GPC analysis of a steam exploded lignin from wheat straw showed Mw = 3605 and Mz = 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.

A FT-ICR MS study of lignin: determination of an unusual repetitive unit in steam exploded lignin from wheat straw

D'AURIA, Maurizio;RACIOPPI, Rocco
2011-01-01

Abstract

GPC analysis of a steam exploded lignin from wheat straw showed Mw = 3605 and Mz = 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.
2011
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11563/18351
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