Details

Autor(en) / Beteiligte

• Cheng, Jinyuan
• Huang, Chen
• Zhan, Yunni
• Han, Shanming
• Wang, Jia
• Meng, Xianzhi
• Yoo, Chang Geun
• Fang, Guigan
• Ragauskas, Arthur J.

Titel

Effective biomass fractionation and lignin stabilization using a diol DES system

Ist Teil von

• Chemical engineering journal (Lausanne, Switzerland : 1996), 2022-09, Vol.443 (1), p.136395, Article 136395

Ort / Verlag

United States: Elsevier B.V

Erscheinungsjahr

2022

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• •Diol DES effectively fractionated bamboo with high removal of lignin and xylan.•Regenerated lignin possessed intact structure with high aryl ether content.•The mechanism of lignin protection was systematically investigated.•The proposed DES has excellent recyclability. A sustainable and renewable biorefinery will increase the economic viability of lignocellulose-derived products. In this study, a diol-based deep eutectic solvent (DES) was developed to reduce the recalcitrance of bamboo, facilitate saccharification and valorize the lignin fraction. The DES pretreatment dramatically enhanced glucan digestibility by the effective removal of lignin (as high as 85.45%) and xylan (91.12%). Notably, the recovered lignin from DES pretreatment was protected during the fractionation, showing well-preserved β-O-4 structures (31.82%–59.06%). The mechanism of lignin protection was analyzed to be accomplished by incorporating the diol hydroxyl functional groups into the α position of the lignin β-O-4 structure via etherification. This study highlighted that diol DES is a promising pretreatment solvent to valorize both cellulose and lignin fractions with high enzymatic hydrolysis yield and high-quality lignin co-product.