Bioelectrochemistry最新文献_第2页

Proof-of-concept bioelectrochemical characterization of Mycolicibacterium smegmatis for diagnostic applications 耻垢分枝杆菌诊断应用的概念验证生物电化学表征

IF 4.5 2区化学

Bioelectrochemistry Pub Date : 2026-10-01 Epub Date: 2026-03-09 DOI: 10.1016/j.bioelechem.2026.109277

Sunday Olakunle Oguntomi , Abhipsa Sahu , Yili Yang , Enrico Marsili

{"title":"Proof-of-concept bioelectrochemical characterization of Mycolicibacterium smegmatis for diagnostic applications","authors":"Sunday Olakunle Oguntomi , Abhipsa Sahu , Yili Yang , Enrico Marsili","doi":"10.1016/j.bioelechem.2026.109277","DOIUrl":"10.1016/j.bioelechem.2026.109277","url":null,"abstract":"<div><div>Elevated urease activity in tuberculosis-infected individuals is often suggestive of bacterial virulence by promoting survivability and establishment of the causative pathogen (<em>Mycobacterium tuberculosis</em>) in the host. Thus, heightened urease activity could be a promising biomarker for screening pathogenic mycobacterial strains<em>.</em> In this proof-of-concept study, we evaluate the suitability of electrochemical techniques for direct screening of mycobacterial strains based on urease activity. <em>Mycolicibacterium smegmatis</em> wildtype (WT), a derived knockout mutant of the LCP protein family (<em>∆0107</em>) with high urease activity, and its complement strain (<em>c-0107</em>) were coated in polydopamine (PDA) and immobilized on a screen-printed electrode (SPE) for microscopy and electrochemical characterization, in presence of exogenous redox mediators: potassium ferricyanide, anthraquinone, and riboflavin. Microscopy showed compatibility of PDA as a coating material for mycobacterial cells. Electrochemical analysis results indicated enhanced <em>M. smegmatis</em> electroactivity in the presence of anthraquinone, with higher current output in the strain with high urease activity. Experiments at different urea concentrations suggest that urea is not required for this screening approach. This work shows that electrochemical data can potentially distinguish mycobacterial strains based on urease activity. It also lays a groundwork in the model mycobacteria <em>M. smegmatis</em>, which could facilitate development of assays for pathogenic mycobacterial species.</div></div>","PeriodicalId":252,"journal":{"name":"Bioelectrochemistry","volume":"171 ","pages":"Article 109277"},"PeriodicalIF":4.5,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147388331","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Optimization of a MWCNTs-AuNPs composite-modified electrochemical immunosensor with anti-fouling property for highly sensitive and rapid detection of BNP in myocardial infarction-induced heart failure diagnosis MWCNTs-AuNPs复合修饰抗污染电化学免疫传感器在心肌梗死性心力衰竭诊断中的高灵敏度和快速检测

IF 4.5 2区化学

Bioelectrochemistry Pub Date : 2026-10-01 Epub Date: 2026-02-28 DOI: 10.1016/j.bioelechem.2026.109258

Jiaru Fu , Dewei Huang , Bolu Sun , Chengwen Li , Yuqiong Wu , Huajie Li , Jiali Kang , Haiying He , Xiangdong Wang , Yaru Zhang , Xuanxiu Da , Mian Chen , Lin Yang

