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Semicontinuous alcoholic fermentation of sugar cane blackstrap molasses by pressed yeast

✍ Scribed by Teresinha W. de Santos; Marina L. R. Vairo; Haroldo Hiss; Walter Borzani

Publisher
Springer Netherlands
Year
1992
Tongue
English
Weight
296 KB
Volume
14
Category
Article
ISSN
0141-5492

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F e d -b a t c h ethanol f e r m e n t a t i o n tests of sugar cane blackstrap molasses were carried out at 32Β°C and p H 4.5-5.0, using pressed yeast as inoculum, and with no air supply. Two values of the fermentor filling-up time were adopted: 5 h and 7 h. The feeding rates obeyed equation F = F o

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The efficiency of ethanol yield increased from 61% to 88% of the theoretical value as the filling-up time was approached in fed-batch fermentation with Saccharomyces cerevisiae. Temporary accumulation of ethanol within the yeast cells may explain the above variation.