Assertion: acetaldehyde | /r/AtLocation | thin oral biofilm
Facets:
Source sentences:
text: In addition, the fact that ethanol-derived acetaldehyde production was increased under aerobic conditions and at neutral to weakly alkaline environmental pH suggests that acetaldehyde can be produced in the thin oral biofilm and saliva, even in healthily maintained oral cavities, where oxygen is available enough and pH is neutral to weakly alkaline due to salivary flow.