文献类型：期刊文献

英文题名：Harnessing the power of lignin from Litsea cubeba fruit residues: Characterization and valorization

作者：Zhang, Kaili[1,2,3] Jiang, Xiao[2,3] Tao, Ran[2] Xie, Jingcong[2,3] Zhao, Jian[2,3] Zhang, Ning[2,3] Chen, Yicun[4] Wang, Yangdong[5] Wang, Kui[2,3] Jiang, Jianchun[1,2,3]

第一作者：Zhang, Kaili

机构：[1] Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, International Innovation Center for Forest Chemicals and Materials College of Chemical Engineering, Nanjing Forestry University, Nanjing, 210037, China; [2] Key Lab of Biomass Energy and Material, Jiangsu Province, China; [3] Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Institute of Chemical Industry of Forest Products, Chinese Academy of Forestry, Nanjing, 210042, China; [4] Research Institute of Subtropical Forestry, CAF, Zhejiang Province, Hangzhou, 311400, China; [5] Chinese Academy of Forestry Sciences, Beijing, 100091, China

年份：2025

卷号：202

外文期刊名：Biomass and Bioenergy

收录：EI(收录号：20252918799763);Scopus(收录号：2-s2.0-105010685215)

语种：英文

外文关键词：Catalyst selectivity - Fruits - Palladium compounds - Phenols - Plants (botany) - Solvents - Wood

摘要：Lignin is an important component of plants, and its utilization is essential for biorefinery. Litsea cubeba fruit residues (LSRs) are abundant renewable lignin-rich bioresource with enormous potential for producing value-added monophenols. Herein, the lignin from LFRs was isolated with organic solvent, which was characterized by two-dimensional HSQC-NMR, FT-IR, Py-GCMS and GPC. The results indicate that the lignin in LFRs is mainly composed of guaiacyl (G) subunits (93 %), with small amounts of syringyl (S)/p-hydroxyphenyl (H) structural subunits. The reductive catalytic fractionation (RCF) of LFRs was investigated using methanol (MeOH) as the solvent and a commercial Pd/C (5 wt% Pd) catalyst. Two major phenolic compounds, 4-n-propylguaiacol and 4-n-propanolguaiacol derived from β-O-4 structure, were generated with high yield (19.4 wt%). This result was different from G-type pine wood powder, where 4-n-propanolguaiacol was the main product with a selectivity of 93.8 %. Besides, the influences about several important reaction parameters like time, temperature, solvent, H2 pressure, and catalyst stability were also investigated based on monophenol yields and average molecular weight. Overall, the lignin components of Litsea cubeba fruit residues were identified and transformed into high functional phenolic chemicals in this work. ? 2025 Elsevier Ltd