Scientific Literature
 

Bacteriophage cocktail significantly reduces or eliminates Listeria monocytogenes contamination on lettuce, apples, cheese, smoked salmon and frozen foods

Authors
Perera, M., Abuladze, T., Li M., Woolston, J., and Sulakvelidze, A.

Journal
Food Microbiology, 2015

http://dx.doi.org/10.1016/j.fm.2015.06.006

Abstract
ListShield™, a commercially available bacteriophage cocktail that specifically targets Listeria monocytogenes, was evaluated as a bio-control agent for L. monocytogenes in various Ready-To-Eat foods. ListShield™ treatment of experimentally contaminated lettuce, cheese, smoked salmon, and frozen entrees significantly reduced (p < 0.05) L. monocytogenes contamination by 91% (1.1 log), 82% (0.7 log), 90% (1.0 log), and 99% (2.2 log), respectively. ListShield™ application, alone or combined with an antioxidant/anti-browning solution, resulted in a statistically significant (p < 0.001) 93% (1.1 log) reduction of L. monocytogenes contamination on apple slices after 24 h at 4 C. Treatment of smoked salmon from a commercial processing facility with ListShield™ eliminated L. monocytogenes (no detectable L. monocytogenes) in both the naturally contaminated and experimentally contaminated salmon fillets. The organoleptic quality of foods was not affected by application of ListShield™, as no differences in the color, taste, or appearance were detectable. Bio-control of L. monocytogenes with lytic bacteriophage preparations such as ListShield™ can offer an environmentally-friendly, green approach for reducing the risk of listeriosis associated with the consumption of various foods that may be contaminated with L. monocytogenes.

Target
Listeria monocytogenes

Product
ListShield

Catalog Number
01LP

Food Group
Fresh Produce, Dairy, Fish and Ready-to-eat

Food Product
Lettuce, cheese, Salmon, frozen food served in-flight on airplanes

Key words
Listeria monocytogenes;Bacteriophage;Phage;bio-control;ListShield™;Food safety;Organoleptic testing

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