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Smart dressings for wound monitoring and treatment: a review with focus on electrical stimulation therapy 用于伤口监测和治疗的智能敷料:以电刺激治疗为重点的综述
IF 4.9 2区 化学 Q1 CHEMISTRY, ANALYTICAL Pub Date : 2026-04-01 Epub Date: 2026-02-11 DOI: 10.1016/j.microc.2026.117345
Xiaoping Lin , Li Yang , Ting Xu , Bowen Cheng , Hao Liu
Wound healing is a complex biological process involving multiple stages, such as cell proliferation, angiogenesis, and tissue remodeling. Chronic wounds, due to their intricate pathology and significant management difficulties, impose a substantial burden on patients and healthcare systems. Recent advances in materials science, microelectronics, and artificial intelligence have catalyzed the development of smart dressings, offering innovative solutions for wound care. This comprehensive review summarizes the development of multifunctional smart dressings. It highlights technologies for real-time monitoring of key wound biomarkers (e.g., pH, temperature, moisture, and oxygen levels) and provides a comparative analysis of drug delivery mechanisms, spanning passive diffusion, stimulus-responsive, and actively triggered release systems. The roles of physical therapies, including thermal, ultrasound, and phototherapeutic stimulation, are also discussed. Particular emphasis is placed on electrical stimulation (ES) therapy, owing to its unique mechanistic actions and strong compatibility with smart dressing platforms. This section details ES strategies, parameter optimization, the need for adaptive parameter adjustment guided by wound microenvironment feedback, and its synergistic potential with other therapies. Finally, the review identifies key challenges regarding system integration and clinical translation, while underscoring the promising future of smart dressings in enabling automated, personalized wound management.
伤口愈合是一个复杂的生物学过程,涉及细胞增殖、血管生成和组织重塑等多个阶段。慢性伤口由于其复杂的病理和重大的管理困难,给患者和卫生保健系统带来了沉重的负担。材料科学、微电子学和人工智能的最新进展促进了智能敷料的发展,为伤口护理提供了创新的解决方案。本文综述了多功能智能敷料的研究进展。它强调了实时监测关键伤口生物标志物(如pH值、温度、湿度和氧气水平)的技术,并提供了药物传递机制的比较分析,包括被动扩散、刺激反应和主动触发释放系统。物理疗法的作用,包括热,超声,光疗刺激,也进行了讨论。特别强调的是电刺激(ES)疗法,由于其独特的机械作用和与智能敷料平台的强兼容性。本节详细介绍ES策略、参数优化、伤口微环境反馈引导下的自适应参数调整需求,以及与其他疗法的协同潜力。最后,该综述确定了系统集成和临床转化方面的关键挑战,同时强调了智能敷料在实现自动化、个性化伤口管理方面的美好未来。
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引用次数: 0
Immunocatalytic La₂O₃-Fe-Ni nanozyme detection of porcine pepsin in food matrices through ECL-colourimetric signal amplifications 免疫催化La₂O₃-Fe-Ni纳米酶检测食品基质中猪胃蛋白酶的ecl比色信号放大
IF 4.9 2区 化学 Q1 CHEMISTRY, ANALYTICAL Pub Date : 2026-04-01 Epub Date: 2026-02-09 DOI: 10.1016/j.microc.2026.117323
Batrisyia Safwah Mohd Salleh, Fareeha Arshad, Koo Pey Ting, Minhaz Uddin Ahmed
The presence of porcine pepsin in food items is widespread globally. Despite the prohibition of such ingredients in food products within religious and vegan communities, as well as for medical concerns, there is still uncertainty in determining their origin in food products. The failure of certain businesses in the food industry to clearly label porcine pepsin-containing food products necessitates an intervention that this study can provide. In the present study, we report dual-mode detection of porcine pepsin using a novel La2O3-Fe-Ni nanozyme in the developed immunosensor. The nanozyme exhibited enhanced peroxidase-mimicking activity, which collaboratively boosted the electrochemiluminescence signal generated. The immunosensor achieved a significantly low detection limit for porcine pepsin in both detection modes. The additional integration of machine learning enables precise and accurate porcine pepsin prediction. The practical application of the immunosensor was validated by spiking food samples, which indicated promising recoveries.

