The use of bacteriocins and other biologically derived antimicrobials in packaging material is attracting increasing interest recently, and patents have been filed in the area (Wilhoit 1996, 1997; Ming et al. 1997; Siragusa et al. 1999).A plastic active packaging for the storage of milk was never employed before, especially for raw milk, although a nisinactivated chitosan package was used for pasteurized milk storage by Lee et al