Assertion: lignin's group | /r/HasProperty | black rings
Facets:
Source sentences:
text: The most characteristic cross-peaks of lignin macromolecule are found in the region of CH 2 groups (black rings), where they correspond to the primary aliphatic network present in lignin G–CH 2 –CH 2 –CH(R)–OH/R located at the α and β positions, bounded to the guaiacol ring.