期刊
FOOD CHEMISTRY
卷 135, 期 3, 页码 2043-2051出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.foodchem.2012.06.069
关键词
Food safety; Polycyclic Aromatic Hydrocarbons (PAHs); Feed ingredients; Animal feed; Toxicity of PAHs
资金
- Ministerio de Ciencia e Innovacion
The primary aim of the proposed work is to propose the potential sources of pollution by polycyclic aromatic hydrocarbons (PAHs) in feeds and ingredients. To reach this propose the development of a simple, fast, quantitative and economic method for determining PAHs using liquid-liquid extraction (LLE), clean-up and detection by liquid chromatography with fluorescence detection (LC-FD) in polluting feeds and ingredients was developed. The overall method quantification limits range from 0.020 to 4.0 mu g/kg and analyte recoveries are between 70% and 105% with relative standard deviations (RSD) lower than 20%. Molecular patterns of PAHs were used to study their distribution in the selected samples by cluster analysis, separating them in two groups: contaminated by atmospheric or pyrolytic sources. In order to find a relationship between the nutritional composition (protein, fibre, ash and fat content), and the hypothetical toxicity of selected feeds, a partial least squared (PLS) analysis was used, showing that fibre was a major contributor. Moreover, the complete data set of 27 feed samples and 25 feed ingredients x 13 PAN concentrations were analysed by PCA to find out what ingredients were controlling PAH pollution. (C) 2012 Elsevier Ltd. All rights reserved.
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