新型抗菌肽对90/10 CuNi合金微生物腐蚀的抑制作用

IF 4.5 2区 化学 Q1 BIOCHEMISTRY & MOLECULAR BIOLOGY
Nianting Xue, Hao Sun, Shihang Lu, Yizhen Yu, Wenyan Ma, Guangzhou Liu, Wenwen Dou
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引用次数: 0

摘要

在海洋环境下,微生物影响腐蚀(MIC)对CuNi合金的结构完整性构成严重威胁。本研究提出了一种新型抗菌肽(Tcs)与烷基二甲基苄基氯化铵(ADBAC)联合抑制嗜铁Desulfovibrio ferrophilus IS5诱导的90/10 CuNi合金MIC。通过细菌计数、环境参数分析、表面形态分析、失重测量和电化学测试,证明了抗菌和缓蚀效果。结果表明,180 ppb Peptide Tcs (180 Tcs)单独对嗜铁杆菌IS5几乎没有抑制作用,而与20 ppm ADBAC (20 ADBAC)联合使用时,对嗜铁杆菌IS5的抑制作用显著增强。具体来说,与单独使用20 ADBAC相比,20 ppm ADBAC +180 ppb Peptide Tcs (20 ADBAC-180 Tcs)组合进一步减少了一个数量级的无根细菌计数,而失重率和最大点蚀深度分别下降了约86%和61%。这些发现为优化使用小抗菌肽的传统杀菌剂系统和开发绿色、有效的海洋MIC控制策略提供了新的见解。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Inhibition of microbiologically influenced corrosion in 90/10 CuNi alloy by a novel antibacterial peptide
Microbiologically influenced corrosion (MIC) poses a serious threat to the structural integrity of CuNi alloys under marine service conditions. This study proposed a novel antibacterial peptide (Tcs) combined with Alkyl Dimethyl Benzyl Ammonium Chloride (ADBAC) to inhibit MIC in 90/10 CuNi alloy induced by Desulfovibrio ferrophilus IS5. Bacterial counts, environmental parameters analysis, surface morphological analyses, weight loss measurements, and electrochemical tests were conducted, through which the antibacterial and corrosion inhibition effects were demonstrated. The results showed that 180 ppb Peptide Tcs (180 Tcs) alone exerted almost no inhibitory effect on D. ferrophilus IS5, whereas a significant concentration-dependent enhancement was observed when Peptide Tcs was combined with 20 ppm ADBAC (20 ADBAC). Specifically, the 20 ppm ADBAC +180 ppb Peptide Tcs (20 ADBAC-180 Tcs) combination further reduced sessile bacterial counts by one order of magnitude compared to 20 ADBAC alone, while the weight loss rate and maximum pitting depth decreased by approximately 86 % and 61 %, respectively. These findings provide new insights into optimizing traditional biocide systems with small antimicrobial peptides and developing green, efficient strategies for controlling marine MIC.
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来源期刊
Bioelectrochemistry
Bioelectrochemistry 生物-电化学
CiteScore
9.10
自引率
6.00%
发文量
238
审稿时长
38 days
期刊介绍: An International Journal Devoted to Electrochemical Aspects of Biology and Biological Aspects of Electrochemistry Bioelectrochemistry is an international journal devoted to electrochemical principles in biology and biological aspects of electrochemistry. It publishes experimental and theoretical papers dealing with the electrochemical aspects of: • Electrified interfaces (electric double layers, adsorption, electron transfer, protein electrochemistry, basic principles of biosensors, biosensor interfaces and bio-nanosensor design and construction. • Electric and magnetic field effects (field-dependent processes, field interactions with molecules, intramolecular field effects, sensory systems for electric and magnetic fields, molecular and cellular mechanisms) • Bioenergetics and signal transduction (energy conversion, photosynthetic and visual membranes) • Biomembranes and model membranes (thermodynamics and mechanics, membrane transport, electroporation, fusion and insertion) • Electrochemical applications in medicine and biotechnology (drug delivery and gene transfer to cells and tissues, iontophoresis, skin electroporation, injury and repair). • Organization and use of arrays in-vitro and in-vivo, including as part of feedback control. • Electrochemical interrogation of biofilms as generated by microorganisms and tissue reaction associated with medical implants.
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