Abstract
We developed a single-walled carbon nanotubes (SWCNTs)-based electrochemical biosensor for the detection of Bacillus subtilis, one of the microorganisms observed in Asian dust events, which causes respiratory diseases such as asthma and pneumonia. SWCNTs plays the role of a transducer in biological antigen/antibody reaction for the electrical signal while 1-pyrenebutanoic acid succinimidyl ester (1-PBSE) and ant-B. subtilis were performed as a chemical linker and an acceptor, respectively, for the adhesion of target microorganism in the developed biosensor. The detection range (102–1010 CFU/mL) and the detection limit (102 CFU/mL) of the developed biosensor were identified while the response time was 10 min. The amount of target B. subtilis was the highest in the specificity test of the developed biosensor, compared with the other tested microorganisms (Staphylococcus aureus, Flavobacterium psychrolimnae, and Aquabacterium commune). In addition, target B. subtilis detected by the developed biosensor was observed by scanning electron microscope (SEM) analysis.
Original language | English |
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Pages (from-to) | 269-274 |
Number of pages | 6 |
Journal | Chemosphere |
Volume | 175 |
DOIs | |
State | Published - 2017 |
Bibliographical note
Funding Information:This study was supported by the Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education (NRF-2016R1D1A1A09918327) and the Basic Science Research Program through NRF funded by the Ministry of Science, ICT & Future Planning (NRF-2015R1C1A1A02036406).
Publisher Copyright:
© 2017 Elsevier Ltd
Keywords
- Asian dust events
- Bacillus subtilis
- Biosensor
- Carbon nanotubes
- Pathogen