KMITL
Permanent URI for this communityhttps://dspace.kmitl.ac.th/handle/kmitl/1
Browse
1 results
Search Results
- Some of the metrics are blocked by yourconsent settings
Item type:Publication, Effective microbial disinfection in food industry with hydroxyl radical fumigation(2020-01-01); Kongtrub, J.Hydrogen peroxide (H<inf>2</inf>O<inf>2</inf>) fumigation has recently been explored and tested to be a good fumigant replacement of formaldehyde. This technique has been proven safer, less irritating and requires shorter exposure times. Surface disinfection has long been implemented with toxic formaldehyde or 35% hydrogen peroxide (H<inf>2</inf>O<inf>2</inf>). The results showed that they could be replaced with a safer and stronger oxidizing agent, activated H<inf>2</inf>O<inf>2</inf> in a vaporized form. Aerosolization by aerosol generators has been used to produce aerosols containing hydroxyl radicals of hydrogen peroxide. The dispersal of this highly oxidizing mist of micron-size droplets destroyed Escherichia coli and Aspergillus niger colonies that have been artificially spiked on surfaces. The experiments demonstrated efficient disinfection by integrating 1 to 5% H<inf>2</inf>O<inf>2</inf> fumigation with ozone (O<inf>3</inf>) and ultraviolet light (UV-C). Studies with E. coli and A. niger showed some disinfection with either O<inf>3</inf> or UV-C. Combining H<inf>2</inf>O<inf>2</inf> fumigation with both O<inf>3</inf> and UV-C exposure considerably accelerated the microbial inactivation. This approach allowed fast disinfection with 1 to 5% H<inf>2</inf>O<inf>2</inf> while offering cheaper and safer disinfection for healthcare settings.4