Assertion: lignin's group | /r/CapableOf | become charged
Facets:
value: below a ph of about 9
type: OTHER
value: negatively
type: MANNER
Source sentences:
text: This may be at first a surprising finding, since published models to represent lignin structure generally do not show groups that would become negatively charged below a pH of about 9 (Pearl 1967; Sakakibara 1980; Glasser and Sarkanen 1989).