Performance of optimized phage-based magnetoelastic biosensors for Salmonella typhimurium detection on tomatoes

M. K. Park, S. Li, K. Weerakoon, S. Horikawa, Y. Chai, N. Hiremath, V. A. Petrenko, B. A. Chin

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Scopus citations

Abstract

An optimized, phage-based magnetoelastic (ME) biosensor method was performed to detect Salmonella Typhimurium contaminates on the surface of tomatoes and to determine the detection limit. After serial inoculations of S. Typhimurium on the surface of the tomatoes, the S. Typhimurium on the surfaces was analyzed using an optimized ME biosensor method. Detection limit and sensitivity of the ME biosensor for detection of S. Typhimurium on tomatoes were determined. The resonant frequency shifts of the ME measurement sensors increased linearly with an increase in the concentration of S. Typhimurium. Contrastingly, the control sensors showed relatively constant and low magnitude frequency shifts. Detection limit and sensitivity of the ME biosensor method was determined to be (1.78 ± 0.17) log CFU/cm2 and 922.7 Hz.

Original languageEnglish
Title of host publicationChemical Sensors 10 -and- MEMS/NEMS 10
PublisherElectrochemical Society Inc.
Pages69-76
Number of pages8
Edition12
ISBN (Print)9781607683605
DOIs
StatePublished - 2013
EventSymposia on Chemical Sensors 10 - Chemical and Biological Sensors and Analytical Systems and Microfabricated and Nanofabricated Systems for MEMS/NEMS 10 - 222nd ECS Meeting/PRiME 2012 - Honolulu, HI, United States
Duration: 7 Oct 201212 Oct 2012

Publication series

NameECS Transactions
Number12
Volume50
ISSN (Print)1938-5862
ISSN (Electronic)1938-6737

Conference

ConferenceSymposia on Chemical Sensors 10 - Chemical and Biological Sensors and Analytical Systems and Microfabricated and Nanofabricated Systems for MEMS/NEMS 10 - 222nd ECS Meeting/PRiME 2012
Country/TerritoryUnited States
CityHonolulu, HI
Period7/10/1212/10/12

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