{"title":"Optimization of a MWCNTs-AuNPs composite-modified electrochemical immunosensor with anti-fouling property for highly sensitive and rapid detection of BNP in myocardial infarction-induced heart failure diagnosis","authors":"Jiaru Fu , Dewei Huang , Bolu Sun , Chengwen Li , Yuqiong Wu , Huajie Li , Jiali Kang , Haiying He , Xiangdong Wang , Yaru Zhang , Xuanxiu Da , Mian Chen , Lin Yang","doi":"10.1016/j.bioelechem.2026.109258","DOIUrl":"10.1016/j.bioelechem.2026.109258","url":null,"abstract":"<div><div>Brain natriuretic peptide (BNP) is a sensitive biomarker for acute heart failure (AHF). Rapid, sensitive, and anti-fouling BNP detection in serum remains clinically unmet. Herein, a novel electrochemical immunosensor with synergistic signal amplification and anti-fouling ability was constructed via layered AuNPs/MWCNTs-AuNPs modification. Bottom AuNPs mitigate MWCNTs agglomeration and enable stable Anti-BNP immobilization via Au<img>S bonds, MWCNTs enhance conductivity, and top AuNPs amplify signals, forming an efficient electron-transport network. A nitrocellulose (NC) membrane was laminated for anti-fouling via rapid contaminant sieving. Under optimization, the sensor shows a linear range of 7.81–8 × 10<sup>3</sup> pg/mL for BNP, with a detection limit of 8.14 × 10<sup>−2</sup> pg/mL (3σ, <em>n</em> = 11), outperforming ELISA. It exhibits excellent selectivity (vs. cTn-I, glucose, IL-6), repeatability (RSD = 2.3%), and stability (92.4% retention over 30 days). Serum recovery rates of 102–105% confirm anti-fouling reliability. This cost-effective platform promises POCT for AHF and underpins anti-fouling biosensor development.</div></div>","PeriodicalId":252,"journal":{"name":"Bioelectrochemistry","volume":"171 ","pages":"Article 109258"},"PeriodicalIF":4.5,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147363735","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Electrochemical cardiac troponin I immunosensor platform integrated with electrochemically deposited Au nanoparticles decorated PtNi bimetallic sponge-like structures. 电化学沉积金纳米粒子修饰PtNi双金属海绵状结构的电化学心脏肌钙蛋白I免疫传感器平台。

IF 4.9 2区化学

Bioelectrochemistry Pub Date : 2026-09-15 DOI: 10.1016/j.bioelechem.2026.109443

Mustafa Ali Güngör, Merve Yıldırım, Filiz Kuralay

{"title":"Electrochemical cardiac troponin I immunosensor platform integrated with electrochemically deposited Au nanoparticles decorated PtNi bimetallic sponge-like structures.","authors":"Mustafa Ali Güngör, Merve Yıldırım, Filiz Kuralay","doi":"10.1016/j.bioelechem.2026.109443","DOIUrl":"https://doi.org/10.1016/j.bioelechem.2026.109443","url":null,"abstract":"<p><p>In this study, a novel, reproducible, and stable electrochemical detection platform was developed for the detection of cardiac troponin I (cTnI), one of the most common biomarkers of cardiovascular diseases. The immunosensing platform consisted of antibody functionalized electrochemically gold (Au) deposited sponge-like platinum‑nickel (PtNi)-based nanoparticles modified screen-printed carbon electrodes (SPCEs). A sponge-like surface yielded a high surface area that enabled effective Au deposition and enhanced electrochemical properties through a synergistic effect. Electrochemically deposited Au onto this surface not only improved electrochemical characteristics but also created an environment in which the antibody could settle effectively. The final version of the electrode demonstrated high sensitivity. The sensor (anti-cTnI/Au@Pt-Ni/SPCE) performance was achieved in the linear working range of 0.01 pg/mL-100 ng/mL with a low limit of detection (LOD) value of 8.09 fg/mL using EIS technique. The selectivity studies showed that the proposed electrode had successful results in the presence of important interfering species. Good recovery was obtained in diluted serum samples ranging between 97.3 and 103.6%. Amperometric detection strategy was also evaluated with the metal-based nanoparticles modified electrode, and a low LOD value of 3.93 fg/mL was obtained. The modified electrode was successfully characterized using microscopic, spectroscopic, contact angle, and electrochemical techniques.</p>","PeriodicalId":252,"journal":{"name":"Bioelectrochemistry","volume":" ","pages":"109443"},"PeriodicalIF":4.9,"publicationDate":"2026-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148965858","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Performance and functional flora of simultaneous nitrogen removal, desulfurization and electricity generation in sulfide autotrophic denitrification-anammox-MFC coupled system. 硫化物自养反硝化-厌氧氨氧化- mfc耦合系统同时脱氮、脱硫和发电的性能和功能菌群。

