Assertion: lignin | /r/HasProperty | gonçalves
Facets:
Source sentences:
text: Hydroxymethylation can be carried out by mixing lignin with formaldehyde at a specific ratio and reacting at 75 °C to 90 °C in an alkaline medium (Benar et al. 1999; Gonçalves and Benar 2001; Malutan et al. 2008).