Combining pediocin with postpackaging irradiation for control of Listeria monocytogenes on frankfurters

Frankfurters, in 1-link, 5-link, or 10-link packages, were surface inoculated with a five-strain mixture of Listeria monocytogenes (3.40 or 5.20 log CFU/g) after treatment with 3,000 arbitrary units (AU) or 6,000 AU of pediocin (in ALTA 2341) per link. The frankfurters were vacuum packaged, after wh...

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Bibliographic Details
Published in:Journal of food protection 2004-09, Vol.67 (9), p.1866-1875
Main Authors: Chen, C.M, Sebranek, J.G, Dickson, J.S, Mendonca, A.F
Format: Article
Language:English
Subjects:
Animals
antibacterial proteins
bacterial contamination
bacteriocins
Bacteriocins - pharmacology
beef
Biological and medical sciences
Cattle
Colony Count, Microbial
color
Dose-Response Relationship, Drug
Dose-Response Relationship, Radiation
firmness
flavor
food contamination
Food industries
Food Irradiation
Food Microbiology
food packaging
food pathogens
Food Preservation - methods
food processing quality
food storage
Fundamental and applied biological sciences. Psychology
hot dogs
inoculum density
Listeria monocytogenes
Listeria monocytogenes - drug effects
Listeria monocytogenes - growth & development
Listeria monocytogenes - radiation effects
Meat and meat product industries
Meat Products - microbiology
off odors
pathogen survival
pork
sensory evaluation
storage temperature
storage time
synergism
synergistic effects
Taste
Temperature
texture
thiobarbituric acid-reactive substances
Time Factors
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Description
Summary:Frankfurters, in 1-link, 5-link, or 10-link packages, were surface inoculated with a five-strain mixture of Listeria monocytogenes (3.40 or 5.20 log CFU/g) after treatment with 3,000 arbitrary units (AU) or 6,000 AU of pediocin (in ALTA 2341) per link. The frankfurters were vacuum packaged, after which the 1-link and 5-link packages were irradiated at 1.2 or 2.3 kGy and the 10-link packages were irradiated at 1.4 or 3.5 kGy. L. monocytogenes was enumerated following the treatments. Selected treatments were subsequently evaluated during storage at 4, 10, and 25°C for up to 12 weeks. Combination of pediocin with postpackaging irradiation at 1.2 kGy or more was necessary to achieve a 50% reduction of L. monocytogenes on frankfurters in 1-link or 5-link packages. The combination of 6,000 AU of pediocin and irradiation at 2.3 kGy or more was effective in all package sizes for inhibition of the pathogen for 12 weeks at 4 or 10°C. There was a synergistic effect between pediocin and irradiation for inhibition of L. monocytogenes. Storage at 4°C enhanced the antilisterial effects of the treatment combinations, with little or no growth of the pathogen in 1-link or 5-link packages during 12 weeks of storage. In general, these treatments did not affect the sensory quality of frankfurters.
ISSN:0362-028X
1944-9097
DOI:10.4315/0362-028X-67.9.1866