IF 4.9 2区化学

Bioelectrochemistry Pub Date : 2026-09-11 DOI: 10.1016/j.bioelechem.2026.109441

Changzi Guo, Dongchan Xi, Liyuan Shao, Xuemei Chen, Dongting Fan, Yong Zhang, Huimin Liu

{"title":"Performance and functional flora of simultaneous nitrogen removal, desulfurization and electricity generation in sulfide autotrophic denitrification-anammox-MFC coupled system.","authors":"Changzi Guo, Dongchan Xi, Liyuan Shao, Xuemei Chen, Dongting Fan, Yong Zhang, Huimin Liu","doi":"10.1016/j.bioelechem.2026.109441","DOIUrl":"https://doi.org/10.1016/j.bioelechem.2026.109441","url":null,"abstract":"<p><p>In this study, a novel SAD-anammox-MFC coupled system was constructed for simultaneous nitrogen removal, desulfurization, and electricity generation. The optimal total nitrogen (TN) removal efficiency of 82.1% was achieved under the following conditions: a sludge inoculation ratio (SADB:AnAOB) of 1:2, external resistance of 500 Ω, influent sulfide concentration of 300 mg S/L, and hydraulic retention time (HRT) of 60 h. The maximum power density (1406.25 mW/m<sup>3</sup>) occurred at 300 mg S/L and an HRT of 24 h. A longer HRT promoted complete sulfide oxidation and allowed anammox to become the dominant nitrogen removal pathway, with the highest coulombic efficiency (18.20%) at 60 h. Microbial community analysis revealed that the cathode was enriched with the anammox bacterium Candidatus Brocadia (35%) and denitrifying bacterium unclassified_f_PHOS-HE36 (5%), while the anode was dominated by Thiobacillus (15%-20%) and Sulfuricurvum (10%-15%), forming a stable functional zonation. This study provides a low-carbon and resource-oriented solution for treating sulfur- and nitrogen-containing wastewater.</p>","PeriodicalId":252,"journal":{"name":"Bioelectrochemistry","volume":" ","pages":"109441"},"PeriodicalIF":4.9,"publicationDate":"2026-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148928595","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Bioluminescence-based electrochemical sensor for dual-mode direct hydrocarbon detection in saline water utilizing Photobacterium leiognathi and d-luciferin-modified au-SPE 利用光杆菌和d-荧光素修饰的au-SPE进行盐水中碳氢化合物双模直接检测的生物发光电化学传感器

IF 4.5 2区化学

Bioelectrochemistry Pub Date : 2026-08-01 Epub Date: 2026-01-24 DOI: 10.1016/j.bioelechem.2026.109233

Arash Rasti , Muhamad Afiq Aziz , Zaira Zaman Chowdhury , Sook Mei Khor

{"title":"Bioluminescence-based electrochemical sensor for dual-mode direct hydrocarbon detection in saline water utilizing Photobacterium leiognathi and d-luciferin-modified au-SPE","authors":"Arash Rasti , Muhamad Afiq Aziz , Zaira Zaman Chowdhury , Sook Mei Khor","doi":"10.1016/j.bioelechem.2026.109233","DOIUrl":"10.1016/j.bioelechem.2026.109233","url":null,"abstract":"<div><div>Early detection of hydrocarbon pollution in saline ecosystems faces challenges due to their complexity and the limitations of current detection methods. Salinity, temperature variations, the presence of other organic matter, and weathering processes hinder the effectiveness of traditional techniques, while the cost and complexity of some advanced detection technologies limit their widespread application. In this study, a gold screen-printed electrode (Au-SPE) modified with d-luciferin was developed to monitor the metabolic response of <em>Photobacterium leiognathi</em> to hexane and aromatic hydrocarbons in saline water and seawater. The sensor works by capturing adenosine triphosphate (ATP)-dependent electron release associated with bacterial bioluminescence, which varies according to the type of hydrocarbon. D-luciferin was immobilized on the Au-SPE via a self-assembled monolayer using ethylenediamine and EDC/NHS coupling to create a biocompatible interface. CV analysis revealed time-dependent shifts of anodic and cathodic peaks from −0.5 V to +0.5 V. The presence of aromatic hydrocarbons increased both bioluminescence light emission and current, indicating metabolic stimulation. In contrast, hexane suppressed bioluminescence and decreased current, indicating metabolic inhibition. These distinct responses enable rapid and selective differentiation between different types of hydrocarbons. The developed biosensor exhibits strong potential for real-time monitoring of oil contamination and assessing water quality in saline ecosystems.</div></div>","PeriodicalId":252,"journal":{"name":"Bioelectrochemistry","volume":"170 ","pages":"Article 109233"},"PeriodicalIF":4.5,"publicationDate":"2026-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146073977","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Resourceful utilization of Bougainvillea horticultural waste for synchronous degradation and power generation in MFCs 九重葛园艺废弃物在mfc同步降解和发电中的资源化利用

