Can uvc rays penetrate a petri dish

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Use the link below to share a full-text version of this article with your friends and colleagues. Learn more. Several enumeration methods to quantify the effect of ILP were investigated and showed relevant differences, shading effect and photoreactivation accounted for them, the strike method yielded the most reliable results. Higher decontamination efficiencies were obtained for Petri dishes located close to the strobe and inside the illumination cone. After 13 successive treatments, no resistance to ILP could be demonstrated. Media warming up depended on the distance from the strobe and the number of flashes.
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UV-C Radiation as a Factor Reducing Microbiological Contamination of Fish Meal

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UV-C Radiation as a Factor Reducing Microbiological Contamination of Fish Meal

Rydygier, 9 M. Fish meals, added to feeds as a source of protein, may contain pathogenic bacteria. Therefore, effective methods for their sanitizing, such as UV-C radiation, are needed to minimize the epidemiological risk. The objective of this study was to evaluate the effect of UV-C radiation on the sanitary state of fish meals. The research materials included salmon and cod meals. Samples of the fish meals were inoculated with suspensions of Salmonella , E.
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CHAPTER - 2 Teacher tip - 1

All the nutrient agar cultures were incubated for the growth of microorganisms exposed for different periods of time. The degree of growth in tabular form was recorded. The killing efficiency of UV rays to the time of exposure of the various microbes and the effect of UV rays when they pass through glass was tested. Unlike higher animals, bacteria do not have a nucleus bacteria DNA is free floating.
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