Centrifugal sedimentation immunoassays for multiplexed detection of enteric bacteria in ground water

Julia Litvinov, Scott T. Moen, Chung Yan Koh, Anup K. Singh

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

Waterborne pathogens pose significant threat to the global population and early detection plays an important role both in making drinking water safe, as well as in diagnostics and treatment of water-borne diseases. We present an innovative centrifugal sedimentation immunoassay platform for detection of bacterial pathogens in water. Our approach is based on binding of pathogens to antibody-functionalized capture particles followed by sedimentation of the particles through a density-media in a microfluidic disk. Beads at the distal end of the disk are imaged to quantify the fluorescence and determine the bacterial concentration. Our platform is fast (20 min), can detect as few as ~10 bacteria with minimal sample preparation, and can detect multiple pathogens simultaneously. The platform was used to detect a panel of enteric bacteria (Escherichia coli, Salmonella typhimurium, Shigella, Listeria, and Campylobacter) spiked in tap and ground water samples.

Original languageEnglish (US)
Article number014103
JournalBiomicrofluidics
Volume10
Issue number1
DOIs
StatePublished - Jan 1 2016

Fingerprint

immunoassay
Listeria
Shigella
Campylobacter
Microfluidics
pathogens
Water Purification
Groundwater
Pathogens
Enterobacteriaceae
Salmonella typhimurium
ground water
Immunoassay
Sedimentation
Drinking Water
bacteria
Bacteria
Fluorescence
Escherichia coli
platforms

ASJC Scopus subject areas

  • Genetics
  • Molecular Biology
  • Condensed Matter Physics
  • Materials Science(all)
  • Physical and Theoretical Chemistry

Cite this

Centrifugal sedimentation immunoassays for multiplexed detection of enteric bacteria in ground water. / Litvinov, Julia; Moen, Scott T.; Koh, Chung Yan; Singh, Anup K.

In: Biomicrofluidics, Vol. 10, No. 1, 014103, 01.01.2016.

Research output: Contribution to journalArticle

Litvinov, Julia ; Moen, Scott T. ; Koh, Chung Yan ; Singh, Anup K. / Centrifugal sedimentation immunoassays for multiplexed detection of enteric bacteria in ground water. In: Biomicrofluidics. 2016 ; Vol. 10, No. 1.
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