Novelty statement and impact

This study assembled a novel La2O3-Fe-Ni nanozyme for the colourimetric-electrochemiluminescence immunodetection of porcine pepsin in food samples. The immunocomplexes formed between anti-pepsin antibody and the target are separated through magnetism, which allows only the specific immunocomplexes to be recovered and utilised in the detection modes, omitting the need for blocking agents. The immunocomplexes were directly drop-cast onto the electrode and wells of a microtiter plate, which bypasses the time-consuming washing steps and layer-by-layer incubation of nanozyme, target, and antibody; while reducing noise signals from blocking agents. Additionally, the nanozyme exhibited remarkable peroxidase-mimicking activity and kinetic parameters, surpassing those of horseradish peroxidase and previously published literature on nanozymes. The kinetic parameters of the counter nanomaterials were also established, which had not been previously evaluated. The wide linear range covered and low detection limit obtained in both methods are favourable, as there are limited studies on porcine pepsin detection, and they have only employed a single detection method with a high limit of detection value and a narrow detection range. Furthermore, machine learning is used to predict various concentrations of porcine pepsin from the obtained datasets.
在全球范围内,食品中普遍存在猪胃蛋白酶。尽管宗教和纯素食社区禁止在食品中使用此类成分,以及出于医疗考虑,但在确定食品中这些成分的来源方面仍存在不确定性。食品行业的某些企业未能清楚地标记含猪胃蛋白酶的食品,这需要本研究可以提供的干预措施。在本研究中,我们报道了在开发的免疫传感器中使用新型La2O3-Fe-Ni纳米酶对猪胃蛋白酶的双模式检测。纳米酶表现出增强的过氧化物酶模拟活性,这共同促进了电化学发光信号的产生。在两种检测模式下,免疫传感器对猪胃蛋白酶的检出限都很低。机器学习的额外集成可以精确和准确地预测猪胃蛋白酶。通过对食品样品的检测,验证了该免疫传感器的实际应用,表明该传感器具有良好的回收率。本研究构建了一种新型La2O3-Fe-Ni纳米酶,用于食品样品中猪胃蛋白酶的比色-电化学发光免疫检测。在抗胃蛋白酶抗体和靶标之间形成的免疫复合物通过磁性分离,这只允许特异性免疫复合物被回收并用于检测模式,而不需要阻断剂。免疫复合物直接滴投到微滴板的电极和孔上,这绕过了耗时的洗涤步骤和纳米酶、靶标和抗体的逐层孵育;同时减少阻塞剂的噪声信号。此外,该纳米酶表现出显著的过氧化物酶模拟活性和动力学参数,超过了辣根过氧化物酶和先前发表的纳米酶文献。建立了反纳米材料的动力学参数,这是以前没有评价过的。两种方法线性范围广,检出限低,这是有利的,因为对猪胃蛋白酶检测的研究有限,只采用了一种检测方法,检出值限高,检出范围窄。此外,机器学习用于从获得的数据集中预测不同浓度的猪胃蛋白酶。
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引用次数: 0
Advances in carbon-based nanomaterials for biosensing and bioanalytical applications: from CNTs to graphene, MXenes, MOFs, and MIPs 用于生物传感和生物分析的碳基纳米材料的进展:从碳纳米管到石墨烯、MXenes、mof和mip
IF 4.9 2区 化学 Q1 CHEMISTRY, ANALYTICAL Pub Date : 2026-04-01 Epub Date: 2026-02-10 DOI: 10.1016/j.microc.2026.117315
Bharathi Natarajan , Palanisamy Kannan , Govindhan Maduraiveeran
Carbon-based nanomaterials (CNMs) have driven significant progress in various biological fields, including diagnostics, bioimaging, and therapeutic monitoring. By integrating carbon-based nanostructures with biological components, researchers have enhanced biointerface sensitivity, flexibility, and functionality, enabling precise diagnostic techniques and improving therapeutic outcomes. However, optimizing these bio-hybrid systems requires a deep understanding of the interactions between material structure, biosensing activity, and biosafety. These insights are crucial for designing nanomaterials that meet the specific needs of clinical and biomedical applications while ensuring both safety and performance. This review explores the advancements in CNMs-enabled biosensing, with a specific focus on various types, including graphene, carbon nanotubes (CNTs), graphyne, and hybrid carbon-bio systems. We examine the relationship between nanomaterial properties and biological systems, highlighting the role of these different frameworks in enhancing biosensing capabilities and therapeutic applications. Topics include efficient probe design, surface functionalization, adsorption dynamics, and optimization of carbon-bio-interfaces to enhance signal transduction and bio-recognition. In addition, we address key analytical metrics including sensitivity and specificity, while highlighting challenges such as reproducibility, in-vivo applicability, and long-term biosafety. Emerging trends and future directions in bioanalytical research are also discussed.
