Acetobacter can oxidize ethanol to acetic acid when oxygen is present.
As they´re pretty interesting to do experiments with, today I show you two different methods on how to obtain them from beer or old vinegar.
Furthermore, I´ll explain how to make a Bromothymol blue agar which indicates the presence of an acid (or let´s say of acetobacter) by changing its colour from green to yellow. instagram: floka_98