Extracts from Black Locust as Wood Preservatives: Extraction of Decay Resistance from Black Locust Heartwood

Abstract

Extraction of black locust hcartwood with a scrics of solvcnts, including hcxanc, cthyl acctatc, mcthanol and aqucous acctone, Icft thc normally durablc wood susccptiblc to dccay by thc brown rot fungus Gloeophyllum trabeum.Jhc combincd cxtracts of black locust wcrc ablc to impart a high Icvcl of dccay rcsistance to aspcn, a normally nondurablc wood. Scvcral singlc stagc cxtraction tcchniqucs wcrc also tcstcd with thc mcthanol extract rcmoving thc most dccay rcsistance from btack locust, and providing aspcn with thc most dccay rcsistance. Experimental Extractives content of black locustWood mcal was prcparcd by passing air dried btack locust hcartwood through a planar and collccting the shavings.Thc extractives content of the mcal was thcn dctcrmincd using each of thc solvent Holzforschung / Vol.

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