ABSTRACT Natural products have been studied in order to ensure environmental sustainability, human health, and diminish the use of traditional products. The objective of this study was to evaluate the efficiency of pure andiroba (Carapa guianensis), copaiba (Copaifera langsdorffii) and jatropha (Jatropha curcas) oils and enriched with iodine (I2) on the biological resistance of Pinus elliottii wood to dry-wood termites (Cryptotermes brevis). The oils were enriched with 1%, 3%, and 5% of I2 and impregnated into the wood by cold immersion. The treated samples were subjected to volatilization and leaching. Volatilization and leaching did not affect the loss of mass caused by termites, except for treatments with pure and enriched with 1% iodine copaiba oil. Leached samples were more damaged. The addition of iodine to the oils resulted in a greater efficiency against termites. Andiroba (3% and 5% I2) and jatropha oils (5%) were the most efficient, providing total termite mortality.

O objetivo desta pesquisa foi avaliar a qualidade do tratamento preservativo das espécies de bambu Dendrocalamus giganteus e Bambusa vulgaris submetidas a dois métodos de tratamento. Os bambus foram colhidos em touceiras em Alegre e Jerônimo Monteiro, sul do Espírito Santo. As hastes foram seccionadas em colmos de 2,0 m de comprimento e tratadas em soluções de 1 e 3% de ingredientes ativos (i.a.) de um produto à base de cobre, cromo e boro (CCB). No método de imersão prolongada, os colmos foram imersos na solução por 5, 10 e 15 dias. No método de Boucherie modificado, a solução penetrou no bambu pela ação de uma pressão de 0,7 MPa. Foi avaliada a qualidade do tratamento por meio da penetração e da retenção do CCB nos colmos. Houve maior penetração de i.a. na base dos colmos e a retenção ficou abaixo da recomendada pela norma brasileira para tratamento de madeira.

This study aimed to evaluate the quality of preservative treatment of Bambusa vulgaris and Dendrocalamus giganteus bamboo species employing two treatment methods. The bamboos were collected in clumps in the municipalities of Alegre and Jerônimo Monteiro, southern of Espírito Santo State, Brazil. The stems were sectioned in 2.0 m-long culms and treated in solutions with 1 and 3% of the active ingredients (a.i.) of a product based on copper, chromium and boron (CCB). In the long-term immersion method, the culms were immersed in the solution for 5, 10 and 15 days. In the modified Boucherie method, the solution penetrated the bamboo species using a pressure of 0.7 MPa. Treatment quality was evaluated by means of penetration and retention of CCB in the culms. There was greater penetration of a.i. at the base of the culms, and retention was below recommendation according to the Brazilian standards for wood treatment.