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Updated: Jan 25, 2026

Green Fluorescent Protein-based Expression Screening of Membrane Proteins in Escherichia coli
Published on: January 6, 2015
Direct Enumeration of Coliforms and Escherichia coli by Hydrophobic Grid Membrane Filter in 24 Hours using MUG
1QA Laboratories, 135 The West Mall, Toronto, Canada M9C IC2.
Abstract:
An improved 24-hour hydrophobic grid membrane filter HGMF method for coliform and Escherichia coli enumeration was developed. The new method, which uses a buffered MUG agar for the E. coli portion of the test, was subjected to a precollaborative validation study against the 3-tube MPN procedure encompassing 375 naturally contaminated and inoculated samples representing 25 food products. The HGMF/MUG method produced coliform and E. coli counts equivalent to the conventional method. The confirmation rate of MUG-positive colonies in this study was 98.1%.
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