The Key Laboratory of Industrial Biotechnology, Ministry of Education, Jiangnan University, Wuxi 214122, PR China; National Engineering Research Center for Cereal Fermentation and Food Biomanufacturing, Jiangnan University, Wuxi 214122, PR China; Jiangsu Provincial Research Center for Bioactive Product Processing Technology, Jiangnan University, Wuxi 214122, PR China; School of Biotechnology, Jiangnan University, Wuxi 214122, PR China.
College of Food Science, Southwest University, Chongqing 400715, PR China.
Food Chem. 2023 Feb 15;402:134197. doi: 10.1016/j.foodchem.2022.134197. Epub 2022 Sep 12.
Carbendazim (CBZ) is beneficial to fruit and vegetable cultivation, but its residue will cause fruit and vegetable juice pollution. In this work, an electrochemical sensor based on carbon nanohorns@reduced graphene oxide coated by gold platinum core-shell nanoparticles (Au@Pt/CNHs@RGO/GCE) was prepared for CBZ detection. The results showed that the assembly of CNHs and RGO assisted by ultrasound improved the electron transfer ability and electrochemical active surface area of CNHs@RGO. Moreover, the coating of Au@Pt nanoparticles further enhanced the sensitivity of the sensor. With the synergistic effect of the three materials, the sensor had a wider linear range (0.05 μmol/L-50 μmol/L), a lower limit of detection (1.64 nmol/L), and satisfactory recovery rates (90.60 % ∼ 97.60 %, carrot juice; 94.00-114.43 %, orange juice). Additionally, the sensor presented good anti-interference and repeatability. This work provides a simple, rapid, economical, sensitive, and accurate sensor for CBZ quantification in fruit and vegetable juice.
多菌灵（CBZ）有利于水果和蔬菜的种植，但它的残留会导致水果和蔬菜汁受到污染。在这项工作中，我们制备了一种基于碳纳米角@还原氧化石墨烯负载金铂核壳纳米粒子（Au@Pt/CNHs@RGO/GCE）的电化学传感器，用于检测 CBZ。结果表明，超声辅助的碳纳米角和 RGO 的组装提高了 CNHs@RGO 的电子传递能力和电化学活性表面积。此外，Au@Pt 纳米粒子的涂层进一步提高了传感器的灵敏度。由于三种材料的协同作用，该传感器具有更宽的线性范围（0.05 μmol/L-50 μmol/L）、更低的检测限（1.64 nmol/L）和令人满意的回收率（90.60%-97.60%，胡萝卜汁；94.00-114.43%，橙汁）。此外，该传感器具有良好的抗干扰性和重现性。这项工作为水果和蔬菜汁中 CBZ 的定量检测提供了一种简单、快速、经济、灵敏、准确的传感器。
