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YEAST BLOTTERS: SURVIVAL OF YEAST AND BACTERIA
Author(s) -
Burton J. D.,
Ingledew W. M.
Publication year - 1982
Publication title -
journal of the institute of brewing
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.523
H-Index - 51
eISSN - 2050-0416
pISSN - 0046-9750
DOI - 10.1002/j.2050-0416.1982.tb04102.x
Subject(s) - yeast , bacteria , hemocytometer , biology , enumeration , microbiology and biotechnology , colorimeter , food science , biochemistry , genetics , mathematics , physics , combinatorics , quantum mechanics
The survival of yeast on yeast blotters with and without contaminating bacteria was monitored to determine whether or not microscopic analysis of yeast after shipment on blotters might be influenced by growth of such bacteria. To examine blotter yeast, they were resuspended and roughly balanced to known opacity by colorimeter—then precisely by hemacytometer. Suspensions were then analysed for survival by plating. It was determined that bacteria and yeast both die quickly on blotters but demonstrate varying levels of survival. It was verified that viable counts from blotters are not practical for enumeration purposes although qualitative knowledge can be gained from viable cell assessment.