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Study of the antioxidant capacity of Miscanthus sinensis lignins

Paper ID Volume ID Publish Year Pages File Format Full-Text
35614 45098 2010 6 PDF Available
Title
Study of the antioxidant capacity of Miscanthus sinensis lignins
Abstract

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.

Keywords
Lignin; Antioxidant; Phenolic groups; Organosolv fractionation; Autohydrolysis; Molecular weight
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Publisher
Database: Elsevier - ScienceDirect
Journal: Process Biochemistry - Volume 45, Issue 6, June 2010, Pages 935–940
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us