Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8503282 | Meat Science | 2017 | 9 Pages |
Abstract
The purpose of this study was to investigate the effect of dietary vitamin E or EconomasE⢠supplementation on the growth of several background/pathogenic bacteria on rabbit carcasses and hamburgers during refrigerated storage. For 51 days, 270 New Zealand rabbits received either a basal diet, or experimental diets enriched with 100 or 200 mg/kg of vitamin E or EconomasEâ¢. The bacteria studied were Salmonella, Listeria monocytogenes, Pseudomonas, Enterobacteriaceae, Escherichia coli, coagulase-positive staphylococci, plus both mesophilic and psychrotrophic aerobes. The growth of Listeria monocytogenes on contaminated patties was evaluated through a challenge test. The potential protective or antimicrobial effect of vitamin E or EconomasE⢠on Listeria monocytogenes or Pseudomonas aeruginosa was assessed in vitro. Diet did not influence the concentrations of bacteria found on rabbit carcasses and developing on hamburgers. Vitamin E (in vivo and in vitro) and EconomasE⢠in vivo had a protective antioxidant role, while EconomasE⢠in vitro had strong antibacterial activity against Listeria monocytogenes, but not against Pseudomonas aeruginosa.
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Authors
Sabrina Albonetti, Paola Minardi, Fabiana Trombetti, Fabiana Savigni, Attilio Luigi Mordenti, Gian Marco Baranzoni, Carlo Trivisano, Fedele Pasquale Greco, Anna Badiani,