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Microbial Biosensors

Microbial biosensors are analytical devices that utilize living microbes to detect specific substances through measurable signals. These devices consist of two main components: biosensing organisms and signal-transducing elements. Biosensing organisms, such as Escherichia coli or Saccharomyces cerevisiae, are typically housed in multiwell plates connected to transducers, enabling rapid, real-time detection of target analytes.Signal Generation MechanismWhen a target analyte—such as...

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使用基于NiO纳米结构的层次生物传感器进行高性能尿酸检测.

Rafiq Ahmad1, Aisha Akhtar2, Vandana Nagal3

  • 1New-Senior Oriented Smart Health Care Education Center, Pukyong National University, Busan 48513, Republic of Korea. rahmad5@pknu.ac.kr.

Journal of materials chemistry. B
|January 6, 2026
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概括
此摘要是机器生成的。

使用层次的氧化 (NiO) 纳米结构和尿酶的新型电化学生物传感器提供了对尿酸 (UA) 的敏感和选择性检测. 这种基于NiO的生物传感器由于其高性能和稳定性,对临床诊断非常有希望.

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科学领域:

  • 纳米材料工程 纳米材料工程
  • 生物传感技术的技术
  • 电化学 电化学 电化学

背景情况:

  • 生物传感器对于检测尿酸 (UA) 等生物标志物至关重要.
  • 层次纳米结构为生物传感应用提供了增强的表面积和催化活性.
  • 酶与纳米材料的结合提高了生物传感器的灵敏度和选择性.

研究的目的:

  • 开发一种高度敏感和选择性的电化学生物传感器,用于尿酸 (UA) 检测.
  • 为了提高生物传感性能,利用与尿酶结合的层次性NiO纳米结构.
  • 评估生物传感器在临床诊断应用中的潜力.

主要方法:

  • 通过水热方法合成层次的NiO纳米结构.
  • 在印石墨电极 (SPGE) 上构建生物传感器,使用NiO,uricase和Nafion (Nf).
  • 使用循环电量计 (CV) 的电化学表征和在人体血清和人造唾液中的性能评估.

主要成果:

  • 该SPGE/NiO/uricase/Nf生物传感器在广泛范围 (25-900μM) 上显示了快速的UA检测.
  • 达到高灵敏度 (423.5 ± 2.6 μA mM−1 cm−2) 和一个低的检测极限 (∼1.45 ± 0.12 μM).
  • 展现出出色的可复制性 (<6.5% RSD),可重复使用性 (超过18天的约90.4%保留) 和抗干扰能力.

结论:

  • 层次的NiO纳米结构和尿酶的协同效应增强了电子转移和选择性电催化活性,用于UA检测.
  • 开发的生物传感器显示了UA准确可靠的临床诊断的巨大潜力.
  • 这项研究强调了将纳米材料工程与酶结合用于先进生物传感平台的有效性.