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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Deng, Manchen Wang, Yu Jia, Li |
| Description | Country affiliation: China Author Affiliation: Deng M ( MOE Key Laboratory of Laser Life Science & Institute of Laser Life Science, College of Biophotonics, South China Normal University, Guangzhou 510631, China.); Wang Y ( MOE Key Laboratory of Laser Life Science & Institute of Laser Life Science, College of Biophotonics, South China Normal University, Guangzhou 510631, China.); Jia L ( MOE Key Laboratory of Laser Life Science & Institute of Laser Life Science, College of Biophotonics, South China Normal University, Guangzhou 510631, China. Electronic address: jiali@scnu.edu.cn.) |
| Abstract | Effective bacteria detection and quantification are essential prerequisite for the prevention and treatment of infectious diseases. Herein, we report a method for the detection and quantification of Escherichia coli (E. coli).N-Methylimidazolium modified magnetic particles (MIm-MPs) are synthesized successfully and used as an efficient magnetic material for the isolation and concentration of E. coli. The factors including pH of binding buffer, concentration of elution buffer and elution time which may affect the capture and elution efficiencies are optimized. The linear correlation between bacteria concentration and peak area of polymerase chain reaction (PCR) product analyzed by capillary electrophoresis (CE) is determined. Rapid preconcentration of trace amount of E. coli (10(1) cfu mL(-1)) in large volume of aqueous sample (500 mL) is achieved, and the capture efficiency can reach 99%. The quantification of bacteria in large volume of spiked tap water and mineral water samples is realized. The recoveries for different concentrations of E. coli in tap and mineral water samples are in the range between 83% and 93%. The results demonstrate that this MIm-MPs-PCR-CE method can be applied to detect and quantify bacteria in real samples. |
| File Format | HTM / HTML |
| ISSN | 00032670 |
| Volume Number | 827 |
| e-ISSN | 18734324 |
| Journal | Analytica Chimica Acta |
| Language | English |
| Publisher | Elsevier |
| Publisher Date | 2014-05-27 |
| Publisher Place | Netherlands |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Discipline Analytical Discipline Chemistry Electrophoresis, Capillary Methods Escherichia Coli Isolation & Purification Ferrosoferric Oxide Chemistry Imidazoles Magnets Buffers Genetics Hydrogen-ion Concentration Polymerase Chain Reaction Water Journal Article Research Support, Non-u.s. Gov't |
| Content Type | Text |
| Resource Type | Article |
| Subject | Spectroscopy Environmental Chemistry Analytical Chemistry Biochemistry |
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