A FT-ICR MS Study of Lignin: Determination of an Unusual Structural Repetitive Unit in Steam Exploded Lignin from Wheat Straw

被引：8

作者：

D'Auria, Maurizio ^{[1
]}

Emanuele, Lucia ^{[1
]}

Racioppi, Rocco ^{[1
]}

机构：

[1] Univ Basilicata, Dipartimento Chim AM Tamburro, I-85100 Potenza, Italy

来源：

LETTERS IN ORGANIC CHEMISTRY | 2011年 / 8卷 / 06期

关键词：

Gel permeation chromatography; Lignin; steam explosion; FT-ICR MS; MALDI-TOF; H-1; NMR; C-13; SIZE-EXCLUSION CHROMATOGRAPHY; MOLECULAR-WEIGHT DISTRIBUTION; OXYGEN-MEDIATED DEGRADATION; TRANSFORM MASS-SPECTROMETRY; SCANNING PROBE MICROSCOPY; SURFACE-MORPHOLOGY; GRAFT-COPOLYMERS; HUMIC SUBSTANCES; FRACTAL ANALYSIS; FULVIC-ACIDS;

D O I：

10.2174/157017811796064386

中图分类号：

O62 [有机化学];

学科分类号：

070303 ; 081704 ;

摘要：

GPC analysis of a steam exploded lignin from wheat straw showed M-w = 3605 and M-z = 21155 g/mol and a bimodal distribution with molecular weights in the range 100-10000 g/mol. On the contrary, FT-ICR-MS showed that fragments with a mass higher than 4534 Da cannot be obtained. Furthermore, FT-ICR MS showed that lignin is not a completely random polymer, but it showed some regularity with a difference of 44.026 m/z (C2H4O) between the peaks. The distribution of Kendrick mass defect (KMD) in function of Kendrick nominal masses (KNM) showed the same behavior.

引用

页码：436 / 446

页数：11

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