Introduce of some effective extractives compounds in natural durability of wood

Wood is a natural and renewable material, which has many advantages. But also the substance has disadvantages, the most important is the wood biological deterioration by destructive agents. Natural durability of different wood species is different against wood deterioration. one of the most important factors affecting in the natural durability is wood extractives. In durable wood species, Phenolic compounds, resin acids, terpenoids and tropolons have antifungal activity and flavonoids, quinines, sesquiterpenoids and stilbene have anti-termite activity, and they make up the natural durability of wood. Many studies have been about the effect of wood extractives on natural durability of wood. Antifungal activity and anti-termite activity of compounds in some species have been identified. With more research can help that natural and environmentally friendly compounds to produce appropriate preservatives and enhance the wood durability. Tree Species with high natural durability can be grown in forests and used in special applications that high durability is required.