IF 4.5 2区化学

Bioelectrochemistry Pub Date : 2026-08-01 Epub Date: 2026-01-24 DOI: 10.1016/j.bioelechem.2026.109237

Yeling Zhou, Yicheng Wu, Bingjun Shu, Feipeng Xu

{"title":"Resourceful utilization of Bougainvillea horticultural waste for synchronous degradation and power generation in MFCs","authors":"Yeling Zhou, Yicheng Wu, Bingjun Shu, Feipeng Xu","doi":"10.1016/j.bioelechem.2026.109237","DOIUrl":"10.1016/j.bioelechem.2026.109237","url":null,"abstract":"<div><div>The disposal of horticultural waste derived from <em>Bougainvillea</em> species poses substantial environmental challenges in coastal cities of southeastern China. This study innovatively employs <em>Bougainvillea</em> horticultural waste (BHW) as the main substrate in microbial fuel cells (MFCs) for simultaneous organic degradation and bioenergy recovery, with an acid-pretreated BHW-fed MFC (MFC-ABG) included for comparison. Results indicated that the untreated BHW-fed MFC (MFC-BG) achieved a peak voltage of 0.401 V and sustained operation for 19 days, coupled with 78.7% polysaccharide removal. Metagenomics showed that MFC-BG significantly enriched electroactive <em>Geobacter</em> (29.39%) and hydrolytic <em>Proteiniphilum</em> (2.69%), driving lignocellulose decomposition through oxidative auxiliary enzymes (AA4/AA6). Comparatively, MFC-ABG achieved an enhanced voltage of 0.706 V and a high polysaccharide reduction efficiency of 85.6%, benefits attributable to acid-induced substrate solubilization and glycoside hydrolase (GH)-dominated enzymatic shifts. Although microbial community diversity declined in both MFC systems, MFC-BG retained a higher species richness (MFC-BG: Sobs = 28,209; MFC-ABG: Sobs = 25,746), reflecting the adaptive resilience of the associated microbial community. This study confirms BHW as a viable feedstock for MFCs and clarifies the microbial mechanisms underlying the synergistic coupling of substrate degradation and electron transfer</div></div>","PeriodicalId":252,"journal":{"name":"Bioelectrochemistry","volume":"170 ","pages":"Article 109237"},"PeriodicalIF":4.5,"publicationDate":"2026-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146073978","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Deciphering the redox signature and reactivity of wines with differential pulse voltammetry 用差分脉冲伏安法破译葡萄酒的氧化还原特征和反应性。

IF 4.5 2区化学

Bioelectrochemistry Pub Date : 2026-08-01 Epub Date: 2026-02-03 DOI: 10.1016/j.bioelechem.2026.109239

