Effects of curing sodium nitrite additive and natural meat fat on growth control of Listeria monocytogenes by the bacteriocin-producing Lactobacillus curvatus strain CWBI-B28

Antibacterial activity of bacteriocin-like substance P34 on Listeria monocytogenes in chicken sausage

“…Studies on the use of bacteriocins in milk have shown reduced efficiency with increasing fat content (Zapico et al , 1999; Bizani et al , 2008). Also the interaction of bacteriocins with components of the food matrix influence in the antimicrobial activity (Kouakou et al , 2009). Bacteriocins are compounds that often present a high content of hydrophobic amino acids.…”

“…Also, several bacteriocinogenic lactic acid bacteria have been used as protective cultures for food manufacturing processes in attempts to control this bacterium (De Martinis et al , 2002; Mataragas et al , 2003; Kouakou et al , 2009). Currently, nisin is the only bacteriocin widely used as a food preservative, but its successful application in meat system has been limited due the interaction with phospholipids, low solubility and inactivation by meat endogenous enzymes (Cleveland et al , 2001).…”

Biopreservative Efficacy of Bacteriocin BacFL31 in Raw Ground Turkey Meat in terms of Microbiological, Physicochemical, and Sensory Qualities

“…The plates were incubated overnight at 37 , and bacteriocin activity was determined as the reciprocal of the highest dilution showing a definite zone of inhibition around the well. The bacteriocin activity in the concentrated extract was expressed in arbitrary units per milliliter AU/mL according to Kouakou et al, 2009 calculated by multiplying the reciprocal of the critical dilution by 1000/v v = 50 corresponding to the volume in µl seeded in the well . In our case, the bacteriocin activity in the concentrated extract was 300 AU/ mL.…”

Antibacterial potential of Enterococcus faecium strains isolated from ewes’ milk and cheese

“…BLIS production was determined from 3 h of storage by the critical dilution method and the AWDA previously described. Arbitrary units (AU) per ml were calculated as AU ¼ (1000/v)/d; being v: volume seeded in the well and d: dilution (Kouakou et al, 2009). …”