碳基纳米材料(CNMs)在包括诊断、生物成像和治疗监测在内的各个生物领域取得了重大进展。通过将碳基纳米结构与生物组分相结合,研究人员提高了生物界面的敏感性、灵活性和功能性,从而实现了精确的诊断技术,改善了治疗效果。然而,优化这些生物混合系统需要深入了解材料结构、生物传感活性和生物安全性之间的相互作用。这些见解对于设计满足临床和生物医学应用的特定需求,同时确保安全性和性能的纳米材料至关重要。这篇综述探讨了cnms生物传感的进展,特别关注各种类型,包括石墨烯、碳纳米管(CNTs)、石墨炔和混合碳生物系统。我们研究了纳米材料特性和生物系统之间的关系,强调了这些不同框架在增强生物传感能力和治疗应用中的作用。主题包括有效的探针设计,表面功能化,吸附动力学,优化碳-生物界面,以增强信号转导和生物识别。此外,我们还解决了包括敏感性和特异性在内的关键分析指标,同时强调了可重复性、体内适用性和长期生物安全性等挑战。讨论了生物分析研究的新趋势和未来方向。
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引用次数: 0
AI-driven energy material design and battery life improvement methods for wearable sports devices 面向可穿戴运动设备的ai驱动能源材料设计及电池寿命提升方法
IF 4.9 2区 化学 Q1 CHEMISTRY, ANALYTICAL Pub Date : 2026-04-01 Epub Date: 2026-02-06 DOI: 10.1016/j.microc.2026.117294
Dongdong Zheng , Hui Li , Hongqiao Yan
This study examines the design and endurance enhancement of energy materials for AI-driven wearable sports devices by systematically comparing the performance characteristics of lithium batteries, supercapacitors, graphene batteries, and sodium-ion batteries. An energy efficiency optimization model based on graph neural networks is proposed. Experimental results show that the model extends battery life by 45%–75% while restricting energy loss to 70 mW·h, which is nearly 50% lower than that of traditional battery management systems. Reinforcement learning algorithms further extend battery lifespan by up to 35%, albeit at a computational complexity of 10,000 FLOPS. With kinetic energy recovery efficiency at 50%, device operation time increases from 3 h to over 10 h. Energy consumption comparisons reveal that smart bands, with a standby power of 20–30 mW, can operate for more than 200 h, whereas smart sports glasses operating in GPS mode consume 90–120 mW and sustain operation for only about 30 h. By integrating material properties with energy management strategies using AI technologies, this research provides a quantitatively supported pathway for the prolonged operation of wearable devices.
本研究通过系统比较锂电池、超级电容器、石墨烯电池和钠离子电池的性能特点,探讨了人工智能驱动的可穿戴运动设备能源材料的设计和续航能力增强。提出了一种基于图神经网络的能效优化模型。实验结果表明,该模型将电池寿命延长了45%-75%,同时将能量损失限制在70 mW·h以内,比传统电池管理系统降低了近50%。强化学习算法进一步将电池寿命延长了35%,尽管计算复杂度为10,000 FLOPS。在动能回收效率达到50%的情况下,设备运行时间从3小时增加到10小时以上。能耗比较表明,待机功率为20-30兆瓦的智能腕带可以运行200小时以上,而在GPS模式下运行的智能运动眼镜则消耗90-120兆瓦,只能持续运行约30小时。本研究为可穿戴设备的长时间运行提供了定量支持途径。
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引用次数: 0
Pharmaceutical pollutant ornidazole sensing at mesoporous spinel cobalt cerium oxide and graphene nanoplatelets modified electrode in environmental water and fish samples 介孔尖晶石钴铈氧化物和石墨烯纳米片修饰电极对环境水和鱼样品中药物污染物奥硝唑的传感
IF 4.9 2区 化学 Q1 CHEMISTRY, ANALYTICAL Pub Date : 2026-04-01 Epub Date: 2026-02-13 DOI: 10.1016/j.microc.2026.117311
Viswa Muthiah , Venkataraman Dharuman
