Instituto Politecnico Nacional-Centro Interdisciplinario de Ciencias Marinas, La Paz, Baja California Sur, Mexico.
Int Microbiol. 2024 Feb;27(1):81-90. doi: 10.1007/s10123-023-00371-z. Epub 2023 May 11.
For the control of biofouling, some paints based on compounds that are toxic to marine organisms have been used. There is an intensive search for biodegradable solutions that are friendly to non-target organisms. Bacteria have been shown to be a source of compounds with antifouling potential. In this work, the antifouling activity of a strain of Staphylococcus aureus was evaluated. Extracts activity against biofilm-forming bacteria and the toxicity against Artemia franciscana were evaluated. The extracts were incorporated in a hard gel and a paint matrix, and they were exposed to the sea. In both the laboratory and field, we found that the compounds produced by S. aureus have antifouling activity. The non-toxicity of the tested extracts against Artemia franciscana nauplii suggests that the extracts obtained from S. aureus could have a low ecological impact over non-target organisms. Significant differences were found in the percentage of organisms cover in hard gels with extracts and control. After 90 days, important differences were also observed between the percentage of organisms cover of the paints that contained extracts and the control. Dichloromethane extract is the most effective for the inhibition or delay of the settlement of organisms For this reason, they could be used in matrices with different applications, such as in the shipping industry, aquaculture, or any other in which biofouling is a cause of inconvenience.
为了控制生物污垢，已经使用了一些基于对海洋生物有毒的化合物的涂料。人们正在积极寻找对非目标生物友好的可生物降解的解决方案。已经证明细菌是具有抗污潜力的化合物的来源。在这项工作中，评估了一株金黄色葡萄球菌的抗污活性。评估了提取物对生物膜形成细菌的活性和对卤虫的毒性。将提取物掺入硬凝胶和涂料基质中，并将其暴露于海水中。在实验室和现场，我们发现金黄色葡萄球菌产生的化合物具有抗污活性。测试提取物对卤虫无节幼体没有毒性，这表明从金黄色葡萄球菌获得的提取物对非目标生物的生态影响可能较低。在含有提取物和对照的硬凝胶中，生物覆盖率的百分比存在显著差异。90 天后，还观察到含有提取物的涂料的生物覆盖率与对照之间存在重要差异。二氯甲烷提取物是抑制或延迟生物定殖最有效的提取物。因此，它们可以用于具有不同应用的基质中，例如航运业、水产养殖或任何其他因生物污垢而造成不便的行业。
