Study of the antioxidant capacity of Miscanthus sinensis lignins

被引：146

作者：

Garcia, Araceli ^{[1
]}

Toledano, Ana ^{[1
]}

Angeles Andres, Maria ^{[1
]}

Labidi, Jalel ^{[1
]}

机构：

[1] Univ Basque Country, Chem & Environm Engn Dept, Donostia San Sebastian 20018, Spain

来源：

PROCESS BIOCHEMISTRY | 2010年 / 45卷 / 06期

关键词：

Lignin; Antioxidant; Phenolic groups; Organosolv fractionation; Autohydrolysis; Molecular weight; EUCALYPTUS-GLOBULUS; THERMAL-STABILITY; ORGANOSOLV; POLYPROPYLENE; ACID; PYROLYSIS; CELLULOSE; EXTRACTS; KRAFT; WOOD;

D O I：

10.1016/j.procbio.2010.02.015

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

The present work studied the antioxidant capacity of the lignin obtained from Miscanthus sinensis. As the lignin structure is very complex, extraction and separation processes highly influence obtained lignin structure and its properties, including the antioxidant activity. Lignin fractions were obtained from black liquor resulting from different fractionating and autohydrolysis processes of M. sinensis. Different lignin fractions with specific molecular weight were separated by ultrafiltration using different cut-off ceramic membranes (10 and 15 kDa). The physico-chemical properties, phenolic groups content and the antioxidant capacity of each lignin sample were studied. It was found that antiradical activity of the analyzed lignin samples was closely related with the used fractionating process (soda, organosolv and autohydrolysis treatments). The ultrafiltration process allows obtaining lignins with different antioxidant capacity, improving this property as the used cut-off was greater. (C) 2010 Elsevier Ltd. All rights reserved.

引用

页码：935 / 940

页数：6

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