Presence of pharmaceutical pollutants greater than the permissible concentration in the environmental water poses significant health problems and affect environmental health underscoring the development of sensitive techniques to monitor. This study synthesized mesoporous spinel cobalt cerium oxide (CoCe2O4) using the simple hydrothermal method and anchored with graphene nanoplatelets through physical adsorption (CoCe2O4/Gr NP). Characterization was done using X-ray diffraction (XRD), Raman spectroscopy, Fourier transform infrared spectroscopy (FT-IR), X-ray photoelectron spectroscopy (XPS), high resolution transmission electron microscopy (HR-TEM), field-emission scanning electron microscopy (FE-SEM) and Brunauer-Emmett-Teller (BET). Studies confirmed spherical and mesoporous structure of the composite. The electrochemical study in the presence of [Fe(CN)6]3−/4- reveals the highest redox current with lower ∆Ep (77 mV) for the CoCe2O4/Gr compared to the Co3O4 (∆Ep: 180 mV) and CoCe2O4 (∆Ep: 221 mV) and Gr NP (∆Ep: 83 mV) modified electrodes due to the improved surface area and conductivity. In the presence of ODZ, the sensor showed highest and very sharp reduction peak (ipa: −22.95 μA) at the lowest overpotential −0.574 V with the sensitivity of 0.1924 μA μM−1 cm−2, limit of detection (LOD) of 0.0639 μM, limit of quantification (LOQ) of 0.2128 μM. A linear detection range from 125 nM to 1.674 mM with good reproducibility, renewability and stability was obtained. Practical application was demonstrated using pharmaceutical tablets, environmental water samples (lake, well, and tap water), fish samples, and achieved high recovery rates.
环境水中超过允许浓度的药物污染物构成严重的健康问题,并影响环境健康,强调开发敏感的监测技术。本研究采用简单水热法合成了介孔尖晶石型钴铈氧化物(CoCe2O4),并通过物理吸附(CoCe2O4/Gr NP)将其固定在石墨烯纳米片上。采用x射线衍射(XRD)、拉曼光谱、傅里叶变换红外光谱(FT-IR)、x射线光电子能谱(XPS)、高分辨率透射电子显微镜(HR-TEM)、场发射扫描电子显微镜(FE-SEM)和布鲁诺尔-埃米特-泰勒(BET)进行表征。研究证实了复合材料的球形和介孔结构。在[Fe(CN)6]3−/4-存在下的电化学研究表明,与Co3O4(∆Ep: 180 mV)、CoCe2O4(∆Ep: 221 mV)和Gr NP(∆Ep: 83 mV)修饰电极相比,CoCe2O4/Gr的氧化还原电流最高,∆Ep (77 mV)更低。在ODZ存在下,传感器在过电位最低- 0.574 V处显示出最高且极陡的还原峰(ipa: - 22.95 μA),灵敏度为0.1924 μA μM−1 cm−2,检测限(LOD)为0.0639 μM,定量限(LOQ)为0.2128 μM。在125 nM ~ 1.674 mM范围内线性检测,重现性、可重复性和稳定性好。实际应用表明,该方法可用于药物片剂、环境水样(湖泊、水井和自来水)、鱼类样品,并取得了较高的回收率。
{"title":"Pharmaceutical pollutant ornidazole sensing at mesoporous spinel cobalt cerium oxide and graphene nanoplatelets modified electrode in environmental water and fish samples","authors":"Viswa Muthiah ,&nbsp;Venkataraman Dharuman","doi":"10.1016/j.microc.2026.117311","DOIUrl":"10.1016/j.microc.2026.117311","url":null,"abstract":"<div><div>Presence of pharmaceutical pollutants greater than the permissible concentration in the environmental water poses significant health problems and affect environmental health underscoring the development of sensitive techniques to monitor. This study synthesized mesoporous spinel cobalt cerium oxide (CoCe<sub>2</sub>O<sub>4</sub>) using the simple hydrothermal method and anchored with graphene nanoplatelets through physical adsorption (CoCe<sub>2</sub>O<sub>4</sub>/Gr NP). Characterization was done using X-ray diffraction (XRD), Raman spectroscopy, Fourier transform infrared spectroscopy (FT-IR), X-ray photoelectron spectroscopy (XPS), high resolution transmission electron microscopy (HR-TEM), field-emission scanning electron microscopy (FE-SEM) and Brunauer-Emmett-Teller (BET). Studies confirmed spherical and