Evaluation of a polymer coating containing triclosan as the antimicrobial layer for packaging materials

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Abstract
Summary A coating made of a styrene‐acrylate copolymer and containing triclosan (87 ± 9 mg triclosan cm−3 coating) was evaluated as an antimicrobial layer for packaging materials. In both agar diffusion tests and liquid culture tests, inhibition of growth of Enterococcus faecalis by the triclosan‐coating was observed. Triclosan in the coating was not released into the water. Using a solution of 10% aqueous ethanol to simulate aqueous/acidic foods, a very small portion of the triclosan was quickly released with an estimated apparent partition coefficient of 1.7 × 10−5. When using n‐heptane, to simulate fatty foods, most of the triclosan was extracted with an estimated apparent partition coefficient of 5.5 × 10−2.