The DFRC method for lignin analysis. 2. Monomers from isolated lignins
The DFRC method for lignin analysis. 2. Monomers from isolated lignins
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DOI：
10.1021/jf970676m
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发表时间：
1998-02-01
影响因子：
6.1
通讯作者：
Ralph, J
中科院分区：
文献类型：
--
作者：
Lu, FC;Ralph, J
木质素的衍生化和还原裂解（DFRC 降解）过程中释放的单体已通过质谱和/或与真实化合物的 GC 保留时间比较来鉴定。代表软木、阔叶草和双子叶植物的几种分离木质素的主要单体已通过气相色谱法进行定量。在DFRC机制的基础上，对次要单体成分的来源进行了合理化；来自肉桂醇端基、醛、芳基甘油和α-羰基单元的产物已被鉴定。 DFRC 方法从分离的木质素中生产其诊断性主要单体，即过乙酸羟基肉桂酯，其产率与其他醚裂解分析方法生产的单体相当。
Monomers released from derivatization followed by reductive cleavage (DFRC degradation) of lignins have been identified by mass spectra and/or comparison of their GC retention times with authentic compounds. The primary monomers from several isolated lignins representing softwoods, hardwoods grasses, and dicots have been quantified by GC. Sources of the minor monomeric components have been rationalized on the basis of the DFRC mechanisms; products from cinnamyl alcohol endgroups, aldehydes, arylglycerols, and alpha-carbonyl units have been identified. From isolated Lignins, the DFRC method produces its diagnostic primary monomers, the hydroxycinnamyl peracetates, with yields comparable to the production of monomers from other ether-cleaving analytical methods.