mesoporous structure of the composite. The electrochemical study in the presence of [Fe(CN)<sub>6</sub>]<sup>3−/4-</sup> reveals the highest redox current with lower ∆E<sub>p</sub> (77 mV) for the CoCe<sub>2</sub>O<sub>4</sub>/Gr compared to the Co<sub>3</sub>O<sub>4</sub> (∆E<sub>p</sub>: 180 mV) and CoCe<sub>2</sub>O<sub>4</sub> (∆E<sub>p</sub>: 221 mV) and Gr NP (∆E<sub>p</sub>: 83 mV) modified electrodes due to the improved surface area and conductivity. In the presence of ODZ, the sensor showed highest and very sharp reduction peak (<em>i</em><sub><em>pa</em></sub>: −22.95 μA) at the lowest overpotential −0.574 V with the sensitivity of 0.1924 μA μM<sup>−1</sup> cm<sup>−2</sup>, limit of detection (LOD) of 0.0639 μM, limit of quantification (LOQ) of 0.2128 μM. A linear detection range from 125 nM to 1.674 mM with good reproducibility, renewability and stability was obtained. Practical application was demonstrated using pharmaceutical tablets, environmental water samples (lake, well, and tap water), fish samples, and achieved high recovery rates.</div></div>","PeriodicalId":391,"journal":{"name":"Microchemical Journal","volume":"223 ","pages":"Article 117311"},"PeriodicalIF":4.9,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147386244","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 biothiol-activated fluorescent probe for hemoglobin dynamic monitoring 用于血红蛋白动态监测的生物硫醇激活荧光探针
IF 4.9 2区 化学 Q1 CHEMISTRY, ANALYTICAL Pub Date : 2026-04-01 Epub Date: 2026-02-09 DOI: 10.1016/j.microc.2026.117328
Jing Zhang , Yong-Bin Liu , Hong-Kai Bian , Xin-Yu Pan , Xiang Ding , Qing Wang , Wen-Bo Liu
Abnormalities in hemoglobin (Hb) concentration function as crucial biomarkers for a variety of pathological conditions. Although several methods are available for highly sensitive detection of Hb, there is still a lack of efficient tools for dynamic monitoring of Hb in specific pathological environments. Herein, we developed a novel fluorescent probe (TDA) for biothiol-mediated dynamic monitoring of Hb. TDA exhibited responsiveness to various biothiols, and it showed a stronger responsiveness to glutathione (GSH). Moreover, while TDA itself did not demonstrate significant responsiveness to proteins and DNA, the biothiol-activated TDA (i.e., TDA-OH) displayed favorable selective fluorescence “turn-off” responsiveness to bovine hemoglobin (BHb). Both TDA and TDA-OH possessed good BHb binding capability, and common commercial drugs had minimal impact on this binding. Non-covalent interactions played a pivotal role in stabilizing the interaction between BHb and TDA/TDA-OH. As a result of this stability, even when TDA was activated by biothiol, the resulting TDA-OH could still remain stably embedded within BHb, with its fluorescence in a quenched state. When BHb was damaged, the quenched fluorescence of TDA-OH recovered, resulting in a noticeable fluorescence enhancement. This cascade response property thus endows TDA with potential for specific and dynamic monitoring of Hb in a pathological environment with overexpressed biothiol.
