als auch die Aflatoxinkonzentration variieren in der Inkubationsperiode, anstatt progressiv zuzunehmen. Die Menge von Aflatoxin B und G (B: G) bei 28 °C war 1:1, aber generell mehr Aflatoxin G wurde bei 15 °C nachgewiesen. Die Verteilung im Mycel und Substrat war ungefähr 1:1, Sowohl bei 28 °C als auch bei 15 °C.

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Copyright information

© Springer-Verlag 1988

Authors and Affiliations

  • Jose L. Blanco
    • 1
  • Lucas Domínguez
    • 1
  • Esperanza Gómez-Lucía
    • 1
  • Jose F. F. Garayzábal
    • 1
  • Joaquin Goyache
    • 1
  • Guillermo Suárez
    • 1
  1. 1.Unidad Docente Microbiología e Inmunología, Departamento de Patologia Animal I, Sanidad Animal, Facultad de VeterinariaUniversídad ComplutenseMadridSpain

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