Paraquat-induced lightwood in two European conifers - Scotch pine and Norway spruce
Paraquat treatment induced oleoresin-soaked lightwood in Scotch pine; borehole and ax-frill treatment methods were equally effective. Paraquat treatment of Norway spruce induced limited lightwood formation accompanied by heavy external oleoresin exudation. Thus paraquat treatment of Scotch pine and possibly Norway spruce could be commercially advantageous for increasing naval stores production from these species. Analysis of tall oil precursors (nonvolatile ether extractives) for resin acids, fatty acids, and nonsaponifiables showed that the increase from paraquat treatment was mainly from an increased resin acid content. The chemical composition of the resin acids from the lightwood and control wood areas was similar and consisted of the usual pimaric and abietic type resin acids found in conifers. The fatty acids were predominately unsaturated C/sub 18/ isomers. Turpentine of both species consisted mainly of ..cap alpha..-pinene, ..beta..-pinene, and 3-carene. The composition of the turpentine from the Scotch pine lightwood did not differ from that of the control wood. However, turpentine from the Norway spruce lightwood had an increased 3-carene content compared to that from the control.
- Research Organization:
- Forest Products Lab., Madison, WI
- OSTI ID:
- 5528881
- Journal Information:
- Wood Sci.; (United States), Vol. 10:4
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
CARBOXYLIC ACIDS
RECOVERY
OLEORESINS
PINES
PROCESSING
RESINS
TERPENES
TURPENTINE
WOOD
CHEMICAL COMPOSITION
CONIFERS
ORGANIC ACIDS
ORGANIC COMPOUNDS
ORGANIC POLYMERS
ORGANIC SOLVENTS
PETROCHEMICALS
PETROLEUM PRODUCTS
PLANTS
POLYMERS
SOLVENTS
TREES
140504* - Solar Energy Conversion- Biomass Production & Conversion- (-1989)