磁性分子印迹聚合物作为荧光传感器用于辣椒粉中苏丹红 I 的选择性检测。
Magnetic molecularly imprinted polymers as a fluorescent sensor for selective detection of Sudan I in chili powder.
机构信息
College of Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130012, China.
Zhengzhou Institute of Biomedical Engineering and Technology, Zhengzhou, Henan 450001, China.
出版信息
Anal Methods. 2023 Aug 3;15(30):3717-3726. doi: 10.1039/d3ay00591g.
In this manuscript, a novel strategy to design and prepare magnetic molecularly imprinted polymers (MMIPs) is proposed. Based on the synthesized MMIPs, a fluorescent sensor for low-cost and fast detection of Sudan I was established. Under the optimal conditions, the fluorescence intensity of MMIPs decreased linearly with the concentration of Sudan I in the range of 1-40 μM, and the detection limit was 0.38 μM. The present fluorescent sensor demonstrated satisfactory performance for the quantification of Sudan I in chili powder, covering a concentration range of 49.66-993.12 mg kg. The LOD was determined to be 17.38 mg kg. Furthermore, the average percentage recovery for both intraday and inter-day precision studies ranged from 98% to 104% and 99% to 105%, respectively. The experimental results indicate that the prepared MMIPs exhibited broad potential for low-cost and fast detection in food safety analysis.
在本手稿中，提出了一种设计和制备磁性分子印迹聚合物（MMIPs）的新策略。基于合成的 MMIPs，建立了一种用于苏丹 I 低成本和快速检测的荧光传感器。在最佳条件下，MMIPs 的荧光强度随苏丹 I 浓度在 1-40 μM 范围内呈线性降低，检测限为 0.38 μM。该荧光传感器在辣椒粉中苏丹 I 的定量分析中表现出令人满意的性能，涵盖浓度范围为 49.66-993.12 mg kg。LOD 确定为 17.38 mg kg。此外，日内和日间精密度研究的平均回收率分别在 98%至 104%和 99%至 105%之间。实验结果表明，所制备的 MMIPs 在食品安全分析中具有低成本和快速检测的广阔应用潜力。
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