Influence of biphasic phenoxyethanol-alkaline pretreatment on the correlation between inter-structure and enzymatic hydrolysis in bamboo residues.

Autor: He J; Anhui Provincial Engineering Center for High Performance Biobased Nylons, School of Materials and Chemistry, Anhui Agricultural University, Hefei, Anhui 230036, China., Zheng Y; Co-Innovation Center for Efficient Processing and Utilization of Forest Resources, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China., Lan K; Department of Forest Biomaterials, College of Natural Resources, North Carolina State University, Raleigh, NC 27695, USA., Huang C; Co-Innovation Center for Efficient Processing and Utilization of Forest Resources, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China. Electronic address: hcx@njfu.edu.cn.
Jazyk: angličtina
Zdroj: International journal of biological macromolecules [Int J Biol Macromol] 2024 Dec; Vol. 282 (Pt 2), pp. 136859. Date of Electronic Publication: 2024 Oct 25.
DOI: 10.1016/j.ijbiomac.2024.136859
Abstrakt: The effective promotion of delignification (67.6%) and xylan removal (44.8%) from bamboo residues using a 2-phenoxyethanol/sodium hydroxide solution (P/A) system is demonstrated, while simultaneously enriching oligosaccharides contents of the pre-hydrolysate to 10.2 g/L. Increasing the P/A ratio from 0:1 to 4:1 improves the enzymatic digestibility of the substrates from 55.7% to 70.1% at 100 °C and from 73.8% to 83.7% at 120 °C. Furthermore, partial correlation analysis demonstrates that the physiochemical properties, including delignification, xylan removal, and crystallinity, show a significant positive correlation with enzymatic hydrolysis efficiency. Higher temperatures and P/A ratios during alkaline biphasic pretreatment promote the shrinkage of plant cells and delignification, with temperature being a particularly significant driver. These findings provide valuable insights into the alkaline and biphasic pretreatment of biomass and facilitate the optimization of the bio-refining system.
Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(Copyright © 2024 Elsevier B.V. All rights reserved.)
Databáze: MEDLINE
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