Optics and Microfluidics Instrumentation Lab, Department of Instrumentation and Applied Physics, Indian Institute of Science, Bangalore 560012, India.
Wolfson Nanomaterials & Devices Laboratory, School of Engineering, Computing and Mathematics, Plymouth University, Devon PL4 8AA, UK.
Food Chem. 2021 Sep 1;355:129547. doi: 10.1016/j.foodchem.2021.129547. Epub 2021 Mar 13.
The detection of food adulterants and toxicants can prevent a large variety of adverse health conditions for the global population. Through the process of rapid sensing enabled by deploying novel and robust sensors, the food industry can assist in the detection of adulterants and toxicants at trace levels. Sensor platforms which exploit graphene-based nanomaterials satisfy this requirement due to outstanding electrical, optical and thermal properties. The materials' facile conjugation with linkers and biomolecules along with the option for further enhancement using nanoparticles results in highly sensitive and selective sensing characteristics. This review highlights novel applications of graphene derivatives for detection covering three important approaches; optical, electrical (field-effect) and electrochemical sensing. Suitable graphene-based sensors for portable devices as point-of-need platforms are also presented. The future scope of these sensors is discussed to showcase how these emerging techniques will disrupt the food detection sector for years to come.
检测食品掺杂物和有毒物质可以预防全球人口的多种不良健康状况。通过部署新型和强大传感器实现的快速感应过程，食品行业可以协助检测痕量掺杂物和有毒物质。由于具有出色的电学、光学和热学性能，基于石墨烯的纳米材料的传感器平台满足了这一要求。这些材料易于与连接子和生物分子结合，并且可以使用纳米粒子进一步增强，从而具有高灵敏度和选择性的传感特性。本综述重点介绍了石墨烯衍生物在涵盖三种重要方法的检测方面的新应用：光学、电学（场效应）和电化学传感。还介绍了适用于便携式设备作为即时检测平台的基于石墨烯的传感器。讨论了这些传感器的未来发展前景，以展示这些新兴技术将在未来几年如何颠覆食品检测行业。
