Analytical pyrolysis of hardwood and softwood lignins and its use in lignin-type determination of hardwood vessel elements

Journal Article · Sat Jan 01 04:00:00 EST 1983 · J. Wood Chem. Technol.; (United States)

DOI:https://doi.org/10.1080/02773818308085170· OSTI ID:5889770

Obst, J R

Pyrolysis, GC and mass spectrometry were performed on milled wood lignins and wood samples. Among the major pyrolysis products identified from loblolly pine lignin were: guaiacol, 4-methylguaiacol, 4-vinylguaiacol, vanillin, coniferaldehyde and coniferyl alcohol. White oak lignin pyrolysis products included: guaiacol, 4-methylguaiacol, vanillin, 2,6-dimethoxyphenol, 4-methyl-2,6-dimethoxyphenol, syringaldehyde and sinapaldehyde. By the identification of pyrolysis products it is thus possible to classify lignins as either guaiacyl-type or syringyl/guaiacyl-type. Pyrolysis of isolated vessel elements from white oak, white birch (Betula papyrifera) and American elm (Ulmus americana) indicated that vessel lignin is of the syringyl/guaiacyl type. 14 references.

• Research Organization: USDA Forest Service, Madison, WI
• OSTI ID: 5889770
• Journal Information: J. Wood Chem. Technol.; (United States), Journal Name: J. Wood Chem. Technol.; (United States) Vol. 3:4; ISSN JWCTD
• Country of Publication: United States
• Language: English

Related Subjects

09 BIOMASS FUELS
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BIRCHES
CARBOHYDRATES
CHEMICAL ANALYSIS
CHEMICAL REACTIONS
CHROMATOGRAPHY
CLASSIFICATION
CONIFERS
DECOMPOSITION
GAS CHROMATOGRAPHY
LIGNIN
MASS SPECTROSCOPY
OAKS
ORGANIC COMPOUNDS
PINES
PLANTS
POLYSACCHARIDES
PYROLYSIS
PYROLYSIS PRODUCTS
SACCHARIDES
SEPARATION PROCESSES
SPECTROSCOPY
STRUCTURAL CHEMICAL ANALYSIS
THERMOCHEMICAL PROCESSES
TREES
WOOD