Study On The Effect Of Ultra-Highpressure Water Jet On Microorganism's Bioactivity, Cell Structure And Physiological Characteristics

The research of affect of ultra-high pressure water jet on the microorganism's bioactivity, cell structure and physiological characteristics has been studied. The research has been done on this way: According to the growth situation after processing, the affect on the microorganism's bioactivity was researched; According to the damaging situation, the microorganism's life structure was researched; The physiological changes was researched through testing.1. The results showed that: At the same temperature, higher pressure, higher death rates there will be. The differences are very obvious. At the same pressure, higher temperature, there will be higher death rates, it meaned that the temperature is also an important element in sterilization which showed the fact that ultra-high pressure water jet is efficient in sterilization.2. Through observing with microscope, the cells' structure has deeply changed, the cells has been damaged into pieces and parts. Also, higher pressure, more cells will be damaged. According to the damage situation, this assumption can be made: The cell has been destroyed because of hitting or straching by the ultra-high pressure water jet.3. If there is a affect of ultra-high pressure water jet on the changes of cells' size and PH has also been studied. Besides the dead ones, cells' size didn't change after being processed, and in general, cells' PH declined after being processed by ultra-high pressure water jet.The essence of ultra-high pressure water jet in sterilization has been studied on this project. The research work has been improved which will be helpful and surpportive to the work in the future. Also, it provides the research of application of ultra-high pressure water jet on other areas with useful data accumulation.