The effect of high-dose-rate X-rays on E. coli 0157:H7 in ground beef

Author

Curry, Randy D. ; Unkiesbay, K. ; Unklesbay, Nan ; Clevenger, Thomas E. ; Brazos, Blaise J. ; Mesyats, Gennady ; Filatov, Alexander

Author_Institution

Dept. of Electr. Eng., Missouri Univ., Columbia, MO, USA

Volume

28

Issue

1

fYear

2000

fDate

2/1/2000 12:00:00 AM

Firstpage

122

Lastpage

127

Abstract

The emergence of pathogens in today´s world has increased the need for new, portable, nonthermal sterilization technologies. The University of Missouri, Columbia in cooperation with the Institute of Electrophysics, Ekaterinburg, Russia, have built and tested a new accelerator based on solid-state opening switches for the disinfection of pathogens in food. The accelerator utilizes a new solid-state opening switch to generate 40 ns, 2OO-keV electron beam pulses. These pulses were then converted to Bremsstrahlung X-rays using an integral X-ray converter. The efficacy of treating E. coli 0157:H7. In ground beef was tested by irradiating frozen ground beef with the high-dose-rate 10^7-6 rads/s X-ray pulses. Comparison studies were also done with a Cobalt-60 source located at the Missouri University Research Reactor. The results of the study are presented in this paper

Keywords

biological effects of X-rays; bremsstrahlung; microorganisms; plasma materials processing; plasma switches; γ-rays; 200 keV; 40 ns; Cobalt-60 source; E. coli 0157:H7; Institute of Electrophysics; University of Missouri; accelerator; bremsstrahlung X-rays; disinfection; electron beam pulses; food; frozen ground beef; high-dose-rate X-ray pulses; high-dose-rate X-rays; integral X-ray converter; minced beef; modulator; nonthermal sterilization; pathogens; rep rate; solid-state opening switches; Electron accelerators; Electron beams; Food technology; Life estimation; Pathogens; Pulse generation; Solid state circuits; Switches; Testing; X-rays;

fLanguage

English

Journal_Title

Plasma Science, IEEE Transactions on

Publisher

ieee

ISSN

0093-3813

Type

jour

DOI

10.1109/27.842880

Filename

842880