Nixon Evangeline Jafneel, Sakthivel Rajalakshmi, ALOthman Zeid Abdullah, Ganesh Pattan-Siddappa, Chung Ren-Jei
Department of Chemical Engineering and Biotechnology, National Taipei University of Technology (Taipei Tech), Taipei, Taiwan.
Chemistry Department, College of Science, King Saud University, Saudi Arabia.
Food Chem. 2023 May 30;409:135324. doi: 10.1016/j.foodchem.2022.135324. Epub 2022 Dec 24.
Contemporary food marketing is ruined by flavor enhancers rather than emphasizing the nutritional value of food. Vanillin is an overexploited flavor enhancer added to food items, thereby necessitating its detection. In this study, an electrochemical sensor was designed using a modified electrode made up of LaNiO functionalized carbon nanofiber (f-CNF) to effectively detect vanillin in food samples. To confirm the successful formation of LaNiO/f-CNF, structural and morphological studies were performed using X-ray diffraction, Raman spectroscopy, scanning electron microscopy, and X-ray photoelectron spectroscopy. Further electrochemical analysis was performed using cyclic voltammetry and differential pulse voltammetry techniques, which resulted in high sensitivity (0.2899 µA·μM·cm) and low limit of detection (LOD) (6 nM). This modified electrode material was tested in food samples, which showed an excellent response with recovery percentage and is a promising electrocatalyst for vanillin detection.
当代食品营销被风味增强剂所破坏，而不是强调食品的营养价值。香草醛是一种过度使用的添加到食品中的风味增强剂，因此有必要对其进行检测。在本研究中，设计了一种电化学传感器，使用由镧镍氧化物功能化碳纳米纤维（f-CNF）制成的修饰电极来有效检测食品样品中的香草醛。为了确认镧镍氧化物/f-CNF的成功形成，使用X射线衍射、拉曼光谱、扫描电子显微镜和X射线光电子能谱进行了结构和形态研究。进一步使用循环伏安法和差分脉冲伏安法技术进行电化学分析，结果显示出高灵敏度（0.2899 μA·μM·cm）和低检测限（LOD）（6 nM）。这种修饰电极材料在食品样品中进行了测试，显示出优异的回收率响应，是一种用于香草醛检测的有前景的电催化剂。
