Natural durability is one of the most rated features in wood end-use applications. In fact, several precious native tropical wood species produce timber of high natural durability, which is also related to long service life even for the highest hazard classes. However, selective logging is driving the existing volume of this group of species to near extinction. The remainder of the alternative species produces perishable timbers, which require synthetic chemical protection to prolong their service life but with detrimental effects on humans and the environment. Therefore, transferable durability has emerged as an alternative to gradually substitute traditional wood preservatives. From this approach, extractives from naturally durable wood species are removed and transferred to the non-durable wood species as an alternative environmental-friendly option for wood protection. Indeed, extractives from durable wood species have proven to have a deterrent effect on fungi, bacteria and termites and could be used to protect perishable wood species. Thus, this review aims to assess the prospects of developing environmentally friendly wood preservatives based on extractives sourced from highly natural, durable wood species to treat and add value to the group of perishable timbers. A step-wise analysis offers insights and challenges on (i) potential sources of extractives; (ii) effective extraction methods; (iii) extractive-based preservative formulation; and (iv) effective treatment methods for better preservative fixation for better wood protection. Accounts about the way forward for the development of extractive-based wood preservatives are also presented.

中文翻译：

---

使用耐用木材锯木厂作业侧流的提取物提高易腐烂木材的耐用性：综述

自然耐久性是木材最终用途应用中最受好评的特性之一。事实上，几种珍贵的本土热带木材树种生产的木材具有很高的自然耐久性，这也与较长的使用寿命有关，即使对于最高危险类别也是如此。然而，选择性伐木正在使该物种的现有数量接近灭绝。其余的替代物种生产易腐烂的木材，需要合成化学保护来延长其使用寿命，但会对人类和环境产生有害影响。因此，可转移耐久性作为逐渐替代传统木材防腐剂的替代品应运而生。从这个方法来看，从天然耐用木材树种中提取的提取物被去除并转移到非耐用木材树种中，作为木材保护的替代环保选择。事实上，耐用木材树种的提取物已被证明对真菌、细菌和白蚁具有威慑作用，可用于保护易腐烂的木材树种。因此，本综述旨在评估开发基于高度天然、耐用木材树种的提取物的环保木材防腐剂的前景，以处理易腐烂的木材并为其增加价值。逐步分析提供了以下方面的见解和挑战：(i) 提取物的潜在来源；(ii) 有效的提取方法；(iii) 基于提取物的防腐剂配方；(iv) 有效的处理方法，以实现更好的防腐固定，从而更好地保护木材。