Bacterial biofilm inactivation by plasma activated nanobubble water

IF 6.3 2区 工程技术 Q1 ENGINEERING, CHEMICAL Journal of water process engineering Pub Date : 2024-12-01 DOI:10.1016/j.jwpe.2024.106676
Bhagyashree Tiwari , Shifa Dinesh , V. Prithiviraj , Xianqin Yang , M.S. Roopesh
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Abstract

This research developed novel plasma activated nanobubble water (PANBW) by integrating atmospheric cold plasma and nanobubble water (NBW) technologies. Mixing of plasma reactive species with NBW to generate the PANBW makes it an effective solution for microbial biofilm inactivation and water treatment, possibly by leveraging the benefits of both technologies. Selected properties of PANBW, including the concentrations of reactive oxygen and nitrogen species (RONS) were characterized, and the stability of RONS during storage for 7 days were evaluated. The combination of argon and air as feed gases was used to determine the influence of feed gas type on RONS production and the effect of the generated PANBW on biofilm reduction. The effectiveness of PANBW in inactivating mixed-species bacterial biofilms was assessed against NBW, plasma activated water (PAW), and their combinations. This comparison involved treating biofilms of Salmonella enterica Typhimurium ATCC 13311 and Aeromonas australiensis, that were grown on stainless steel coupons by these solutions. The PANBW treatment was most effective in the inactivation of the tested mixed species biofilms with a reduction of >2 log CFU/cm2 in the biofilm population. The confocal laser scanning microscopy analysis was consistent with the bacterial inactivation results. This study highlights the potential of atmospheric cold plasma when combined with nanobubble technology, as a novel and efficient method for biofilm control and food safety applications.
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等离子体活化纳米泡水对细菌生物膜的灭活作用
本研究将大气冷等离子体技术与纳米泡水技术相结合,开发了新型等离子体活化纳米泡水(PANBW)。将等离子体反应物质与NBW混合生成PANBW,使其成为微生物生物膜灭活和水处理的有效解决方案,可能是利用这两种技术的优势。研究了PANBW的部分特性,包括活性氧和活性氮(RONS)的浓度,并评价了活性氧和活性氮(RONS)在7 d储存期间的稳定性。采用氩气和空气的组合作为原料气,确定了原料气类型对ron生成的影响以及生成的PANBW对生物膜还原的影响。研究了PANBW与NBW、血浆活性水(PAW)及其组合灭活混合种细菌生物膜的效果。这个比较包括用这些溶液处理在不锈钢板上生长的肠沙门氏菌、鼠伤寒沙门氏菌ATCC 13311和澳大利亚气单胞菌的生物膜。PANBW处理对被试混合物种生物膜的失活效果最好,生物膜种群的失活效果为2 log CFU/cm2。共聚焦激光扫描显微镜分析结果与细菌灭活结果一致。该研究强调了大气冷等离子体与纳米气泡技术相结合的潜力,作为一种新的有效的生物膜控制和食品安全应用方法。
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来源期刊
Journal of water process engineering
Journal of water process engineering Biochemistry, Genetics and Molecular Biology-Biotechnology
CiteScore
10.70
自引率
8.60%
发文量
846
审稿时长
24 days
期刊介绍: The Journal of Water Process Engineering aims to publish refereed, high-quality research papers with significant novelty and impact in all areas of the engineering of water and wastewater processing . Papers on advanced and novel treatment processes and technologies are particularly welcome. The Journal considers papers in areas such as nanotechnology and biotechnology applications in water, novel oxidation and separation processes, membrane processes (except those for desalination) , catalytic processes for the removal of water contaminants, sustainable processes, water reuse and recycling, water use and wastewater minimization, integrated/hybrid technology, process modeling of water treatment and novel treatment processes. Submissions on the subject of adsorbents, including standard measurements of adsorption kinetics and equilibrium will only be considered if there is a genuine case for novelty and contribution, for example highly novel, sustainable adsorbents and their use: papers on activated carbon-type materials derived from natural matter, or surfactant-modified clays and related minerals, would not fulfil this criterion. The Journal particularly welcomes contributions involving environmentally, economically and socially sustainable technology for water treatment, including those which are energy-efficient, with minimal or no chemical consumption, and capable of water recycling and reuse that minimizes the direct disposal of wastewater to the aquatic environment. Papers that describe novel ideas for solving issues related to water quality and availability are also welcome, as are those that show the transfer of techniques from other disciplines. The Journal will consider papers dealing with processes for various water matrices including drinking water (except desalination), domestic, urban and industrial wastewaters, in addition to their residues. It is expected that the journal will be of particular relevance to chemical and process engineers working in the field. The Journal welcomes Full Text papers, Short Communications, State-of-the-Art Reviews and Letters to Editors and Case Studies
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