| Chemical composition of abaca (Musa textilis) leaf fibers used for manufacturing of high quality paper pulps. | |
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MedLine Citation:
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PMID: 16787004 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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The chemical composition of leaf fibers of abaca (Musa textilis), which are commonly used for high-quality paper pulp production, was thoroughly studied. The results revealed that the lignin content was 13.2% of the total fiber. The analysis of abaca fibers by pyrolysis coupled to gas chromatography-mass spectrometry (Py-GC/MS) released predominantly compounds arising from lignin and p-hydroxycinnamic acids, with high amounts of 4-vinylphenol. The latter compound was demonstrated to arise from p-coumaric acid by pyrolysis of abaca fibers in the presence of tetramethylammonium hydroxide, which released high amounts of p-coumaric acid (as the methyl derivative). Products from p-hydroxyphenyl (H), guaiacyl (G), and syringyl (S) propanoid units, with a predominance of the latter (H:G:S molar ratio of 1.5:1:4.9), were also released after Py-GC/MS of abaca fibers. Sinapyl and coniferyl acetates, which are thought to be lignin monomer precursors, were also found in abaca. The extractives content of the abaca fiber (0.4%) was low, and the most predominant compounds were free sterols (24% of total extract) and fatty acids (24% of total extract). Additionally, significant amounts of steroid ketones (10%), triglycerides (6%), omega-hydroxyfatty acids (6%), monoglycerides (4%), fatty alcohols (4%), and a series of p-hydroxycinnamyl (p-coumaric and ferulic acids) esterified with long chain alcohols and omega-hydroxyfatty acids were also found, together with minor amounts of steroid hydrocarbons, diglycerides, alpha-hydroxyfatty acids, sterol esters, and sterol glycosides. |
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Authors:
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José C del Río; Ana Gutiérrez |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Journal of agricultural and food chemistry Volume: 54 ISSN: 0021-8561 ISO Abbreviation: J. Agric. Food Chem. Publication Date: 2006 Jun |
Date Detail:
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Created Date: 2006-06-21 Completed Date: 2006-08-10 Revised Date: 2006-11-15 |
Medline Journal Info:
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Nlm Unique ID: 0374755 Medline TA: J Agric Food Chem Country: United States |
Other Details:
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Languages: eng Pagination: 4600-10 Citation Subset: IM |
Affiliation:
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Instituto de Recursos Naturales y Agrobiología de Sevilla, CSIC, P.O. Box 1052, E-41080 Seville, Spain. delrio@irnase.csic.es |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Gas Chromatography-Mass Spectrometry Industry Lignin / analysis Lipids / analysis Musa / chemistry* Paper* Plant Leaves / chemistry* |
| Chemical | |
Reg. No./Substance:
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0/Lipids; 9005-53-2/Lignin |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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