The term ‘‘bacteriocin’’ comprises a large and
diverse group of ribosomally synthesized antimicrobial
proteins or peptides some of which undergo posttranslational
modifications (Nes and Eijsink, 1999).
Although bacteriocins may be found in numerous
Gram-positive and Gram-negative bacteria, those produced
by lactic acid bacteria (LAB) have received
particular attention in recent years due to their potential
application in the food industry as natural preservatives.
This trend reflects the increasing consumer
awareness of the risks derived not only from foodborne
pathogens, but also from the artificial chemical
preservatives used to control them (Abee et al., 1995).
In contrast, the use of LAB and/or their metabolites
for food preservation is generally accepted by consumers
as something ‘‘natural’’ and ‘‘health-promoting’’
(Montville and Winkowski, 1997)