Silicone-geranium essential oil blend for long-term antifouling coatings.

IF 2.6 3区生物学 Q3 BIOTECHNOLOGY & APPLIED MICROBIOLOGY Biofouling Pub Date : 2024-02-01 Epub Date: 2024-03-18 DOI:10.1080/08927014.2024.2328611

Ariane V Zmozinski, Rafael S Peres, Alexandre José Macedo, Emilene Mendes Becker, Amanda Pasinato Napp, Rafael Schneider, Jade Reisdörfer Silveira, Carlos Arthur Ferreira, Marilene H Vainstein, Augusto Schrank

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Abstract

This study explores the potential of geranium essential oil as a natural solution for combating marine biofouling, addressing the environmental concerns associated with commercial antifouling coatings. Compounds with bactericidal activities were identified by ¹³Carbon nuclear magnetic resonance (¹³C NMR). Thermogravimetric analysis (TGA) revealed minimal impact on film thermal stability, maintaining suitability for antifouling applications. The addition of essential oil induced changes in the morphology of the film and Fourier transform infrared spectroscopy (FTIR) analysis indicated that oil remained within the film. Optical microscopy showed an increase in coating porosity after immersion in a marine environment. A total of 18 bacterial colonies were isolated, with Psychrobacter adeliensis and Shewanella algidipiscicola being the predominant biofilm-forming species. The geranium essential oil-based coating demonstrated the ability to reduce the formation of Psychrobacter adeliensis biofilms and effectively inhibit macrofouling adhesion for a duration of 11 months.

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硅钛精油混合物，用于长期防污涂层。

本研究探讨了天竺葵精油作为一种天然解决方案来对抗海洋生物污损的潜力，以解决与商业防污涂料相关的环境问题。通过 13C 核磁共振（13C NMR）鉴定了具有杀菌活性的化合物。热重分析（TGA）显示，该化合物对薄膜热稳定性的影响极小，因此仍适用于防污应用。添加精油会导致薄膜形态发生变化，傅立叶变换红外光谱（FTIR）分析表明，精油残留在薄膜中。光学显微镜显示，在海洋环境中浸泡后，涂层孔隙率增加。共分离出 18 个细菌菌落，其中阿德利精神杆菌（Psychrobacter adeliensis）和海藻糖云菌（Shewanella algidipiscicola）是形成生物膜的主要菌种。以天竺葵精油为基础的涂层在 11 个月的时间里能够减少阿德利心杆菌生物膜的形成，并有效抑制大型污垢的附着。

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来源期刊

Biofouling 生物-海洋与淡水生物学

CiteScore

5.00

自引率

7.40%

发文量

审稿时长

1.7 months

期刊介绍： Biofouling is an international, peer-reviewed, multi-discliplinary journal which publishes original articles and mini-reviews and provides a forum for publication of pure and applied work on protein, microbial, fungal, plant and animal fouling and its control, as well as studies of all kinds on biofilms and bioadhesion. Papers may be based on studies relating to characterisation, attachment, growth and control on any natural (living) or man-made surface in the freshwater, marine or aerial environments, including fouling, biofilms and bioadhesion in the medical, dental, and industrial context. Specific areas of interest include antifouling technologies and coatings including transmission of invasive species, antimicrobial agents, biological interfaces, biomaterials, microbiologically influenced corrosion, membrane biofouling, food industry biofilms, biofilm based diseases and indwelling biomedical devices as substrata for fouling and biofilm growth, including papers based on clinically-relevant work using models that mimic the realistic environment in which they are intended to be used.