592697 Disclosed is a system for preparing packages of sliced food product which minimises bacterial contamination and outgrowth within the packaged food product. The system includes a powered slicer to sequentially separate slices of food product to create a stack of food product slices. The system also includes a first spray nozzle (34a) for depositing a first predetermined amount of the antimicrobial preparation onto the first face (36) of the food log (1) or other food product piece each time a slice is removed as well as a second spray nozzle (34c) for depositing a second predetermined amount of the antimicrobial preparation into a vacuum pouch prior (37) to reception of a stack (38) within the pouch.