Key Laboratory of Environmentally Friendly Chemistry and Applications of Ministry of Education, Xiangtan University, Xiangtan 411105, People's Republic of China.
Key Laboratory of Environmentally Friendly Chemistry and Applications of Ministry of Education, Xiangtan University, Xiangtan 411105, People's Republic of China; Hunan Institute of Advanced Sensing and Information Technology, Xiangtan University, Xiangtan 411105, People's Republic of China.
Food Chem. 2023 Dec 15;429:136900. doi: 10.1016/j.foodchem.2023.136900. Epub 2023 Jul 17.
Gallic acid is widely used as an antioxidant in food because of its good antioxidant function, but excessive intake induces side effects in humans, so it is essential to devise a highly responsive technique for detecting gallic acid. In this work, we synthesized ZIF-67@FePc by the one-pot method. The synthesized material is more stable at high temperatures compared to ZIF-67 and maintains its original morphology during pyrolysis, when iron was introduced as a second metal active site during the synthesis process. Subsequently, Co/FeO@NC-800 was employed to fabricate a GA sensor on a GCE. The developed sensor exhibited remarkable sensitivity towards GA, featuring a low LOD of 1.30 nM and a linear range spanning from 5 to 4500 nM. The electrochemical sensors we have prepared also showed good selectivity, stability, and reproducibility. It has been successfully employed for detecting GA in actual samples such as apples, grapes, tomatoes, and red wine.
没食子酸因其良好的抗氧化功能而被广泛用作食品抗氧化剂，但过量摄入会对人体产生副作用，因此开发一种高响应性的检测没食子酸的技术至关重要。在这项工作中，我们通过一锅法合成了 ZIF-67@FePc。与 ZIF-67 相比，合成材料在高温下更稳定，并且在热解过程中保持其原始形态，因为在合成过程中引入铁作为第二金属活性位。随后，采用 Co/FeO@NC-800 在 GCE 上制备 GA 传感器。所开发的传感器对 GA 具有显著的灵敏度，其检测限低至 1.30 nM，线性范围从 5 到 4500 nM。我们制备的电化学传感器还表现出良好的选择性、稳定性和重现性。该传感器已成功用于检测实际样品中的 GA，如苹果、葡萄、西红柿和红酒。
