Abstract: | The characteristics of cultivated yeast were studied after continuous aeration, aeration for the first hour and without aeration. The fatty acid content increased under aerobic conditions, while the level of storage sugars increased under anaerobic conditions. In a fermentation test, total number of cells and their viability and also the intracellular level of storage sugars and fatty acids were higher in yeast cultivated under aerobic conditions than in yeast cultivated under anaerobic conditions. Since there were no significant differences between the performance of yeast cultivated under continuous aeration and those with aeration for the first hour, the latter offer the best economic choice. |