4 °C - the National Sea Grant Library

For samples stored at l0°C, no significant difference on microbial population
was observed (Fig. 1.5, 1.6 and 1.7). No significant difference on pH values was
found (Fig. 1.8).
Effect of Edible Film on Growth of L. monocvtogenes on Smoked Trout
Smoked trout wrapped with edible before vacuum skin packaging showed a
significant lower Listeria count throughout the entire storage period at 4°C (Fig. 2.2).
However, no significant difference was found when samples stored at 10°C (Fig. 2.4).
Similar results for psychrotrophic population at both temperatures were observed
(Fig. 2.1 and 2.3).
In summary, edible film incorporated with potassium sorbate had potential
antimicrobial effect on growth of psychrotrophic bacteria and L. monocytogenes.
However, the concentration of antimicrobial agent need to be study to further
eliminate the Listeria contamination.
REFERENCES
Huang, Y.W., Leung, C.K., Harrison, M.A, and Gates, K. W. 1993. Fate of Listeria
monocvtogenes and Aeromonas hydrophila on catfish fillets cooked in a
microwave oven. J. Food Sci. 58:519-521.
SAS. 1987. SAS/STATGuide for Personal Computers. Version 6 edition SAS
Institute, Gary, NC.
Speck, M.L. (ed) 1984. Comoendium of the Methods for the Microbiological
Examination of Foods, 2nd ed. American Public Health Association,
Washington, DC.