Ozone is used: i). Process water sterilization and drinking water sterilization, ii). Fruit and
vegetable washing: One way to maintain or even improve the safety of fresh produce is to
wash produces using ozonated water. Two types of washing systems, spray and flume, can
be used to reduce microbial counts on the surface of produce. iii). Fruit and vegetable
storage: Ozone can be employed in cold storage of produce to guard against mild and
bacteria at a very low concentration. It cannot only destroy mild and bacteria in the air and
on the surface of produce but also deodorize. iv). Process water recycling. Ozone is also
used for treatment of water for recycling, since it is a powerful oxidizing agent that has
been used to disinfect, to remove colori door, and turbidity, and to reduce the organic
loads of wastewater.
Hydrogen peroxide
Chlorine is widely used to sanitize fresh-cut fruits and vegetables. However, its
effectiveness is limited with some products, e.g., suppressing growth of Listeria
monocytogenes in shredded lettuce or completely eliminating Salmonella montevideo from
inoculated tomatoes. Furthermore, some food constituents may react with chlorine to form
potentially toxic reaction products. Therefore, there are some alternatives to use of
chlorine such as hydrogen peroxide, ozone, trisodiumphosphate.