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KMID : 1024520170260010011
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Journal of the Environmental Sciences
2017 Volume.26 No. 1 p.11 ~ p.21
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Detection of Escherichia coli Using Flow Cytometry
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Kim Ji-Hye
Park Sang-Won
Cho Young-Sik
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Abstract
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In this study, bacterial growth was assessed by flow cytometry analysis of fluorescent probes-stained bacteria. Flow cytometry has many advantages of rapid analytical time, a low standard deviation, and highly sensitive detection of live and Dead E.coli over colony forming assay. When untreated bacteria were stained by using Thiazole Orange (TO) and Propidium Iodide (PI), double staining had a short analytical time as compared with that of single staining while its error rate was similar to that of single staining. Through double staining experiments, it was determined that optimal concentrations for TO and PI staining were 420 nM and 9.6 μM, respectively.
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KEYWORD
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Flow cytometry, Escherichia coli, Thiazole orange, Propidium iodide
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