This study investigated the efficacy of lauric arginate (LAE) as a potential preservative against wood deteriorating fungi. First, the antifungal properties of LAE against two brown rot fungi, Gloeophyllum trabeum (G.t.) and Rhodonia placenta (R.p.), and two white rot fungi, Trametes versicolor (T.v.) and Irpex lacteus (I.l.) were examined using malt-agar media as substrate. Then the biological resistance of LAE-treated wood specimens (10, 20, and 25 % LAE solutions) was tested following American Wood Protection Association (AWPA) E10 soil-block test procedures. The in vitro study showed LAE actively inhibited the growth of all the fungi tested compared to growth in control plates but there were no considerable changes observed in the morphology of fungi hyphae. Wood impregnated with LAE showed increased weight percent gain as a function of treatment concentration. Characterization of LAE-treated wood on a thermogravimetric analyzer showed LAE shifted the thermal degradation temperatures to lower stages but did not significantly improve the thermal stability of the treated specimen. LAE in wood significantly suppressed fungus growth, leading to decreased mass loss but it also leached out from wood specimens during fungi exposure.

中文翻译：

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月桂酸精氨酸 (LAE) 处理木材的抗真菌特性

本研究调查了月桂酸精氨酸 (LAE) 作为潜在防腐剂对抗木材腐烂真菌的功效。首先，LAE 对两种褐腐真菌的抗真菌特性，石竹（GT） 和罗多尼亚胎盘 (Rp)和两种白腐真菌，杂色栓菌 (Tv)和乳酸菌 (Il)使用麦芽琼脂培养基作为底物进行检查。然后按照美国木材保护协会 (AWPA) E10 土块测试程序测试经 LAE 处理的木材样本（10%、20% 和 25% LAE 溶液）的生物抗性。这体外研究表明，与对照平板中的生长相比，LAE 积极抑制所有测试真菌的生长，但在真菌菌丝的形态方面没有观察到明显的变化。用 LAE 浸渍的木材显示出重量百分比增加作为处理浓度的函数。在热重分析仪上对经 LAE 处理的木材进行表征表明，LAE 将热降解温度降低至较低阶段，但并未显着提高处理过的样品的热稳定性。木材中的 LAE 显着抑制真菌生长，从而减少质量损失，但在真菌暴露期间，它也会从木材样本中滤出。