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A study of sulfite‐tolerant yeasts from comminuted lamb products.“
Author(s) -
Dillon VM,
Board RG
Publication year - 1990
Publication title -
biotechnology and applied biochemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.468
H-Index - 70
eISSN - 1470-8744
pISSN - 0885-4513
DOI - 10.1111/j.1470-8744.1990.tb00084.x
Subject(s) - sulfite , acetaldehyde , yeast , ethanol , chemistry , substrate (aquarium) , fructose , yeast extract , chromatography , fermentation , biochemistry , biology , ecology
The sulfite tolerance of meat yeasts was shown to be determined by pH, sulfite concentration, substrate availability, and the composition of the preincubation medium. Acetaldehyde production by Candida norvegica was sulfite‐induced and occurred during the exponential growth phase in sulfited (500 micrograms SO2 ml‐1) lab lemco glucose broth cultures buffered at pH 5, 6, or 7. Growth at pH 4, however, was inhibited by sulfite. Acetaldehyde production occurred in sulfited medium containing fructose or ethanol but not lactate nor a range of other assimilable substrates. A non‐acetaldehyde‐producing yeast, Candida vini, grew in sulfited (500 micrograms SO2 ml‐1) lab lemco broth containing glucose or lactate buffered at pH 6 or 7 but not at pH 4 or 5.