Mycobiota and Aflatoxin B1 in Feed for Farmed Sea Bass (Dicentrarchus labrax)

Toxins

Inês Filipa Martins Almeida²  Hermínia Marina Lourdes Martins¹  Sara Maria Oliveira Santos¹  Maria Suzana Freitas²  José Manuel Gaspar Nunes da Costa² 

[1] INRB, I.P., Laboratório Nacional de Investigação Veterinária, Serviço de Micologia, Estrada de Benfica 701, 1549-011 Lisboa, Portugal;Direcção Geral de Veterinária, Largo da Academia Nacional de Belas Artes, nº 2, 1249-105 Lisboa, Portugal;

关键词: aquaculture;    fungi;    fish feed;    safety control;   

DOI  :  10.3390/toxins3030163

来源: mdpi

【 摘 要 】

Thesafety characteristics of feed used in fish and crustacean aquaculture systems are an essential tool to assure the productivity of those animal exploitations. Safety of feed may be affected by different hazards, including biological and chemical groups. The aim of this preliminary study was to evaluate fungi contamination and the presence of aflatoxins in 87 samples of feed for sea bass, collected in Portugal. Molds were found in 35 samples (40.2%) in levels ranging from 1 to 3.3 log10 CFU∙g⁻¹. Six genera of molds were found. Aspergillus flavus was the most frequent, found in all positive samples, with a range from 2 to 3.2 log₁₀ CFU∙g⁻¹. Aspergillus niger was found in 34 samples (39.1%), ranging from 1 to 2.7 log₁₀ CFU∙g⁻¹. Aspergillus glaucus was found in 26 samples (29.9%) with levels between 1 and 2.4 log₁₀ CFU∙g⁻¹. Penicillium spp. and Cladosporium spp. were both found in 25 samples (28.7%). Fusarium spp. was found in 22 samples (25.3%), ranging from 1 to 2.3 log₁₀ CFU∙g⁻¹. All feed samples were screened for aflatoxins using a HPLC technique, with a detection limit of 1.0 μg∙kg⁻¹. All samples were aflatoxin negative.

【 授权许可】

CC BY   
© 2011 by the authors; licensee MDPI, Basel, Switzerland.