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Title: Chemical composition of lignin and lipids from tagasaste (Chamaecytisus proliferus spp. palmensis)
Authors: Marques, Gisela, Gutiérrez Suárez, Ana, Río Andrade, José Carlos del
Keywords: Tagasaste
Lipids
Lignin
Pyrolysis
Paper pulp
Issue Date: 2008
Publisher: Elsevier
Abstract: The chemical characterization of trimming residues of tagasaste (Chamaecytisus proliferus spp. palmensis), a hardy leguminous shrub that has been recently explored for pulp and paper production, was performed with especial emphasis in the composition of lignin and lipophilic extractives. Tagasaste was characterized by a high content of holocellulose (81%) and -cellulose (41%), while having a relatively low lignin content of 18.9%. The analysis of lignin was performed “in situ” by pyrolysis-gas chromatography/mass spectrometry (Py-GC/MS) and showed a composition with a guaiacyl:syringyl (G:S) molar proportion of 38:62 (S/G molar ratio of 1.6) and the absence of p-hydroxyphenyl (H) units. The high S/G ratio, together with its low lignin content makes tagasaste an adequate raw material for pulping. On the other hand, the relatively high acetone extractive content (1.4%) was mostly due to polar compounds and only 0.2% corresponded to lipophilic compounds. The lipophilic compounds, analyzed by GC and GC/MS, were mainly composed of fatty acids, including α-hydroxyfatty acids, and steroid compounds, such as free and conjugated (esters and glycosides) sterols.
Description: Instituto de Recursos Naturales y Agrobiología de Sevilla, CSIC, P.O. Box 1052, 41080- Seville, Spain E-mail address: delrio@irnase.csic.es (J.C. del Río)
URI: http://hdl.handle.net/10261/34895
ISSN: 0926-6690
???metadata.dc.identifier.doi???: http://dx.doi.org/10.1016/j.indcrop.2007.12.007
Citation: Industrial Crops and Products 28: 29-36 (2008)
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