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Updated: Oct 20, 2026

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Identification of Antibacterial Immunity Proteins in Escherichia coli using MALDI-TOF-TOF-MS/MS and Top-Down Proteomic Analysis
Published on: May 23, 2021
Enumeration of Escherichia coli in cooked and raw meats by ion mobility spectrometry
1Ministry of Agriculture Fisheries and Food, Torry Research Station, Aberdeen, UK.
Abstract:
A novel method for enumerating Escherichia coli in foods is described. It is based on the production of o-nitrophenol (ONP) from o-nitrophenyl-beta-D-glucuronide as detected by an ion mobility spectrometer. The time taken for the detection of ONP in a food sample was inversely proportional to the logarithm of the initial E. coli population. Escherichia coli could be detected at a level of 10 g-1 within 9 h.

