The wine question of the day
Which substance, which is also responsible for the sherry tone, is formed during fermentation as a precursor of ethanol?
Your answer:
Sorry, that's not the right answer!
Correct answer is: Acetaldehyde
Excellent! that is the right answer.
Acetaldehyde
The colourless and very volatile liquid (ethanal, outdated ethanal) is the aldehyde of ethanol. The name is often mispronounced, the correct one is "acet-aldehyde". It is a natural component of almost all plant matter. The substance is formed during alcoholic fermentation with the release of carbon dioxide as a precursor of the final product, alcohol. Towards the end of fermentation, the proportion normally decreases very sharply. Acetaldehyde is present in all wines in normally small amounts and does not have any negative taste effects in low concentrations. It reacts with anthocyanins, catechins...
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