ABSTRACT

This study evaluated the synergistic effect of Jatropha curcas seed oil and sodium tetraborate as a preservative of Triplochiton scleroxylon wood against four selected fungi species. The experimental design consisted of seven treatments with different concentrations of sodium tetraborate and J. curcas seed oil at a concentration of 4000 μg/l in all treatments, except the control. Mycelia growth of the different fungi was measured daily in vitro for 4 days. Wood blocks of T. scleroxylon of 25 × 15 × 5 mm with 25% moisture content each were exposed to the 4 fungi for 16 weeks and weight loss was measured. As compared to the control, all the treatments influenced mycelia growth. Treatment with Jatropha seed oil was effective in reducing significantly the mycelia growth (P < .05). The higher the sodium tetraborate concentration, the lower the mycelium growth. Untreated samples gave highest weight loss of 25.15 ± 0.01% with Scopulariopsis sp., while treated samples yielded the lowest weight loss with values of 0.74 ± 0.01, 0.33 ± 0.01, 0.32 ± 0.01, and 0.07 ± 0.06 with Scopulariopsis sp., Poria placenta, Penicilium sp. and Mucor graphium, respectively. The combination of J. curcas seed oil and sodium tetraborate is a potential eco-friendly wood protectant against fungal attacks.

摘要

本研究评估了麻疯树籽油和四硼酸钠作为三棱木的防腐剂对四种选定真菌物种的协同作用。实验设计包括 7 个处理，在所有处理中使用不同浓度的四硼酸钠和麻疯树种子油，浓度为 4000 μg/l，除了对照。每天在体外测量不同真菌的菌丝体生长，持续 4 天。将 25 × 15 × 5 mm的T. scleroxylon 木块与 25% 的水分含量分别暴露于 4 种真菌 16 周并测量重量损失。与对照相比，所有处理均影响菌丝体生长。治疗麻风树籽油能显着降低菌丝体的生长 ( P  < .05)。四硼酸钠浓度越高，菌丝体生长越低。未经处理的样品与Scopulariopsis sp的重量损失最高，为 25.15 ± 0.01% 。，而处理过的样品的重量损失最低，值为 0.74 ± 0.01、0.33 ± 0.01、0.32 ± 0.01 和 0.07 ± 0.06，其中Scopulariopsis sp.、Poria placenta、Penicium sp .。和毛霉，分别。麻疯树的组合种子油和四硼酸钠是一种潜在的环保木材保护剂，可防止真菌侵袭。