Optical fiber biosensor toward E-coli bacterial detection on the pollutant water

• Main Authors: Fallah, Hoorieh, Asadishad, Tannaz, Parsanasab, Gholam M., Harun, Sulaiman Wadi, Mohammed, Waleed S., Yasin, Moh
• Format: Article
• Published: Chulalongkorn Univ 2021
• Subjects: QC Physics; TD Environmental technology. Sanitary engineering; TK Electrical engineering. Electronics Nuclear engineering
• Online Access: http://eprints.um.edu.my/36131/; https://www.scopus.com/inward/record.uri?eid=2-s2.0-85126081853&doi=10.4186%2fEJ.2021.25.12.1&partnerID=40&md5=3d40d1e457cf4f6b4ed77dd21775b9a2

In this study, Zinc oxide (ZnO) nanorods based fiber optic biosensor has been reported for rapid and sensitive detection of Escherichia Coli (E-coli). A thin layer of Gold nanoparticles (Au) (around 50 nm) is coated on the tip of a multimode plastic optical fiber. ZnO Nanorods are grown on Au layer thorough hydrothermal technique. This sensor showed a very fast response within the first 10 second of contacting the present of polluted water with E-coli Different concentrations of E. coli from (1000 to 4000 CFU/ml) have been tested and a sharp trend of sensitivity was observed. This sensing platform shows promising potential for regular water and food quality monitoring of various pathogenic microorganisms. © 2021, Chulalongkorn University, Faculty of Fine and Applied Arts. All rights reserved.