Assertion: vanillin | /r/CapableOf | give weaker yellow colour
Facets:
value: as a natural oxidation product
type: MANNER
Source sentences:
text: Well, if I come across any more that says that lignin, or flax lignin in particular, contains vanillin monolignol units in their structure that are primarily responsible for the red colour with the Wiesner reagent (while other sources say that vanillin, if present, probably as a natural oxidation product, gives a weaker yellow colour)