Potential Poultry And Meat Products
Contamination By Aflatoxin B1 Due To Fungal
Presence In Portuguese Poultry Units
Author(s)
S. Viegas, J. Malta-Vacas, R. Sabino,
C. Veríssimo &C. Viegas
Abstract
The impact of mycotoxins on human and animal health is well recognized.
Aflatoxin B1 (AFB1) is by far the most prevalent and the most potent natural
carcinogen and is usually the major aflatoxin produced by toxigenic fungal
strains. Data available, points to an increasing frequency of poultry feed
contamination by aflatoxins. Since aflatoxin residues may accumulate in body
tissues, this represents a high risk to human health. Samples from commercial
poultry birds have already presented detectable levels of aflatoxin in liver.
A descriptive study was developed in order to assess fungal contamination by
species from Aspergillus flavus complex in seven Portuguese poultry units. Air
fungal contamination was studied by conventional and molecular methods.
Air, litter and surfaces samples were collected. To apply molecular methods, air
samples of 300L were collected using the Coriolis μ air sampler (Bertin
Technologies), at 300 L/min airflow rate. For conventional methodologies, all
the collected samples were incubated at 27ºC for five to seven days. Through
conventional methods, Aspergillus flavus was the third fungal species (7%) most
frequently found in 27 indoor air samples analysed and the most commonly
isolated species (75%) in air samples containing only the Aspergillus genus.
Keywords
poultry, aflatoxins, aflatoxin B1, meat contamination
Related Book
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