二维纳米材料基电化学传感器在检测谷物及其制品中赭曲霉毒素A的应用进展

Application progress of electrochemical sensors based on two-dimensional nanomaterials for the detection of ochratoxin A in grains and their products

中文关键词:  石墨烯  二硫化钼  黑磷  二维纳米材料  电化学传感器  赭曲霉毒素A

英文关键词:graphene  molybdenum disulfide  black phosphorus  two-dimensional nanomaterial  electrochemical sensor  ochratoxin A

中文摘要:

      赭曲霉毒素A (ochratoxin A, OTA)是一种丝状真菌毒素, 具有致畸、致癌、致突变等危害。它容易在谷物中存在, 并通过食物链对人体造成危害。因此, 开发快速、灵敏的OTA检测技术对于食品安全控制具有重要意义。电化学传感器具有灵敏度高、响应速度快和稳定性好等优点, 因此在OTA的检测中得到广泛应用。此外, 二维纳米材料具有较大的比表面积、良好的导电性和易于修饰等优点, 可用于构建性能优异的电化学传感器。因此, 本文综述了石墨烯(graphene, GR)、二硫化钼(molybdenum disulfide, MoS2)、黑磷(black phosphorus, BP)等二维纳米材料的特性、制备方法及其区别, 重点阐述了二维纳米材料基电化学传感器在检测谷物及其制品中OTA的优势, 以及复合材料中二维纳米材料的作用, 为进一步拓展二维纳米材料基电化学传感器在谷物及其制品中OTA检测应用方面提供新思路。

英文摘要:

      Ochratoxin A (OTA) is a mycotoxin produced by filamentous fungi that poses hazards such as teratogenicity, carcinogenicity and mutagenicity. It tends to be present in grains and can harm the human body through the food chain. Consequently, the development of a rapid and sensitive detection technique for OTA is of great significance for food safety control. Electrochemical sensors are widely used for the detection of OTA due to their advantages of high sensitivity, fast response time and good stability. In addition, two-dimensional nanomaterials have a large specific surface area, good conductivity and ease of modification, making them suitable for the construction of high-performance electrochemical sensors. Therefore, this review summarized the characteristics, preparation methods and differences of two-dimensional nanomaterials such as graphene (GR), molybdenum disulfide (MoS2) and black phosphorus (BP). It focused on the recent advantages of two-dimensional nanomaterial-based electrochemical sensors in detecting OTA in grains and their products, and the role of two-dimensional nanomaterials in composites, in order to provide new ideas for further expanding the application of two-dimensional nanomaterial-based electrochemical sensors in detecting OTA in grains and their products.