Chemical composition of jute (Corchorus capsularis) fibers used for paper pulp manufacturing
The lipid and lignin composition of jute fibers has been characterized. The most predominant lipophilic compounds were high molecular weight ester waxes (24% of total extract), followed by free fatty acids (17%), free fatty alcohols (17%) and α-hydroxyfatty acids (14%). Additionally, significant amounts of alkanes (6%), ω-hydroxyfatty acids (6%), sterols (6%), steroid and triterpenoids ketones (3%) and steryl glycosides (1%) were also identified. The lignin was first analyzed “in situ” by Py-GC/MS and the isolated MWL subsequently characterized by 2D-NMR. A predominance of S over G lignin units, with only minor amounts of H units (H:G:S of 2:33:65) was found. The main inter-unit linkage present in was the β-O-4´ aryl-ether bond (72%) followed by β-β´ resinol-type substructures and with lower amounts of β-5´ phenylcoumaran and β-1´ spirodienone substructures.
| Main Authors: | , , , , , |
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| Format: | comunicación de congreso biblioteca |
| Language: | English |
| Published: |
2009-06-15
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| Subjects: | Jute, Corchorus capsularis, Fibers, Lipids, Lignin, |
| Online Access: | http://hdl.handle.net/10261/86425 |
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