Leng Qiuxue, Han Shuang, Zhai Minghui, Liu Shiwei, Song Yuzhuo
College of Chemistry and Chemical Engineering, Qiqihar University, Qiqihar 161006, China.
College of Chemistry and Chemical Engineering, Qiqihar University, Qiqihar 161006, China; Heilongjiang Provincial Key Laboratory of Catalytic Synthesis for Fine Chemicals, Qiqihar University, Qiqihar 161006, China.
Food Chem. 2023 Aug 1;416:135855. doi: 10.1016/j.foodchem.2023.135855. Epub 2023 Mar 6.
Here, a novel molecularly imprinted photopolymer was prepared using CsPbBr quantum dots as the fluorescence source, TpPa-2 as substrate for selective solid fluorescence detection of patulin (PAT). TpPa-2 can promote efficient recognition of PAT due to its unique structure and significantly improve the fluorescence stability and sensitivity. The test results showed that the photopolymer exhibited large adsorption capacity (131.75 mg/g), fast adsorption ability (12 mins), superior reusability and high selectivity. The sensor proposed had good linearity for PAT in the range of 0.2-20 ng/mL and was applied to the analysis of PAT in apple juice and apple jam with a limit of detection as low as 0.027 ng/mL. Therefore it maybe a promising method for solid fluorescence detection of trace PAT in food analysis.
在此，以CsPbBr量子点作为荧光源，制备了一种新型分子印迹光聚合物，以TpPa-2作为底物用于选择性固相荧光检测展青霉素（PAT）。TpPa-2因其独特的结构能够促进对PAT的高效识别，并显著提高荧光稳定性和灵敏度。测试结果表明，该光聚合物具有较大的吸附容量（131.75 mg/g）、快速的吸附能力（12分钟）、优异的可重复使用性和高选择性。所提出的传感器对PAT在0.2 - 20 ng/mL范围内具有良好的线性，并且应用于苹果汁和苹果酱中PAT的分析，检测限低至0.027 ng/mL。因此，它可能是食品分析中痕量PAT固相荧光检测的一种有前景的方法。
