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49 2010

Journal of Food and Nutrition Research
Súhrny čísla 1 / 2010

HANUŠOVÁ, K. – KLAUDISOVÁ, K. – MILATOVÁ, E. – ŠVIRÁKOVÁ, E. – DOBIÁŠ, J. – VOLDŘICH, M. – KOZA, V. – MAREK, M.
Release of nisin from polyvinyldichloride lacquer coated on a polyethylene film
Journal of Food and Nutrition Research, 49, 2010, č. 1, s. 21-29

Kristýna Hanušová, Department of Food Preservation and Meat Technology, Faculty of Food and Biochemical Technology, Institute of Chemical Technology, Technická 3, CZ – 166 28 Prague 6, Czech Republic. E-mail: kristyna.hanusova@vscht.cz

Súhrn: Polyethylene films coated with commercially available polyvinyldichloride (PVdC) lacquer with the addition of nisin preparation Nisaplin (5.0% to 33.4%, w/w), i.e. with nisin concentration from 16 500 IU•dm-2 to 110 200 IU•dm-2, were studied at 25 °C to determine the bacteriocin migration into physiological saline solution. The maximal level of released nisin from films was 5 000 IU•dm-2, which was less than 10% of the total theoretical amount of nisin added to the coating. Equilibrated nisin migration depended on coating thickness. A non-linear relation between the equilibrium nisin migration level and the coating thickness of the nisin preparation was found. A diffusion coefficient of 2.37 × 10-10 cm2•s +- 0.82 × 10-10 cm2•s-1 was determined on the basis of migration data.

Kľúčové slová: active food packaging; nisin; bacteriocin; diffusion; polymer film

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