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Polychlorodibenzodioxin and -furan (PCDD and PCDF) and dioxin-like polychlorobiphenyl (DL-PCB) congener levels in milk of grazing sheep as indicators of the environmental quality of rural areas

Brambilla, Gianfranco and Abate, Vittorio and De Filippis, Stefania Paola and Fulgenzi, Anna Rita and Iamiceli, Anna Laura and Mazzette, Alessandro and Miniero, Roberto and Pulina, Giuseppe (2011) Polychlorodibenzodioxin and -furan (PCDD and PCDF) and dioxin-like polychlorobiphenyl (DL-PCB) congener levels in milk of grazing sheep as indicators of the environmental quality of rural areas. Journal of Agricultural and Food Chemistry, Vol. 59 (15), p. 8513-8517. eISSN 1520-5118. Article.

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DOI: 10.1021/jf2010673

Abstract

An observational study was set up to evaluate how the quality of the environment may influence the levels of of PCDDs, PCDFs, and DL-PCBs in sheep's milk. Seven farms under natural and anthropogenic pressures were considered, along with an inventory of the surrounding regular and natural sources of emissions. Analysis by HRGC-HRMS revealed the highest cumulative levels (2.1 pg of WHO1998-TE/g fat) in one organic and one conventional farm, each close to a relevant bushfire. Their pattern was characterized by a noticeable contribution (24%) from mono-ortho-PCB congeners to the cumulative WHO-TE. For the other farms, close to potential anthropogenic sources, the levels recorded in milk ranged from 0.7 to 1.3 pg of WHO-TE/g fat. The health and reproductive indicators were in all herds within the physiological range. Results suggest the environmental quality in extensive farming system should be eligible as a food safety factor, also for organic productions.

Item Type:Article
ID Code:6410
Status:Published
Refereed:Yes
Uncontrolled Keywords:Dioxin-like substances, sheep, milk, environment, organic farming
Subjects:Area 07 - Scienze agrarie e veterinarie > AGR/19 Zootecnica speciale
Divisions:001 Università di Sassari > 01 Dipartimenti > Scienze zootecniche
Publisher:American Chemical Society
eISSN:1520-5118
Copyright Holders:© 2011 American Chemical Society
Deposited On:26 Aug 2011 09:57

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