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. 1967 Sep;15(5):1223–1228. doi: 10.1128/am.15.5.1223-1228.1967

Selective Inhibition of Escherichia coli in the Presence of Salmonella typhimurium by Phenethyl β-D-Galactopyranoside

M A Johnston 1, F S Thatcher 1
PMCID: PMC547170  PMID: 4965618

Abstract

Phenethyl β-d-galactopyranoside (PEG) was hydrolyzed by the β-galactosidase of Escherichia coli to form the toxic product phenethyl alcohol. Salmonella typhimurium did not hydrolyze PEG. In mixed culture, the ratio of S. typhimurium to E. coli was increased by growing the organisms in lactose broth containing 2.5% PEG. The high concentration of PEG required for inhibition of E. coli can be attributed to inadequate cell permeability rather than to prevention of β-galactosidase induction.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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