Albonetti Sabrina, Minardi Paola, Trombetti Fabiana, Savigni Fabiana, Mordenti Attilio Luigi, Baranzoni Gian Marco, Trivisano Carlo, Greco Fedele Pasquale, Badiani Anna
Laboratorio di Igiene e Tecnologia Alimentare, Nutrizione ed Alimenti, Dipartimento di Scienze Mediche Veterinarie, Via Tolara di Sopra 50, 40064 Ozzano Emilia (BO), Italy.
Laboratorio di Zootecnia, Nutrizione ed Alimenti, Dipartimento di Scienze Mediche Veterinarie, Via Tolara di Sopra 50, 40064 Ozzano Emilia (BO), Italy.
Meat Sci. 2017 Jan;123:88-96. doi: 10.1016/j.meatsci.2016.09.004. Epub 2016 Sep 16.
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 51days, 270 New Zealand rabbits received either a basal diet, or experimental diets enriched with 100 or 200mg/kg of vitamin E or EconomasE™. 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.
本研究的目的是调查日粮中补充维生素E或EconomasE™对冷藏储存期间兔胴体和汉堡上几种背景菌/病原菌生长的影响。在51天的时间里，270只新西兰兔分别接受基础日粮，或添加100或200mg/kg维生素E或EconomasE™的试验日粮。所研究的细菌包括沙门氏菌、单核细胞增生李斯特菌、假单胞菌、肠杆菌科、大肠杆菌、凝固酶阳性葡萄球菌，以及嗜温和好冷需氧菌。通过挑战试验评估单核细胞增生李斯特菌在受污染肉饼上的生长情况。在体外评估维生素E或EconomasE™对单核细胞增生李斯特菌或铜绿假单胞菌的潜在保护或抗菌作用。日粮对兔胴体上以及汉堡上生长的细菌浓度没有影响。维生素E（体内和体外）以及体内的EconomasE™具有保护性抗氧化作用，而体外的EconomasE™对单核细胞增生李斯特菌具有很强的抗菌活性，但对铜绿假单胞菌没有抗菌活性。