血红蛋白(Hb)浓度异常是多种病理条件的关键生物标志物。虽然有几种方法可用于Hb的高灵敏度检测,但仍然缺乏在特定病理环境中动态监测Hb的有效工具。在此,我们开发了一种新的荧光探针(TDA)用于生物硫醇介导的Hb动态监测。TDA对多种生物硫醇均表现出响应性,其中对谷胱甘肽(GSH)表现出较强的响应性。此外,虽然TDA本身对蛋白质和DNA没有明显的反应性,但生物硫醇活化的TDA(即TDA- oh)对牛血红蛋白(BHb)表现出良好的选择性荧光“关闭”反应性。TDA和TDA- oh均具有良好的BHb结合能力,普通市售药物对BHb结合的影响最小。非共价相互作用对BHb与TDA/TDA- oh相互作用的稳定起关键作用。由于这种稳定性,即使TDA被生物硫醇激活,得到的TDA- oh仍然可以稳定地嵌入BHb中,其荧光处于猝灭状态。当BHb受损时,TDA-OH的猝灭荧光恢复,荧光增强明显。因此,这种级联反应特性赋予TDA在生物硫醇过表达的病理环境中特异性和动态监测Hb的潜力。
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引用次数: 0
Nanostructured zinc chromate decorated on halloysite nanotubes for high-performance detection of dimetridazole in food samples 高岭土纳米管修饰纳米结构铬酸锌用于食品样品中二甲硝唑的高效检测
IF 4.9 2区 化学 Q1 CHEMISTRY, ANALYTICAL Pub Date : 2026-04-01 Epub Date: 2026-02-10 DOI: 10.1016/j.microc.2026.117291
Loganathan Vagismathi , Sea-Fue Wang
The extensive application of veterinary drugs and agrochemicals has emerged as a pressing global issue due to their persistence in the environment and long-term implications for human health and ecosystems. Dimetridazole (DZ), a nitroimidazole compound widely utilised in animal husbandry and poultry, has also drawn substantial concern due to its persistence, bioaccumulation, and toxicological implications, including mutagenic and carcinogenic effects. To meet the demand for effective monitoring strategies, this work proposes a Zinc chromate and halloysite nanotube-based nanocomposite as an electrocatalytic sensing platform for detecting DZ. The spinel ZnCr2O4, which exhibits high physicochemical stability, is integrated with HNTs, which provide a high surface area to the nanocomposite. The resulting ZnCr2O4/HNT electrode demonstrates enhanced electrochemical performance relative to pristine ZnCr2O4, attributable to accelerated charge transfer, greater exposure of active sites, and improved interfacial interactions between DZ and the nanocomposite surface. The ZnCr2O4/HNT/GCE sensor achieves a detection limit of 0.0036 μM and a linear concentration range of 0.1–736.4 μM, demonstrating excellent sensing performance for the detection of DZ. Furthermore, the as-constructed sensor exhibits excellent reproducibility and selectivity, with recoveries of 98–99% with relative standard deviation (RSD) values below 4%. The ZnCr2O4/HNT/GCE sensor is applied to real sample analysis, including milk and tomato, confirming its practical applicability for food safety and environmental monitoring.
兽药和农用化学品的广泛应用已成为一个紧迫的全球问题,因为它们在环境中的持久性和对人类健康和生态系统的长期影响。二甲硝唑(DZ)是一种广泛应用于畜牧业和家禽的硝基咪唑化合物,由于其持久性、生物蓄积性和毒理学影响,包括致突变和致癌作用,也引起了人们的极大关注。为了满足有效监测策略的需求,本工作提出了一种基于铬酸锌和高岭土纳米管的纳米复合材料作为检测DZ的电催化传感平台。具有较高物理化学稳定性的尖晶石ZnCr2O4与HNTs相结合,为纳米复合材料提供了较高的比表面积。相对于原始ZnCr2O4,所得的ZnCr2O4/HNT电极表现出更强的电化学性能,这是由于加速了电荷转移,更多的活性位点暴露,并且改善了DZ与纳米复合材料表面之间的界面相互作用。ZnCr2O4/HNT/GCE传感器检测限为0.0036 μM,线性浓度范围为0.1 ~ 736.4 μM,具有良好的DZ检测性能。此外,所构建的传感器具有良好的重现性和选择性,回收率为98-99%,相对标准偏差(RSD)值低于4%。ZnCr2O4/HNT/GCE传感器应用于牛奶、番茄等实际样品分析,验证了其在食品安全和环境监测中的实用性。
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引用次数: 0
Ratiometric dual-mode ECL–SERS biosensing of miR-21 via PER-primed CRISPR/Cas12a on CsPbBr₃@COF-LZU1@Au 在CsPbBr₃@COF-LZU1@Au上通过per引物CRISPR/Cas12a对miR-21进行比例双模ECL-SERS生物传感
IF 4.9 2区 化学 Q1 CHEMISTRY, ANALYTICAL Pub Date : 2026-04-01 Epub Date: 2026-02-11 DOI: 10.1016/j.microc.2026.117278
Zhengfang Liang , Jin Chen , Guoli Zuo , Junhong Li , Jihua Wei , Yuanxun Gong , Haozhen Ren , Qianli Tang , Kai Zhang , Xianjiu Liao
