Environmental Molecular Microbiology Research Laboratory, Department of Biotechnology, Thiruvalluvar University, Vellore, 632115, Tamil Nadu, India.
Electro-Materials Research Laboratory, Centre for Nanoscience and Technology, Pondicherry University, Puducherry, 605014, India.
Bioprocess Biosyst Eng. 2021 Jul;44(7):1441-1452. doi: 10.1007/s00449-021-02524-8. Epub 2021 Mar 12.
In the present investigation, biocorrosion inhibition efficiency of Syzygium aromaticum (clove) aqueous extract on carbon steel in presence of four corrosion causing bacterial strains (Bacillus subtilis, Streptomyces parvus, Pseudomonas stutzeri, and Acinetobacter baumannii) was explored. Weight loss, potentiodynamic polarization, and AC impedance studies were carried out with and without bacterial strains and clove extract. The results obtained from weight loss and AC impedance studies indicate that these corrosion causing bacterial strains accelerated the biocorrosion reaction and biofilm playing a key role in this process. However, the addition of clove extract into the corrosive medium decreased the corrosion current and increased the solution and charge transfer resistance. The significant inhibition efficiency of about 87% was archived in the mixed consortia system with clove extract. The bioactive compounds were playing an important role in the antibacterial activity of the clove extract. It was revealed that clove extract has both biocidal and corrosion inhibition properties.
在本研究中，研究了丁香（丁香）水提取物对碳钢在四种腐蚀性细菌（枯草芽孢杆菌、短小芽孢杆菌、施氏假单胞菌和鲍曼不动杆菌）存在下的生物腐蚀抑制效率。进行了失重、动电位极化和交流阻抗研究，有和没有细菌菌株和丁香提取物。失重和交流阻抗研究的结果表明，这些腐蚀性细菌菌株加速了生物腐蚀反应和生物膜在这个过程中起着关键作用。然而，将丁香提取物添加到腐蚀性介质中会降低腐蚀电流并增加溶液和电荷转移电阻。在添加丁香提取物的混合菌群系统中，实现了约 87%的显著抑制效率。生物活性化合物在丁香提取物的抗菌活性中起着重要作用。研究表明，丁香提取物具有杀菌和腐蚀抑制特性。
