木质素
解聚
单体
单甘醇
氢解
化学
有机化学
生物量(生态学)
软木
细胞壁
生物炼制
木质纤维素生物量
加氢脱氧
生物净化
聚合物
植物
原材料
选择性
生物化学
催化作用
生物合成
生物
酶
农学
作者
Mingjie Chen,Yanding Li,Fachuang Lu,Jeremy S. Luterbacher,John Ralph
出处
期刊:ACS Sustainable Chemistry & Engineering
[American Chemical Society]
日期:2023-06-28
卷期号:11 (27): 10001-10017
被引量:13
标识
DOI:10.1021/acssuschemeng.3c01320
摘要
The chemical complexity of lignin remains a major challenge for lignin valorization into commodity and fine chemicals. A knowledge of the lignin features that favor its valorization and which plants produce such lignins can be used in plant selection or to engineer them to produce lignins that are more ideally suited for conversion. Sixteen biomass samples were compositionally surveyed by NMR and analytical degradative methods, and the yields of phenolic monomers following hydrogenolytic depolymerization were assessed to elucidate the key determinants controlling the depolymerization. Hardwoods, including those incorporating monolignol p-hydroxybenzoates into their syringyl/guaiacyl copolymeric lignins, produced high monomer yields by hydrogenolysis, whereas grasses incorporating monolignol p-coumarates and ferulates gave lower yields, on a lignin basis. Softwoods, with their more condensed guaiacyl lignins, gave the lowest yields. Lignins with a high syringyl unit content released elevated monomer levels, with a high-syringyl polar transgenic being particularly striking. Herein, we distinguish phenolic monomers resulting from the core lignin vs those from pendent phenolate esters associated with the biomass cell wall, acylating either polysaccharides or lignins. The basis for these observations is rationalized as a means to select or engineer biomass for optimal conversion to worthy phenolic monomers.
科研通智能强力驱动
Strongly Powered by AbleSci AI