3. FOOD ChEMISTRy & bIOTEChNOLOGy 3.1. Lectures

Chem. Listy, 102, s265–s1311 (2008) Food Chemistry & Biotechnology
Table III
Concentration of DBP, DEHP and ΣDBP+DEHP in oils
Sample
DBP DEHP ΣDBP + DEHP
[mg kg –1 ] [mg kg –1 ] [mg kg –1 ]
Oil A 1.11 5.71 6.82
Oil C 2.13 37.38 39.51
Conclusions
Samples of feedstuffs for livestock (complementary
feeds, premixes, feed additives and raw materials) were collected
in years 2005 and 2006, oils in 2007. Various levels
of contamination were determinated in feedstuffs. Feed additives,
premixes and complementary feeds as well are poor
in phthalates. Raw materials have higher amounts of PAEs,
but the highest concentrations were measured in materials
with high fat content. Because of phthalate´s lipophilic
nature, they are released mainly into feedstuffs containing
fat 15 . Phthalic acid esters determinated in this investigation
are similar to RASZYK et al. (1998) 16 , where was DBP level
in feed additives 0.207 mg kg –1 and DEHP 0.216 mg kg –1 .
Oils before technological production processing (in plastic
barrels) contained lower levels of PAEs than after processing,
so this study confirmed, that PAEs can easily migrate from
platics to fat.
This study was carried out within the scope of project
NAZV 234/2202/MZ260041, supported by the Department of
Agriculture, Res. & Dev., Czech Republic.
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