Effect of Lactobacillus sakei Lb706 on Behavior of Listeria monocytogenes in Vacuum-Packed Rainbow Trout Fillets

Authors : Şükriye ARAS HİSAR

Pages : 1039-1044

View : 11 | Download : 4

Publication Date : 0000-00-00

Article Type : Research Paper

Abstract :The effect of a bacteriocin-producing strain, Lactobacillus sakei Lb706, on the behavior of Listeria monocytogenes in rainbow trout fillets stored under vacuum at 4 ºC for 14 days and at 10 ºC for 5 days was investigated. At 4 ºC, growth of L. monocytogenes was significantly inhibited insert ignore into journalissuearticles values(P < 0.05); by L. sakei Lb706 during 10 days of storage while bacteriocin-negative Lb706-B did not affect the growth of L. monocytogenes during 14 days of storage. In the presence of the sakacin A-producing strain of L. sakei insert ignore into journalissuearticles values(Lb706);, the growth of L. monocytogenes was significantly inhibited insert ignore into journalissuearticles values(P < 0.05); in the first 3 days of storage at 10 ºC, after which its count increased to 107 CFU/g. The control group and the group containing L. sakei Lb706-B showed similar growth patterns of L. monocytogenes. Significant increases insert ignore into journalissuearticles values(P < 0.05); were observed in all groups in terms of psychrotrophic bacteria counts. No significant insert ignore into journalissuearticles values(P > 0.05); changes in pH values during storage at 4 ºC and 10 ºC were determined. Consequently, the results of the present study showed that L. sakei Lb706 can be used as a protective culture in freshwater reared rainbow trout, especially for preventing possible contaminations of Gram-positive food-borne pathogenic bacteria such as L. monocytogenes during filleting.
Keywords : Rainbow trout, vacuum packaging, Listeria monocytogenes, bacteriocin, Lactobacillus sakei Lb706