Assertion: formed vanillin | /r/HasSubevent | oxidation in the reaction zone
Facets:
value: in the reaction zone
type: LOCATION
Source sentences:
text: It is well known that when lignin substance is subjected to alkaline oxidation under conditions in which vanillin is formed, that the formed vanillin is itself subject to oxidation in the reaction zone, and that to this extent the net vanillin yield is thereby decreased.