Galactan in Western Latch Wood

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A quantitative determination was made by the U. S. Forest Products Laboratory of the galactan in western larch woods and sawmill refuse to obtain data useful to those contemplating commercial ventures designed to produce and market various materials made of galactan. Galactan in the lateral roots of virgin trees ranged from approximately 11 to 23 percent, based on the weight of the oven-dry wood. The galactan content of slabwood from virgin-growth butt logs was found to be about 14 percent; from the middle logs, 4.2 to 10 percent; and from the top logs, about 5 percent. Butt logs from fire-killed virgin trees contained approximately 9 to 16 percent of galactan; the middle logs, 6.6 to 12.1 percent; and the top logs, 6.6 to 7.8 percent. Butt logs of stand thinnings contained from 3.8 to 5.3 percent of galactan; the middle logs, 2.1 to 3.5 percent; and the top logs, 2.2 to 3.1 percent.

Document Type: Journal Article

Affiliations: Chemists, Forest Products Laboratory, U. S. Forest Service, Madison, Wis.

Publication date: February 1, 1951

More about this publication?
  • The Journal of Forestry is the most widely circulated scholarly forestry journal in the world. In print since 1902, the Journal has received several national awards for excellence. The mission of the Journal of Forestry is to advance the profession of forestry by keeping forest management professionals informed about significant developments and ideas in the many facets of forestry: economics, education and communication, entomology and pathology, fire, forest ecology, geospatial technologies, history, international forestry, measurements, policy, recreation, silviculture, social sciences, soils and hydrology, urban and community forestry, utilization and engineering, and wildlife management. The Journal is published bimonthly: January, March, May, July, September, and November.
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