Abstract This work aimed at evaluating the possible use of several organic compounds as novel conservation products against the biocolonization of cultural heritage materials. In a first step, the antifungal activity of 10 selected essential oil (EOs) constituents was tested against a strain of Aspergillus niger collected from a Roman mural painting (Pompeii, Italy). According to antifungal assays, thymol, eugenol and cinnamaldehyde provided a strong and enduring inhibition effect. These properties open the way to the possible exploitability of EOs constituents for middle and long-term protection applications. In this perspective, the three compounds were exposed to different light conditions with the purpose of assessing their stability under photo-oxidation conditions. After ageing, Fourier transform infrared spectroscopy (FTIR) analysis and in vitro antifungal assays were performed. The collected results proved that light exposure had a critical negative effect on the antifungal capability of cinnamaldehyde samples. On the contrary, composition and properties of eugenol and thymol were not affected by ageing, confirming their possible use in the future development of long-lasting conservation products.

中文翻译：

---

评估几种精油成分的可利用性，作为对抗文化遗产生物定植的新型生物处理方法

摘要 这项工作旨在评估几种有机化合物作为新型保护产品的可能用途，以防止文化遗产材料的生物殖民化。在第一步中，针对从罗马壁画（意大利庞贝城）收集的黑曲霉菌株测试了 10 种选定的精油 (EO) 成分的抗真菌活性。根据抗真菌试验，百里酚、丁子香酚和肉桂醛提供了强大而持久的抑制作用。这些特性为 EOs 成分在中长期保护应用中的可利用性开辟了道路。从这个角度来看，这三种化合物暴露在不同的光照条件下，目的是评估它们在光氧化条件下的稳定性。老化后，进行了傅里叶变换红外光谱 (FTIR) 分析和体外抗真菌试验。收集到的结果证明，光照对肉桂醛样品的抗真菌能力有严重的负面影响。相反，丁香酚和百里酚的成分和性质不受老化的影响，证实了它们在未来长效保护产品开发中的可能用途。