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Title: Reduction of Oxidative Stain in Ochoˇ (Hura crepitans L.) = Reducciˇn de la Mancha de Oxidaciˇn en Ochoˇ (Hura crepitans L.)

Source: Research Note FPL-RN-0306. Madison, WI: U.S. Department of Agriculture, Forest Service, Forest Products Laboratory. 23 pages.

Author(s)Wiemann, Michael C.; Knaebe, Mark

Publication Year: 2007  View PDF »

Category: Research Notes

Abstract: The sapwood of ochoˇ (Hura crepitans) suffers from an oxidative stain that results in substantial loss in value, making it one of the most important utilization problems encountered among Bolivian timber species. Initiating kiln drying within 6 days of felling did not reduce staining of ochoˇ, although many boards with extensive interior stain had bright surfaces, so it is possible that immediate drying might reduce or eliminate discoloration. Shock treatments did not reduce staining either, except for the localized effects of surface hammering. Eighteen-hour treatment with a 5% solution of sodium metabisulfite reduced stain, although penetration was limited in many samples.

Keywords: Ocho├│, Hura crepitans, oxidative stain, discoloration, compression, vibration, shock treatment, sodium metabisulfite, sulfite

File size: 2 kb(s)

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RITS Product ID: 596
Current FPL Scientist associated with this product
Wiemann, Michael C.

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