Chemical characterization of lignin and lipid fractions in industrial hemp bast fibers used for manufacturing high-quality paper pulps.
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.
Instituto de Recursos Naturales y Agrobiología, CSIC, P.O. Box 1052, 41080 Seville, Spain. anagu@irnase.csic.es
Ana
A
Gutiérrez
Isabel M
IM
Rodríguez
José C
JC
del Río
D000473:Alkanes / Q000032:analysis; D002188:Cannabis / Q000737:chemistry*; D005227:Fatty Acids / Q000032:analysis; D008401:Gas Chromatography-Mass Spectrometry; D007221:Industry; D008031:Lignin / Q000737:chemistry*; D008055:Lipids / Q000737:chemistry*; D010209:Paper; D010840:Phytosterols / Q000032:analysis; D014885:Waxes / Q000032:analysis
D000473:Alkanes; D005227:Fatty Acids; D008055:Lipids; D010840:Phytosterols; D014885:Waxes; D008031:Lignin