Figure 6.
2D-HSQC NMR spectrum of lignin with variation of the extraction duration from 10 to 30 min (150 °C). (A–E): Side-chain regions: (A′–E′): Aromatic regions.
Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.