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Chemical characterization of lignin and lipid fractions in industrial hemp bast fibers used for manufacturing high-quality paper pulps

Authors :
José C. del Río
Isabel Rodriguez
Ana Gutiérrez
European Commission
Ministerio de Ciencia y Tecnología (España)
Source :
Digital.CSIC. Repositorio Institucional del CSIC, instname
Publication Year :
2006

Abstract

Instituto de Recursos Naturales y Agrobiología, CSIC, P.O. Box 1052, 41080 Seville, Spain<br />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.<br />This study has been supported by the Spanish Ministerio de Ciencia y Tecnología (MCyT) and FEDER funds (Projects AGL2002-00393).

Details

ISSN :
00218561
Volume :
54
Issue :
6
Database :
OpenAIRE
Journal :
Journal of agricultural and food chemistry
Accession number :
edsair.doi.dedup.....5434ee567b50e90f04ea3ae8fae1a40e