Alice L. Dauphin, Samuel Guilbault, Stéphane Arbault

{"title":"Deciphering the redox signature and reactivity of wines with differential pulse voltammetry","authors":"Alice L. Dauphin, Samuel Guilbault, Stéphane Arbault","doi":"10.1016/j.bioelechem.2026.109239","DOIUrl":"10.1016/j.bioelechem.2026.109239","url":null,"abstract":"<div><div>Phenolic compounds, including polyphenols and tannins, contribute to the sensory characteristics of wines and help protect them against oxidation through their reductive properties. Linear or cyclic voltammetry methods were previously reported to monitor specific wine phenolic compounds and decipher on their antioxidant activity. Pulsed voltammetry methods improve selectivity and accuracy and recently raised further interest for wine studies. We report the use of differential pulse voltammetry-DPV to characterize each wine redox profile and reactivity. Without any prior solution preparation, DPV analysis in wine provides curves displaying several oxidation peaks assigned to families of reductive phenolic acids or anthocyanins, flavonoids and tannins. Wine redox profiles vary as a function of their color, winemaking process, grape variety, vintage, etc. DPV and cyclic voltammetry-CV allowed further to study wines when changing their composition in caffeic and gallic acids, demonstrating the reactivity between phenolic species. Finally, the oxidation of a red wine under air and oxygen-saturated conditions was monitored by colorimetric and DPV analyses, directly showing the correlation between color browning, decrease of reductive ability and dissolved oxygen level. This work demonstrates the effectiveness of DPV in directly deciphering the oxidation-reduction processes occurring during winemaking and wine ageing.</div></div>","PeriodicalId":252,"journal":{"name":"Bioelectrochemistry","volume":"170 ","pages":"Article 109239"},"PeriodicalIF":4.5,"publicationDate":"2026-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146136935","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Cu-enhanced microbiological corrosion resistance of CoNiV medium-entropy alloy cu增强CoNiV中熵合金的耐微生物腐蚀性能。

IF 4.5 2区化学

Bioelectrochemistry Pub Date : 2026-08-01 Epub Date: 2026-01-23 DOI: 10.1016/j.bioelechem.2026.109232

Zihao Wang , Xiaobao Zhou , Zuchuan Zhang , Lin Liu , Cong Li , Boxin Wei , Tangqing Wu

{"title":"Cu-enhanced microbiological corrosion resistance of CoNiV medium-entropy alloy","authors":"Zihao Wang , Xiaobao Zhou , Zuchuan Zhang , Lin Liu , Cong Li , Boxin Wei , Tangqing Wu","doi":"10.1016/j.bioelechem.2026.109232","DOIUrl":"10.1016/j.bioelechem.2026.109232","url":null,"abstract":"<div><div>Microbiologically influenced corrosion (MIC) critically compromises the integrity of metal structures. This study investigates the effect of copper on the MIC behavior of CoNiV–Cu<sub><em>x</em></sub> medium-entropy alloys (MEAs) in <em>Desulfovibrio vulgaris</em> environments. In sterile medium, increasing Cu reduced the combined film and charge transfer resistance, whereas in inoculated medium, the trend reversed. After 360 h, CoNiV–Cu<sub>10</sub> MEA formed a protective oxide layer (<em>δ</em><sub>eff</sub> = 0.912 nm), three times thicker than CoNiV MEA. The corrosion current and passivation current were significantly lower in Cu-rich alloys under MIC. The apparently adverse effect of Cu in sterile conditions was associated with modifications in passive film defect chemistry and charge-transfer processes, whereas under MIC conditions, Cu addition enhanced passive film stability, suppressed microbial adhesion, and improved MIC resistance. These findings provide insight for designing Cu-alloyed MEAs with superior performance in MIC environments.</div></div>","PeriodicalId":252,"journal":{"name":"Bioelectrochemistry","volume":"170 ","pages":"Article 109232"},"PeriodicalIF":4.5,"publicationDate":"2026-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146058377","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Enhanced microalgae-based microbial fuel cell performance using single-chamber photocatalyst air-cathode modification 利用单室光触媒空气阴极改性提高微藻微生物燃料电池性能

IF 4.5 2区化学

Bioelectrochemistry Pub Date : 2026-08-01 Epub Date: 2026-01-02 DOI: 10.1016/j.bioelechem.2026.109215

Hnin Thandar Myint , Yuka Yokoi , Lulu'atul Hamidatu Ulya , Chairat Treesubsuntorn , Yordkhuan Tachapermpon

