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KMID : 1007520010100030327
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Food Science and Biotechnology
2001 Volume.10 No. 3 p.327 ~ p.330
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Migration of Preservative from Antimicrobial Polymer Coating into Water
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Park, Jong Moon
LEE, DONG SUN/Park, Hyun Jin/Choi, Jin Ok
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Abstract
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Migration of antimicrobial agent in coating binder matrix (acrylic polymer or vinyl acetate-ethylene copolymer) to water was investigated at 10℃. The studied antimicrobial agents included three artificial antimicrobial agents (sodium propionate, sodium sorbate, and sodium benzoate) and one biopreservative (nisin). Diffusion coefficient and equilibrated migration level were investigated as functions of antimicrobial agent and binder medium, and then correlated with antimicrobial activity of the coated paper board. Three artificial preservatives showed significantly higher level of equilibrated release (76-100%) compared to nisin having the level of 7-28%. The diffusion coefficients determined ranged from 2.52×10^(-12) to 1.75×10^(-11) ㎡/sec. The binder of vinyl acetate-ethylene copolymer gave a higher diffusion coefficient and thus resulted in a higher antimicrobial inhibition zone on the agar plate medium compared to acrylic polymer.
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