Structural elucidation of lignin-carbohydrate complexes (LCCs) from Chinese quince (Chaenomeles sinensis) fruit
In: International Journal of Biological Macromolecules, Jg. 116 (2018-09-01), S. 1240-1249
Online
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Zugriff:
The lignin-carbohydrate complexes (LCCs) of the mesocarp (MS) and near the endocarp (NE) of Chinese quince (Chaenomeles sinensis) fruits were analyzed using three different methods of fractioning: milled wood lignin (MWL), LCC extracted from crude MWL with acetic acid (LCC-AcOH), and Bjorkman LCC. The MWL and LCC fractions were characterized by carbohydrate composition analysis, SEC, FT-IR, Py-GC/MS, thermal analysis and 2D HSQC NMR. Notably, large amounts of arabinose and galactose remained in the Björkman LCC fractions suggesting a chemical bond between the lignin and pectin. MWL and LCC-AcOH fractions showed better thermal stability than the Björkman LCC fractions. The structure of MS lignin was similar to that of NE lignin; however, fractions from the different fractionation methods revealed differences. The MWL fractions were rich in benzyl ether and γ-ester linkages, while the Björkman LCC fractions contained phenyl glycoside and γ-ester linkages, and the LCC-AcOH fractions contained phenyl glycoside and benzyl ether linkages. These findings are helpful in understanding the nature of lignin and LCC in Chinese quince fruits and provide a theoretical support for their potential application.
Titel: |
Structural elucidation of lignin-carbohydrate complexes (LCCs) from Chinese quince (Chaenomeles sinensis) fruit
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Autor/in / Beteiligte Person: | Wang, Xue-De ; Ma, Yu-Xiang ; Qin, Guang-Yong ; Liu, Hua-Min ; Qin, Zhao |
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Zeitschrift: | International Journal of Biological Macromolecules, Jg. 116 (2018-09-01), S. 1240-1249 |
Veröffentlichung: | Elsevier BV, 2018 |
Medientyp: | unknown |
ISSN: | 0141-8130 (print) |
DOI: | 10.1016/j.ijbiomac.2018.05.117 |
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