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相关概念视频

Inductively Coupled Plasma Atomic Emission Spectroscopy: Instrumentation01:26

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Inductively coupled plasma (ICP) is the common plasma source used in atomic emission spectroscopy (AES), a technique that detects and analyzes various elements in a sample. This method is often called inductively coupled plasma atomic emission spectroscopy (ICP-AES).
There are three main types of inductively coupled plasma atomic emission spectroscopy  (ICP-AES) instruments: sequential, simultaneous multichannel, and Fourier transform instruments, with the latter being less commonly used....
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Insensitive Nuclei Enhanced by Polarization Transfer (INEPT) is an advanced Nuclear Magnetic Resonance (NMR) technique specifically designed to detect and enhance the signals of low-abundance nuclei, such as carbon-13 and nitrogen-15, in small molecules. The fundamental principle behind INEPT is the transfer of polarization from a more abundant and highly polarizable nucleus, typically hydrogen-1, to the low-abundance nucleus of interest. This process effectively boosts the NMR signal of the...
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基于Sn/AuNP的高性能光谱圆测量传感器用于帕图林.

Zafer Üstündağ1, Sinem Tunçer Çağlayan2, Mustafa Oguzhan Caglayan3

  • 1Kütahya Dumlupınar University, Faculty of Arts and Science, Department of Chemistry, Kutahya, Türkiye.

Analytical biochemistry
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概括

一种新的无标签光谱圆测量感应传感器提供高度灵敏的帕图林检测. 这种方法实现了10 pg/mL以下的极限,用于在食品样本中准确分析真菌毒素.

关键词:
食品安全生物传感器没有标签的口味传感器.帕图林检测检测器自组装的单层单层.在Sn基板上.谱学圆测量法 谱学圆测量法 谱学圆测量法

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科学领域:

  • 生物感应是一种生物感应.
  • 纳米技术纳米技术
  • 分析化学 分析化学

背景情况:

  • 帕图林 (PAT) 是一种在食物中发现的有害的真菌毒素.
  • 准确而敏感的PAT检测方法对于食品安全至关重要.
  • 现有的方法通常需要复杂的样本准备或标签.

研究的目的:

  • 开发一种无标签的光谱圆测量 (SE) 适应传感器,用于超敏感的帕图林检测.
  • 在灵敏度,动态范围和准确度方面调查apt传感器的性能.
  • 为了验证适应传感器用于现实世界样本分析,例如果汁.

主要方法:

  • (Sn) 基板与自组装单层通过电化学接种的制造.
  • 用金纳米颗粒进行修改,并对抗PAT的aptamer进行固定.
  • 通过监测相位变化,使用无标签的光谱圆测量检测帕图林.
  • 使用循环电压测量和X射线光电谱学的表征.

主要成果:

  • 在广泛的度范围内 (0.01-1000 ng/mL) 实现了对帕图林检测的线性反应.
  • 经过证明的超敏感检测极限低至9.5 pg/mL.
  • 在缓冲和刺果汁样品中表现出高精度 (%RSD <1.1%) 和准确性 (%RE在±5%以内).
  • 结合动力学遵循伪二阶模型,表明有效的表面相互作用.

结论:

  • 开发的无标签的SE口味传感器提供了一个敏感和可靠的平台来检测帕图林.
  • 该方法需要最小的样本准备和没有外部标签,为例行分析提供了优势.
  • 这种方法有望在食品工业中进行快速和准确的真菌毒素查.