Ftaláty v kravském mléce

This study investigates the occurrence of di-butyl phthalate (DBP) and di-ethylhexyl phthalate (DEHP) in raw cow's milk. The idea was to compare level of contamination in manually and mechanically obtained milk. Samples were collected at a farm in the Vysočina region in January and April 2013. The concentrations of DBP and DEHP were determined by high performance liquid chromatography. Throughout the experiment a statistically significantly higher content of DBP than DEHP was observed. The concentration of DBP ranged from 0,57 to 16,79 mg.kg-1 of milk, DEHP ranged from undetectable values to 0,39 mg.kg-1 of milk. The amount of phthalates in the mechanically obtained milk was approximately two times higher than in the milk milked by hand, probably due to migration from the contact materials of the milking equipment. In April a slight decrease in the concentration values was observed, but the values did not differ statistically significantly from the values measured in January. The presence of phthalates in milk on the primary production level is a shining example of their wide application, which burdens the environment and the food chain