Chlorine dioxide generation systems are generally more expensive than hypochlorite. Ultraviolet light systems are available for water sterilization as well as for use on produce surfaces. Ultraviolet light leaves no chemical residues and is not affected by water chemistry. However, it is only surface active and so requires clear water to be effective. Ozone is approved for use as a water sterilant but not for use directly on product.
Ozone is a very good sterilant but is subject to environmental and worker exposure regulations.
Activities and environmental sensitivities of wash water sanitizers. Oxidizer UV light Not affected Somewhat sensitive Disrupts DNA Facility Sanitation. Cleanliness of all work surfaces and equipment is an important quality assurance and product shelf life issue. However, the chief environmental safety issue is probably the possible presence of the bacterium Listeria monocytogenes within the processing facility. Listeria is a common environmental contaminant that thrives in cold, wet environments such as those encountered in fresh-cut processing facilities.