一个基于笔引线和透明纸的DIY电化学电池:用于酶定组胺胺的酶定
Ricarda Torre1, Estefania Costa-Rama2, Henri P A Nouws1
1REQUIMTE/LAQV, Instituto Superior de Engenharia Do Porto, Instituto Politécnico Do Porto, Rua Dr. António Bernardino de Almeida 431, 4249-015, Porto, Portugal.
Talanta
|August 3, 2023
概括
研究人员开发了一种低成本的电化学生物传感器,使用笔线来检测组胺. 这种新型装置提供了一种稳定而敏感的方法,用于在鱼样中量化组胺.
科学领域:
- 电化学 电化学 电化学
- 生物传感器是一种生物传感器.
- 分析化学 分析化学
背景情况:
- 开发高效的分析方法对于满足全球需求至关重要.
- 电化学电池为敏感和选择性分析提供了一个平台.
- 鉴于其监管地位,胺胺量的量化很重要.
研究的目的:
- 为电分析应用构建一个低成本,易于使用的电化学电池.
- 开发一个安培度生物传感器用于基因组胺量化.
- 用现实世界样本验证生物传感器的性能.
主要方法:
- 使用笔线作为电极和透明板作为基础的电化学电池的构造.
- 开发一种使用二胺氧化酶作为生物识别元件和六亚诺酸 (hexacyanoferrate) 作为介质的安培度生物传感器.
- 在+0.5V的时光度计信号记录100秒.
主要成果:
- 建立了基因组胺度 (5.035毫克L-1) 和分析信号之间的线性关系.
- 实现了低检测极限 (1.0 mg L-1).
- 在鱼样 (沙丁鱼和金枪鱼) 中,获得了高恢复率 (102110%) 的组胺.
- 生物传感器表现出极好的稳定性,在15天后保留了95%的信号.
结论:
- 成功开发了一种具有成本效益和用户友好的电化学生物传感器,用于测定组胺素.
- 开发的生物传感器显示出在食品安全应用中对组胺素进行常规分析的巨大潜力.
- 传感器的稳定性和准确性使其成为传统方法的可行替代方案.
更多相关视频
10:01Protein Film Infrared Electrochemistry Demonstrated for Study of H2 Oxidation by a [NiFe] Hydrogenase
Published on: December 4, 2017
12.3K
09:15Iridium Oxide-reduced Graphene Oxide Nanohybrid Thin Film Modified Screen-printed Electrodes as Disposable Electrochemical Paper Microfluidic pH Sensors
Published on: November 22, 2016
10.6K
相关概念视频
Concentration Cells
23.0K
A concentration cell is a type of a voltaic cell constructed by connecting two almost identical half-cells, both based on the same half-reaction and using the same electrode, differing only in the concentration of one redox species. A concentration cell's potential, therefore, is determined only by the concentration difference of the particular redox species.
Consider the following voltaic cell:
Consider the following voltaic cell:
23.0K
Amperometry: Overview
607
Amperometry is a technique commonly used to measure the concentration of specific analytes in a solution by monitoring the electric current generated during an electrochemical reaction. It involves applying a constant potential between a working electrode and a reference electrode to measure the resulting current, which is proportional to the concentration of the analyte. The Clark oxygen electrode operates based on this principle of amperometry. It consists of a cathode and an anode enclosed...
607
Enzyme-Linked Immunosorbent Assay
13.6K
In 1971, Peter Perlman and Eva Engvall developed an Enzyme-linked immunosorbent assay (ELISA or EIA). ELISA differs from western blot in that the assays are conducted in microtiter plates or in vivo rather than on an absorbent membrane.
There are many different types of ELISAs, but they all involve an antibody molecule whose constant region binds an enzyme, leaving the variable region free to bind its specific antigen. Enzyme-substrate reaction allows the antigen to be visualized or...
There are many different types of ELISAs, but they all involve an antibody molecule whose constant region binds an enzyme, leaving the variable region free to bind its specific antigen. Enzyme-substrate reaction allows the antigen to be visualized or...
13.6K
