Structural features of enzymatic hydrolysis lignin from the corn stalks and furfural residue

DOI

10.2991/ifeesm-15.2015.12How to use a DOI?

Keywords

structural features, lignin, corn stalks, furfural residue

Abstract

Structural features of enzymatic hydrolysis lignin from the corn stalks and furfural residue was compared with lignin extracted from paper-making black liquid (PBL). Lignin was characterized by FT-IR, GPC, 13C- and 1H- NMR analysis. Enzymatic hydrolysis lignin from the corn stalks (CS) had a 12.2% higher phenolic hydroxyl content and FR had a 4.74% higher than that of PBL. FR had lower alcoholic droxyl content than that of CS and PBL. The Mw of CS was determined to be 5,520Da, which was 1.5 times of the Mw of PBL (3,660 Da).The Mn of both FR and PBL had similar values of about 4000 Da. the Mn of CS was only 1903 Da. The polydispersity index (Mw/Mn) of CS and FR were calculated to be 1.92 and 1.70, respectively. The lignin of CS and FR consisted of -O-4units, the C- with -C=O originated from side chain oxidation via hemolytic cleavage and condensation of – structures during enzymatic hydrolysis process.

Copyright

© 2015, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Aixiao Fu
AU  - Zhui Li
AU  - En xiao Lian
AU  - Yilin Deng
AU  - Yanli Ma
PY  - 2015/09
DA  - 2015/09
TI  - Structural features of enzymatic hydrolysis lignin from the corn stalks and furfural residue
BT  - Proceedings of the 2015 International Forum on Energy, Environment Science and Materials
PB  - Atlantis Press
SP  - 54
EP  - 57
SN  - 2352-5401
UR  - https://doi.org/10.2991/ifeesm-15.2015.12
DO  - 10.2991/ifeesm-15.2015.12
ID  - Fu2015/09
ER  -