Advanced Catalysis and Green Manufacturing Collaborative Innovation Center, School of Food Science and Technology, Changzhou University, Changzhou 213164, China.
School of Chemistry and Material Engineering, Changzhou Vocational Institute of Engineering, Changzhou 213164, China.
Food Chem. 2019 Jul 30;287:375-381. doi: 10.1016/j.foodchem.2019.02.108. Epub 2019 Mar 2.
In this study, a sensitive and selective electrochemical sensing platform for the detection of Sudan I was developed with CuO nanoparticles-decorated 3D N-doped porous carbon (CuO/3DNPC). 3D N-doped porous carbon (3DNPC) was first prepared by calcining the precursors of 3D integrated polysaccharides, and then it was decorated with CuO nanoparticles by hydrothermal method. The CuO/3DNPC modified electrode showed high sensitivity and wide linear range for the detection of Sudan I due to the excellent electrocatalytic activity of CuO and the accelerated electron transfer by 3DNPC. In addition, the proposed CuO/3DNPC also exhibited high selectivity, high reproducibility and stability in the detection of Sudan I. Finally, the CuO/3DNPC based Sudan I sensor was applied in the detection of Sudan I in ketchup and chilli sauces, and the results demonstrated the potential of the developed CuO/3DNPC as a promising electrode material for accurate assay of Sudan I in food samples.
在这项研究中，我们开发了一种基于氧化铜纳米粒子修饰的三维 N 掺杂多孔碳（CuO/3DNPC）的灵敏、选择性电化学传感平台，用于检测苏丹红 I。首先通过煅烧三维集成多糖的前体来制备三维 N 掺杂多孔碳（3DNPC），然后通过水热法将氧化铜纳米粒子修饰在 3DNPC 上。由于氧化铜的优异电催化活性和 3DNPC 加速的电子转移，CuO/3DNPC 修饰电极在检测苏丹红 I 时表现出高灵敏度和宽线性范围。此外，在检测苏丹红 I 时，所提出的 CuO/3DNPC 还表现出高选择性、高重现性和稳定性。最后，基于 CuO/3DNPC 的苏丹红 I 传感器被应用于番茄酱和辣椒酱中苏丹红 I 的检测，结果表明，所开发的 CuO/3DNPC 作为一种有前途的电极材料，可用于食品样品中苏丹红 I 的准确测定。
