Phthalates in milk products in different packaging materials

Researchers developed a method for extraction and determination of free and total phthalate esters in commercial whole milk products. The free phthalates in milk samples were extracted with ethyl acetate after general pretreatment procedures including protein precipitation, centrifugation, and filtration.
The developed methods were applied to extract and determine phthalates in commercial whole milk products with different packaging materials, including plastic, glass, and metal. All samples contained several phthalates. The amounts of phthalates in milk samples packaged in glass and metal containers were much lower than those in plastic containers (Journal of Dairy Science, 9 October 2015).
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