Premium
EXPERIMENTAL CONDITIONS AFFECTING YEAST GROWTH
Author(s) -
Haukeli A. D.,
Lie S.
Publication year - 1971
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.2050-0416.1971.tb06941.x
Subject(s) - ergosterol , yeast , food science , fermentation , composition (language) , yield (engineering) , chemistry , yeast extract , biology , biochemistry , materials science , philosophy , linguistics , metallurgy
The growth‐regulating effects of fermentation temperature, medium composition, addition of ergosterol and introduction of trace amounts of oxygen have been studied for six yeasts. This investigation demonstrates some important experimental details which frequently impair the reproducibility of small‐scale fermentations. The necessity of a balanced composition of growth media and control of the content of ergosterol and of trace amounts of oxygen is stressed. Variations in the yield obtained in defined media, with added minimum amounts of essential growth factors only, were in the range of 30–100% of optimum growth. Commercial yeast extracts tested seemed not to contain any compounds with a stimulating effect similar to that of ergosterol.