We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Contamination of commercial dry dog food by Aspergillus flavus and aflatoxins in Aguascalientes, Mexico.
- Authors
Martínez-Martínez, Lizbeth; Gerardo Valdivia-Flores, Arturo; Quezada-Tristán, Teódulo; Lilián Guerrero-Barrera, Alma; Janet Rangel-Muñoz, Erika; Arroyo Zúñiga, Karla Isela; Álvarez-Días, Fernanda; Lisandro Signorini-Porchietto, Marcelo
- Abstract
Commercial dry food (CDF) for dogs is a whole grain ration thoroughly mixed and die-cut with heat and pressure to give it the shape of kibble. CDF is formulated with several agroindustrial ingredients and by-products of agricultural and livestock origin. Contamination by Aspergillus flavus and aflatoxins (AFs) in foods has been shown to be a global problem that causes harm to human and animal health. The objective was to evaluate the presence of fungal microbiota and contamination by AFs in CDF. A random sample (n= 77) of marketed CDF was selected in Aguascalientes, Mexico. The samples were processed and cultured by serial dilutions, obtaining monosporic isolates, which were characterized morphologically, toxigenically (HPLC), and molecularly (PCR). The concentration of AFs in CDF was quantified by HPLC. Fungal growth was observed in 53.2 % of CDF, and 7.8 % exceeded the maximum permissible limit (MPL=106 CFU/g). The genera Aspergillus, Penicillium, Cladosporium, Mucor, Alternaria, and Fusarium were found (69.4, 12.9, 9.4, 4.7, 1.7, and 1.1 %, respectively). All CDF samples showed contamination by AFs (14.8 ± 0.3 μg/kg), and 11.8 % exceeded the MPL (20.0 μg/kg) suggested by the regulations; contamination was significantly associated (P<0.05) with some ingredients used, CDF moisture, and inclusion of fungicides and sequestrants. The results obtained suggest that the CDF manufacturing process does not wholly eliminate contamination by fungi or by the AFs present in the ingredients used for its formulation; consequently, these remain in the finished product, putting at risk the health of dogs and the efficacy of the food chain.
- Subjects
ASPERGILLUS flavus; AFLATOXINS; DOG food; FOOD chains; FOOD dehydration; AGRICULTURAL wastes; MANUFACTURING processes; ANIMAL health
- Publication
Revista Mexicana de Ciencias Pecuarias, 2023, Vol 14, Issue 4, p796
- ISSN
2007-1124
- Publication type
Article
- DOI
10.22319/rmcp.v14i4.6397