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Sensitization of Escherichia coli to nisin by maltol and ethyl maltol
Author(s) -
Schved F.,
Pierson M.D.,
Juven B.J.
Publication year - 1996
Publication title -
letters in applied microbiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.698
H-Index - 110
eISSN - 1472-765X
pISSN - 0266-8254
DOI - 10.1111/j.1472-765x.1996.tb01139.x
Subject(s) - maltol , nisin , sensitization , escherichia coli , chemistry , microbiology and biotechnology , biology , biochemistry , immunology , antimicrobial , gene
F. SCHVED, M.D. PIERSON AND B.J. JUVEN. 1996. When used separately, 20 mmol 1 ‐1 maltol or 1600 AU ml ‐1 nisin resulted in a 0–0.6 log 10 reduction in viable counts of Escherichia coli in a buffer system. However, when added in combination they yielded a 1.8–5. 5–log‐cycle reduction in viable counts of E. coli at pH 5.0 and 6.8 respectively. It is postulated that maltol (and ethyl maltol) destabilizes the cell outer membrane by chelation of Mg 2+ and/or Ca 2+ , thus permeabilizing the E. coli cell to nisin.