We report a single-electrode, dual-mode biosensor that co-integrates anodic electrochemiluminescence (ECL) and surface-enhanced Raman scattering (SERS) on CsPbBr₃@COF-LZU1@Au nano-hybrids. The perovskite core provides bright, water-stable ECL under tri-n-propylamine (TPrA), the ultrathin COF shell offers porous confinement and chemical anchoring, and peripheral Au nanodots create electromagnetic hot spots and robust AuS linkages. A ferrocene-tagged hairpin (Fc-HP) positions Fc inside the sub-nanometer to few-nanometer (∼0.5–3 nm) Au–COF–perovskite nanogap to impose a deep OFF baseline by distance-dependent quenching. Target recognition is amplified upstream by primer-exchange reaction (PER), which primes CRISPR/Cas12a for collateral trans-cleavage of surface DNA, withdrawing/distalizing Fc to restore ECL and attenuate the Fc SERS signature in a synchronized, target-dependent manner. Acquisition is ordered SERS-first/ECL-second to avoid interfacial perturbation. Under optimized conditions (PER 80 min, Cas12a 60 nM, on-electrode cleavage 45 min, TPrA 70 mM), synthetic miR-21 yields nine-decade log-linear behavior from 1 aM to 1 nM: normalized ECL increases with log10C, SERS(Fc) decreases with log10C, and the ratiometric index R = IECL/ISERS(Fc) is also linear across the same range. IUPAC LODs are 1.71 aM (ECL), 2.14 aM (SERS(Fc)), and 1.51 aM (ratiometric). The platform shows high selectivity against noncognate/mismatched sequences, excellent reproducibility (inter-electrode RSD ≈ 3%), and practical stability (≈92–96% signal retention over 7 days at 4 °C). In real matrices, endogenous miR-21 in total RNA follows the expected trend MCF-7 > HeLa > HEK293, with accurate spike-recovery using matrix-matched calibration. The modular PER→Cas12a recognition and the co-engineered nanogap transducer enable sensitive, cross-validated quantification and are readily adaptable to other microRNAs and nucleic-acid biomarkers.
我们报道了一种单电极,双模式生物传感器,它在CsPbBr₃@COF-LZU1@Au纳米杂化材料上共集成了阳极电化学发光(ECL)和表面增强拉曼散射(SERS)。钙钛矿核心在三正丙胺(TPrA)下提供明亮、水稳定的ECL,超薄COF外壳提供多孔约束和化学锚定,外围的Au纳米点产生电磁热点和强大的Au连接。二茂铁标记的发夹(Fc- hp)将Fc定位在亚纳米到几纳米(~ 0.5-3纳米)au - cof -钙钛矿纳米间隙内,通过距离依赖猝灭来施加深OFF基线。目标识别通过上游的引物交换反应(PER)放大,该反应引物CRISPR/Cas12a进行表面DNA的侧链反切,以同步的、靶依赖的方式提取/远端Fc以恢复ECL并减弱Fc SERS特征。采集顺序为SERS-first/ECL-second,以避免界面扰动。在优化条件下(PER 80分钟,Cas12a 60 nM,电极上裂解45分钟,TPrA 70 mM),合成miR-21从1 aM到1 nM产生90年的对数线性行为:标准化ECL随log10C增加,SERS(Fc)随log10C降低,比值指数R = IECL/ISERS(Fc)在同一范围内也是线性的。IUPAC负载分别为1.71 aM (ECL)、2.14 aM (SERS(Fc))和1.51 aM(比率)。该平台对非同源/错配序列具有高选择性,重复性好(电极间RSD≈3%),稳定性好(4°C下7天信号保留率≈92-96%)。在真实的基质中,总RNA中的内源性miR-21遵循预期趋势MCF-7 >; HeLa > HEK293,使用基质匹配校准具有准确的峰值恢复。模块化的PER→Cas12a识别和协同设计的纳米缺口传感器实现了敏感的、交叉验证的定量,并且很容易适用于其他microrna和核酸生物标志物。
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引用次数: 0
Flower-like Cu/Ag nanozyme as oxidase-mimic for the colorimetric detection of hydroquinone 花状铜/银纳米酶作为氧化酶模拟物比色法检测对苯二酚
IF 4.9 2区 化学 Q1 CHEMISTRY, ANALYTICAL Pub Date : 2026-04-01 Epub Date: 2026-02-14 DOI: 10.1016/j.microc.2026.117382
Yi Liu , Xingxing Ouyang , Hongfen Yang , Dan Yang , Jia Ge , Yu Liu , Ren Cai
Herein, a novel colorimetric system based on bimetallic copper‑silver (Cu/Ag) nanozymes has developed for hydroquinone determination. The bimetallic Cu/Ag nanozymes possess oxidase-mimic activity and could rapidly oxidize TMB to blue oxTMB. When HQ was added to the sensing system, blue oxTMB was reduced to colorless TMB, causing the absorbance to decrease. The proposed assay exhibited excellent performance for hydroquinone assay with a detection limit of 85 nM. Moreover, this strategy can be used to hydroquinone assay in spiked tap and river water samples with favorable recoveries of 97.4%–106.5%.
