Do acetic bacteria use the electron transport chain when converting ethanol to acetic acid?
And is wikipedia inconsistent here in its definition of fermentation. It says fermentation
Fermentation takes place when the electron transport chain is unusable
(and this is consistent with (academic) microbiology books searchable on google books). Wikipedia defines acetic acid bacteria as
produce acetic acid during fermentation.
also
Some genera, such as Acetobacter, can oxidize ethanol to carbon dioxide and water using Krebs cycle enzymes. Other genera, such as Gluconobacter, do not oxidize ethanol, as they do not have a full set of Krebs cycle enzymes.
I read in microbiology books on google books, that acetic acid bacteria use oxygen as the terminal electron acceptor, and have a respiratory mechanism.
Brewing Microbiology edited by Fergus Priest p165
Acetobactor spp. possess a respiratory mechanism...Acetobactor spp. are obligately aerobic with a respiratory metabolism (O2 as the terminal electron acceptor)
So is wikipedia wrong to describe acetic acid bacteria as using fermentation?
I see mention of krebs cycle though, which I understand to be associated with respiration rather than fermentation. Also in this reaction/process :
$C_2H_6O\hspace{1mm}(ethanol) + O_2 \rightarrow C_2H_4O_2\hspace{1mm}(acetic\hspace{1mm}acid) + H_2O$
I see water mentioned but not carbon dioxide(if it had both I'd say that really looks like respiration, though it's being called oxidative fermentation). So I still can't really see whether it's respiration or fermentation, though it's being called fermentation (oxidative fermentation), yet there is the mention of krebs cycle enzymes (krebs cycle being associated with respiration), so it makes me unsure whether the electron transport chain is used or not.