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Inhibition and stimulation of yeast growth by acetaldehyde

โœ Scribed by G. A. Stanley; N. G. Douglas; E. J. Every; T. Tzanatos; N. B. Pamment

Publisher
Springer Netherlands
Year
1993
Tongue
English
Weight
395 KB
Volume
15
Category
Article
ISSN
0141-5492

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โœฆ Synopsis

Acetaldehyde at above about 0.3 g/l inhibited yeast growth, suggesting that it may contribute to product inhibition in alcohol fermentations when present at high concentrations intracellularly. The toxic effects of acetaldehyde and ethanol were not mutually reinforcing, acetaldehyde appearing to alleviate slightly the effects of ethanol. In support of this, low concentrations of acetaldehyde greatly reduced the lag phase in ethanol-containing medium and increased the specific growth rate.

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