If oxygen gets in, the ethanol will oxidise into ethanoic acid and the drink will taste like vinegar. Methanol is used as a chemical feedstock. It’s toxic, so it is added to industrial ethanol ...

Fermentation is a slow reaction and takes several days or weeks to finish. If air is present, the oxygen causes the ethanol to oxidise to ethanoic acid, so the drink tastes of vinegar.

Oregon State University and South Korean researchers say they have made a key advance in turning spent coffee grounds into ...

Our studies have shown that ethanol treatment improves salt tolerance, and acetic acid improves drought tolerance. In fact, an experiment was conducted in which high salt stress was applied to ...