Inactivation of Bacteria in Freshwater by Momentary Decompression Following High Pressurization

Takashi Baba, Nobuyasu Yamaguchi, Katsuji Tani, Masao Nasu
2011 Microbes and Environments  
Rapid and continuous pressure treatment was realized using a hydraulic pump and the momentary decompression following high pressurization was used to inactivate bacteria. The number of colony-forming E. coli decreased to 1/1000 in response to 10 cycles of pressure treatment. In groundwater samples, repeated pressure treatment led to a two-log decrease in the number of colony-forming bacteria. These findings suggest that repeated cycles of momentary decompression following high pressurization
more » ... h pressurization enabled a marked decrease in bacterial growth activity. The results presented herein may contribute to microbiological quality control and the safety of freshwater.
doi:10.1264/jsme2.me10175 pmid:21487210 fatcat:cl2o5ou2qbh3fe2zdatuo5sczy