Guerranti Cristiana, Focardi Silvano Ettore
Department of Environmental Sciences "G. Sarfatti", University of Siena, Via Mattioli 4, 53100 Siena, Italy.
ISRN Toxicol. 2011 Jul 10;2011:541694. doi: 10.5402/2011/541694. Print 2011.
Conventional and omega-3 fatty acid-enriched milk and cheese were analyzed for persistent organic pollutants (POPs). Omega-3-enriched products are usually supplemented with fish oil which is potentially contaminated. All classes of the considered POPs (PCBs, DDT, HCB, PBDEs, and PCDD/Fs) were found in the samples, with average concentrations higher in omega-3-enriched products than in conventional ones. For PCBs, DDT, and HCB, differences were statistically significant and, therefore, cannot be ascribed to normal variability. With regard to all classes of compounds, the highest levels in individual samples were always found in omega-3 products, in line with the hypothesis that these foods are potentially more contaminated than conventional ones.
对传统牛奶和奶酪以及富含欧米伽-3脂肪酸的牛奶和奶酪进行了持久性有机污染物（POPs）分析。富含欧米伽-3的产品通常添加了可能受污染的鱼油。在所检测的样品中均发现了各类持久性有机污染物（多氯联苯、滴滴涕、六氯苯、多溴二苯醚和多氯二苯并二恶英/多氯二苯并呋喃），富含欧米伽-3的产品中这些污染物的平均浓度高于传统产品。对于多氯联苯、滴滴涕和六氯苯，差异具有统计学意义，因此不能归因于正常波动。关于所有化合物类别，单个样品中的最高含量总是出现在富含欧米伽-3的产品中，这与这些食品可能比传统食品受污染更严重的假设相符。