{"title":"Enhanced microalgae-based microbial fuel cell performance using single-chamber photocatalyst air-cathode modification","authors":"Hnin Thandar Myint , Yuka Yokoi , Lulu'atul Hamidatu Ulya , Chairat Treesubsuntorn , Yordkhuan Tachapermpon","doi":"10.1016/j.bioelechem.2026.109215","DOIUrl":"10.1016/j.bioelechem.2026.109215","url":null,"abstract":"<div><div>To address the global challenges of fossil fuel depletion and climate change, attention has turned to alternative energy sources. Photosynthetic microalgae-based microbial fuel cells (AMFC) have emerged as a promising solution, utilizing bacteria to convert organic matter into energy. This study explores the improvement of electricity generation using single-chamber microalgae-based microbial fuel cells with a modified graphite-photocatalyst air cathode. Modified graphite air cathode using graphite-photocatalyst (TiO<sub>2</sub> and MnO<sub>2</sub>) was observed to enhance greater power production. The electricity produced by the AMFC system using a 25% TiO<sub>2</sub>-graphite mixture was the best potential air cathode, generating up to 5.56 ± 0.32 mW/m<sup>2</sup>. The higher power density is also obtained using the fabrication of a photocatalyst air cathode. The fabricated air cathode electrocatalyst can play a reasonable cost material for the enriched energy recovery in the AMFC and/or other such electrochemical devices. This study also investigates the power generation performance of algal microbial fuel cells under three electrical configurations: series, parallel, and mixed connection. Parallel connection showed the greatest power density of 23.82 ± 3.72 mW/m<sup>2</sup> among them. However, mixed configuration provided balanced performance, with moderate voltage, current, and power density. From these results, connection type plays an important role in optimizing AMFC performance for specific applications.</div></div>","PeriodicalId":252,"journal":{"name":"Bioelectrochemistry","volume":"170 ","pages":"Article 109215"},"PeriodicalIF":4.5,"publicationDate":"2026-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146073981","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A novel label-free electrochemical aptamer sensor based on base mismatch and strand displacement for detection of kanamycin 基于碱基错配和链位移的新型无标记电化学适体传感器检测卡那霉素。

IF 4.5 2区化学

Bioelectrochemistry Pub Date : 2026-08-01 Epub Date: 2026-02-07 DOI: 10.1016/j.bioelechem.2026.109246

Hua Ma , Xia Gu , Hao Yang , Qiuyan Lan , Dandan Wang , Yu Huang , Yanru Fan

{"title":"A novel label-free electrochemical aptamer sensor based on base mismatch and strand displacement for detection of kanamycin","authors":"Hua Ma , Xia Gu , Hao Yang , Qiuyan Lan , Dandan Wang , Yu Huang , Yanru Fan","doi":"10.1016/j.bioelechem.2026.109246","DOIUrl":"10.1016/j.bioelechem.2026.109246","url":null,"abstract":"<div><div>Misuse of kanamycin in animal husbandry has led to serious food safety issues. In this study, a label-free electrochemical aptasensor based on the base mismatch and strand displacement was developed for detection of kanamycin residue in agricultural products. A novel ferrocene-naphthalimide derivative was employed as the electroactive indicator. The effects of complementary DNA (cDNA) probe length, position and number of mismatched bases in aptamer-cDNA duplex on the performance of displacement-based aptasensor were systematically investigated. The experimental results were in well accordance with the molecular simulation results. Under optimal conditions, the aptasensor exhibited good reproducibility, stability, selectivity, and a wide linear range of 1.0 × 10<sup>−10</sup>–1.0 × 10<sup>−4</sup> g/mL, with a LOD of 1.1 × 10<sup>−11</sup> g/mL (S/N = 3). The proposed aptasensor was used to detect kanamycin residues in milk and chicken liver. Satisfactory recoveries and relative standard deviations indicated that the aptasensor was competent for detection of kanamycin residues in agricultural products.</div></div>","PeriodicalId":252,"journal":{"name":"Bioelectrochemistry","volume":"170 ","pages":"Article 109246"},"PeriodicalIF":4.5,"publicationDate":"2026-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146155504","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0