Effects of UV exposure

Abstract This report is a study of the effects of UV exposure on the growth of four strains of non-photosynthetic bacteria: Escherichia coli, Staphylococcus aureus, Bacillus megaturium and Psuedomonas aeruginosa. Using a UV Transilluminator, each strain was exposed to nine different time intervals of UV radiation at a frequency of 1x 10 Mhz. After 48 hours of incubation, the kill time was determined by the first interval that produced no visible growth of colonies. The kill time …showed first 75 words of 1307 total…

…showed last 75 words of 1307 total…paper for English 360. References Abshire R, Dunton H. 1981. Resistance of Selected Strains of Psuedomonas aeruginosa to Low-Intensity UV Radiation. Applied and Environmental Microbiology 31:1419-1423 McKillip J, Jaykus L, Drake M. 1998. Ribosomal RNA Stability in Heat-Killed and UV-Irradiated Enterotoxigenic Staphylococcus aureus and Escherichia coli 0157:H7. Applied and Environmental Microbiology 64: 4264-4268. Mody R, KrishnaMurthy S, Prafulla D. 1989. Influence of Far UltraViolet Radiation on the Permeability of the Outer Membrane of Escherichia coli. Canadian Journal of Biology 26. 156-162.