Preservative-efficacy of boric acid-triethanol amine solution against wood-decay fungi
S Doi, M Mori, Y Mineki
Laboratory preservative-efficacy tests were conducted using boric acid-triethanol amine (BTEA) solution in accordance with the JIS A 9201 (1991) test method excluding the standard weathering process. Sapwood specimens of Picea jezoensis or Fagus crenata to achieve nominal retentions of 0.40-41.2 kg/m³ of boric acid were exposed to Tyromyces palustris, Coriolus versicolor, Serpula lacrymans or Chaetomium globosum, respectively. Mean percentage mass loss data showed the following threshold values: 1.65-2.13 kg/m³ for Tyromyces palustris; 1.60-1.94 kg/m³ for Coriolus versicolor; 0.43-0.83 kg/m³ for Serpula lacrymans; 8.0-23.8 kg/m³ for Chaetomium globosum. The values against Coriolus versicolor and Serpula lacrymans were lower than those of Tim-Bor® as boric acid retention.
Keywords: BORIC ACID-TRIETHANOL AMINE (BTEA); TIM-BOR; JIS A 9201 TEST METHOD; TYROMYCES PALUSTRIS; SERPULA LACRYMANS; CORIOLUS VERSICOLOR; CHAETOMIUM GLOBOSUM; PICEA JEZOENSIS; FAGUS CRENATA
Conference: 94-05-29...06-03, Nusa Dua, Bali, Indonesia