期刊名称：African Journal of Environmental Science and Technology
电子版ISSN：1996-0786
出版年度：2011
卷号：5
期号：2
页码：131-135
DOI：10.5897/AJEST10.210
语种：English
出版社：Academic Journals
摘要：Conventional preservatives are not only toxic to wood bio-deteriorators, but also to humans and animals. In an effort to find preservatives that are non-toxic to humans and animals, efficacy of water extracts of heartwood ofAzadirachtaindica(Neem) and leaves ofPerseaamericana(avocado) andCaricapapaya(pawpaw) at 0.24%, was tested on the durability of wood ofAlstoniabooneiby pressure impregnation and buried in a termite-prone field for 5 weeks following a modified EN 252 and Gay et al. (1957). Efficacy was tested on the basis of visual durability ratings, percentage hardness and mass losses of impregnated alstonia wood after burial. Though alstonia wood retained pawpaw extract least, pawpaw extract improved the durability of alstonia wood most. Pawpaw extract could be used to improve the durability of alstonia wood better at 0.72% (3x0.24%) and on triple treatment. 83% of Anloga furniture makers who saw the efficacy of pawpaw extract at 0.72% and on triple treatment, showed a high sense of interest in preservative botanical extracts.
