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The Early Detection of the Gram Positive Bacteria using Sonification and Fluorescent Dye in the Field  

Ha, Yeon-Chul (GSDC-2-1, Agency for Defense Development)
Choi, Ki-Bong (GSDC-2-1, Agency for Defense Development)
Choi, Jung-Do (Department of Biochemistry, Chungbuk National University)
Publication Information
KSBB Journal / v.21, no.5, 2006 , pp. 347-352 More about this Journal
Abstract
This study was carried out to establish the optimum condition for cell disruption with a sonificator in the detection of the gram positive bacteria, Bacillus globigii and Streptococcus epidermidis for the purpose of developing automatic fluorometer. The efficiency of sonificator on the Bacillus globigii and Streptococcus epidermidis disruption differed greatly according to the diameter of sonificator probe tip. The larger sonificator probe diameter showed greater disruption. Bacillus globigii was more disruptive than Streptococcus epidermidis. Sonificator probe of the 13 mm diameter was the most efficient one when sample was sonificated for 20 seconds. The detection limits of Bacillus globigii and Streptococcus epidermidis were $10^5CFU/m{\ell}\;and\;5{\times}10^5CFU/m{\ell}$ respectively when samples were sonificated for 20 seconds with a sonificator probe of 13 mm diameter.
Keywords
Sonification; disruption; fluorometer; detection;
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