Chromophores in cellulosics, VI. First isolation and identification of residual chromophores from aged cotton linters

In the present work, aged cotton linters have been analyzed for their chromophore content according to the CRI (“chromophore release & identification”) method. Despite the very low contents in the ppb range, nine chromophores have been unambiguously identified, which makes this account the first...

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Bibliographic Details
Published in:Cellulose (London) 2011-12, Vol.18 (6), p.1623-1633
Main Authors: Rosenau, Thomas, Potthast, Antje, Krainz, Karin, Yoneda, Yuko, Dietz, Thomas, Shields, Zenaida Peralta-Inga, French, Alfred D.
Format: Article
Language:English
Subjects:
Bioorganic Chemistry
Bleaching
Carbohydrates
Cellulose fibers
Ceramics
Chemistry
Chemistry and Materials Science
Chromophores
Composites
Cotton
Glass
Lignin
Natural Materials
Organic Chemistry
Physical Chemistry
Polymer Sciences
Quinones
Substrates
Sustainable Development
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Summary:In the present work, aged cotton linters have been analyzed for their chromophore content according to the CRI (“chromophore release & identification”) method. Despite the very low contents in the ppb range, nine chromophores have been unambiguously identified, which makes this account the first one on defined chromophoric structures isolated from cotton. A common feature of the chromophores are 2-hydroxy-[1,4]benzoquinone, 2-hydroxyacetophenone and 5,8-dihydroxynaphthoquinone moieties, which resemble chromophoric structures found in other cellulosic substrates, such as bleached pulps or fibers. The finding of these compounds in lignin-free cotton linters confirms the previous hypothesis that those chromophores are formed from (oxidized) carbohydrate structures rather than from lignin fragments.
ISSN:0969-0239
1572-882X
DOI:10.1007/s10570-011-9585-0