本文建立了一种基于双金属铜银(Cu/Ag)纳米酶的新型比色系统,用于对苯二酚的测定。双金属Cu/Ag纳米酶具有类似氧化酶的活性,能将TMB快速氧化为蓝氧TMB。当感应系统中加入HQ时,蓝色的TMB被还原为无色的TMB,导致吸光度降低。该方法具有良好的对苯二酚检测性能,检测限为85 nM。该方法可用于自来水和河水中对苯二酚的加标分析,加标回收率为97.4% ~ 106.5%。
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引用次数: 0
Chemometric monitoring of critical parameters in rice wine fermentation using near-infrared spectroscopy with ultrasound-assisted S. cerevisiae cultivation 超声辅助酿酒酵母培养的近红外光谱法对米酒发酵关键参数的化学计量监测
IF 4.9 2区 化学 Q1 CHEMISTRY, ANALYTICAL Pub Date : 2026-04-01 Epub Date: 2026-02-15 DOI: 10.1016/j.microc.2026.117397
Jing Hao , Mengyuan Yang , Benjamin Kumah Mintah , Chunhua Dai , Rong Zhang , Zhaoli Zhang , Haile Ma , Ronghai He
This study implemented real-time monitoring of critical process parameters in rice wine fermentation by integrating near-infrared (NIR) spectroscopy with chemometrics. The fermentation process was enhanced through fixed-frequency ultrasound-assisted cultivation of S. cerevisiae, an approach that extends beyond conventional NIR monitoring by incorporating a defined physical pretreatment to actively modify the fermentation system. The conditions for ultrasound-assisted cultivation of S. cerevisiae were logarithmic metaphase, 28 kHz, 20 min and 45 W/L. After screening the feature wavelengths by using the competitive adaptive reweighted sampling (CARS), the Rc, RMSEC, Rp and RMSEP of the correction and prediction models obtained on the basis of the synergy interval partial least square method were as follows: alcohol strength, 0.974, 0.42 and 0.959, 0.51; total sugar content, 0.959, 10.23 and 0.946, 11.55; total acid content, 0.948, 0.25 and 0.939, 0.28; and pH value, 0.960, 0.13 and 0.942, 0.33. The results indicated that the established models are accurate and stable, validating their applicability for real-time bioprocess monitoring in rice wine fermentation with ultrasound-assisted cultivation of S. cerevisiae. These findings highlight the potential of NIR spectroscopy as a rapid, non-destructive tool for optimizing fermentation control in biotechnology applications.
采用近红外光谱与化学计量学相结合的方法,对黄酒发酵过程中的关键工艺参数进行了实时监测。通过固定频率的超声辅助培养酿酒酵母,发酵过程得到了加强,这种方法超越了传统的近红外监测,通过结合定义的物理预处理来积极修改发酵系统。超声辅助培养酿酒酵母的条件为对数中期,28 kHz, 20 min, 45 W/L。采用竞争自适应重加权采样(CARS)筛选特征波长后,基于协同区间偏最小二乘法得到的校正和预测模型的Rc、RMSEC、Rp和RMSEP分别为:酒精浓度0.974、0.42和0.959、0.51;总糖含量分别为0.959、10.23和0.946、11.55;总酸含量分别为0.948、0.25和0.939、0.28;pH值分别为0.960、0.13和0.942、0.33。结果表明,所建立的模型准确、稳定,可用于超声辅助培养酿酒酵母发酵米酒过程的实时监测。这些发现突出了近红外光谱作为生物技术应用中优化发酵控制的快速、非破坏性工具的潜力。
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引用次数: 0
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Microchemical Journal
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