1. Chemical characterization of lignin and lipid fractions in industrial hemp bast fibers used for manufacturing high-quality paper pulps
- Author
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José C. del Río, Isabel Rodriguez, Ana Gutiérrez, European Commission, and Ministerio de Ciencia y Tecnología (España)
- Subjects
Paper ,engineering.material ,Mass spectrometry ,Lignin ,Gas Chromatography-Mass Spectrometry ,chemistry.chemical_compound ,Alkanes ,Organic chemistry ,Industry ,Chemical composition ,Industrial hemp ,Cannabis ,chemistry.chemical_classification ,Wax ,Pulp (paper) ,Fatty Acids ,Glycoside ,Phytosterols ,General Chemistry ,Cannabis sativa ,Lipids ,Bast fibers ,Paper pulp ,chemistry ,visual_art ,Waxes ,visual_art.visual_art_medium ,engineering ,Bast fibre ,Steroids ,General Agricultural and Biological Sciences ,Pyrolysis - Abstract
Instituto de Recursos Naturales y Agrobiología, CSIC, P.O. Box 1052, 41080 Seville, Spain, The chemical composition of lignin and lipids of bast fibers from industrial hemp (Cannabis sativa) used for high-quality paper pulp production was studied. Pyrolysis-gas chromatography/mass spectrometry (Py-GC/MS) of fibers showed a lignin with a p-hydroxyphenyl:guaiacyl:syringyl unit (H: G:S) molar proportion of 13:53:34 (S/G ratio of 0.64). p-Hydroxycinnamic acids, namely, p-coumaric and ferulic acids, were found in only trace amounts. Among the lipids, the main compounds identified by GC/MS of the hemp fibers extracts were series of n-alkanes, free and esterified sterols and triterpenols, waxes, and long-chain n-fatty acids. Other compounds such as n-aldehydes, n-fatty alcohols, steroid hydrocarbons, and steroid and triterpenoid ketones as well as steryl glycosides were also found., This study has been supported by the Spanish Ministerio de Ciencia y Tecnología (MCyT) and FEDER funds (Projects AGL2002-00393).
- Published
- 2006