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

通信作者：Jiang, JC[1];Zhang, N[2];Jiang, JC[2]

机构：[1]Nanjing Forestry Univ, Coll Chem Engn, Jiangsu Coinnovat Ctr Efficient Proc & Utilizat Fo, Int Innovat Ctr Forest Chem & Mat, Nanjing 210037, Peoples R China;[2]Key Lab Biomass Energy & Mat, Nanjing, Jiangsu, Peoples R China;[3]Chinese Acad Forestry, Inst Chem Ind Forest Prod, Jiangsu Coinnovat Ctr Efficient Proc & Utilizat Fo, Nanjing 210042, Peoples R China;[4]CAF, Res Inst Subtrop Forestry, Hangzhou 311400, Zhejiang, Peoples R China;[5]Chinese Acad Forestry Sci, Beijing 100091, Peoples R China

年份：2025

卷号：202

外文期刊名：BIOMASS & BIOENERGY

收录：;EI(收录号：20252918799763);Scopus(收录号：2-s2.0-105010685215);WOS:【SCI-EXPANDED(收录号:WOS:001534569500001)】；

基金：We are grateful for the Fundamental Research Funds for the National Nonprofit Institute Research Grant of CAFINT (No. CAFYBB2022ZA002) , the National Natural Science Foundation of China (22408175) and the Research Start-up Funding of Nanjing Forestry University (163030305) .

语种：英文

外文关键词：Litsea cubeba; Lignin; Reductive catalytic fractionation; C -O hydrogenolysis; Monomeric phenols

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 valueadded 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 4n-propanolguaiacol derived from beta-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.