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...

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Bibliographic Details
Published in:Journal of agricultural and food chemistry 2006-03, Vol.54 (6), p.2138-2144
Main Authors: Gutierrez, A, Rodriguez, I.M, Rio, J.C. del
Format: Article
Language:English
Subjects:
Alkanes - analysis
Biological and medical sciences
Cannabis - chemistry
chemical composition
fatty acid composition
Fatty Acids - analysis
Food industries
Fundamental and applied biological sciences. Psychology
gas chromatography
Gas Chromatography-Mass Spectrometry
hemp
industrial hemp bast fibers
Industry
lignin
Lignin - chemistry
lipid composition
Lipids - chemistry
mass spectrometry
Phytosterols - analysis
pulping
pyrolysis
Waxes - analysis
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Summary: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. Keywords: Industrial hemp; Cannabis sativa; bast fibers; paper pulp, lipids; lignin; steroids; pyrolysis
ISSN:0021-8561
1520-5118
DOI:10.1021/jf052935a