相关实验视频

Updated: Jul 27, 2026

A Filter-based Surface Enhanced Raman Spectroscopic Assay for Rapid Detection of Chemical Contaminants

A Filter-based Surface Enhanced Raman Spectroscopic Assay for Rapid Detection of Chemical Contaminants

Published on: February 19, 2016

基于局部表面等离子体共振的纳米传感器,用于快速检测食品样本中的草甘

Ariany Soares Côco¹, Fabiana Vasconcelos Campos¹, Camilo Arturo Rodríguez Díaz²

¹Functional Nanomaterials Laboratory, Morphology Department, Federal University of Espírito Santo (UFES), Av Marechal Campos 1468, Vitória 29040-090, ES, Brazil.

|May 26, 2023

概括

这项研究介绍了一种金纳米粒子生物传感器,用于检测食品中的除草剂草甘. 抗体功能化的传感器显示出在各种食品样本中准确且具有成本效益的草甘检测有希望.

科学领域:

纳米技术纳米技术
分析化学分析化学
食品安全食品安全

背景情况:

草甘是一种广泛使用的除草剂,具有潜在的健康和环境问题.
准确检测食品中的草甘对于消费者安全和监管合规性至关重要.
目前的检测方法可能昂贵且耗时.

研究的目的:

开发一种新的生物传感器,用于检测食品样本中的草甘.
为了利用金纳米粒子 (AuNPs) 的局部表面等离子体共振 (LSPR) 来检测草甘.
为了比较AuNP生物传感器的两个功能化方法的有效性.

主要方法:

使用酸盐减少方法合成金纳米颗粒 (AuNPs).
用cysteamine或anti-glyphosate抗体对AuNPs进行功能化.
使用各种光谱和显微技术 (UV-vis,XRD,TEM,FTIR,Raman,DLS,Zeta潜力) 进行AuNP和功能化纳米粒子的表征.
在溶液和食品样本 (咖啡) 中检测草甘.

主要成果:

AuNP已经成功合成和表征.
囊胺和抗草甘功能化的AuNP都检测到草甘.
囊胺功能化的AuNP在高度的草甘酸盐中表现出聚合问题.
反草甘功能化的AuNP在广泛的度范围内表现稳定.
在非有机咖啡和的有机咖啡样本中成功检测出草甘.

结论:

基于AuNP的生物传感器显示出在食品中检测草甘的巨大潜力.
抗草甘抗体功能化提供了一种特定且稳定的检测方法.
这种低成本的,特定的生物传感器为食品中现有的草甘检测技术提供了可行的替代方案.

关键词:

抗草甘抗体的抗体生物感应生物感应囊胺是一种囊胺.草甘是一种草甘.金纳米颗粒的金子纳米颗粒局部化的表面等离子体共振.

更多相关视频

Foodborne Pathogen Screening Using Magneto-fluorescent Nanosensor: Rapid Detection of E. Coli O157:H7

Foodborne Pathogen Screening Using Magneto-fluorescent Nanosensor: Rapid Detection of E. Coli O157:H7

Published on: September 17, 2017

Author Spotlight: Development and Application of SERS Flexible Substrates Using Synthesized AgNPs

Author Spotlight: Development and Application of SERS Flexible Substrates Using Synthesized AgNPs

Published on: November 17, 2023

相关概念视频

Microbial Biosensors

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...

Rapid Identification of Pathogens

Rapid Identification of Pathogens

MALDI-TOF MS has transformed clinical microbiology by offering a rapid and reliable method for pathogen identification. The traditional approach to microbial identification typically involves time-consuming culture techniques and biochemical tests, which can delay the initiation of appropriate antimicrobial therapy. MALDI-TOF MS avoids these delays by using characteristic ribosomal protein mass patterns of microbial cells, enabling accurate species-level identification within minutes.Principle...