Chen Jiawen, Ye Jun, Zhang Mingming, Xiong Jian
State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China.
School of Food Science and Engineering, South China University of Technology, Guangzhou 510640, China.
Polymers (Basel). 2022 Aug 30;14(17):3578. doi: 10.3390/polym14173578.
The residual acrylamide in food paper packaging can be transferred into water and food, which will cause harmful effects on human beings. In this paper, a rapid and easily available fluorescent probe based on carboxymethyl cellulose (CMC)/Eu (Ⅲ) nanocomposites was designed to detect the residue acrylamide with high sensibility. The probe could respond in 1 min. The concentration of acrylamide was linearly correlated to the fluorescence intensity of the probe at the emission wavelength of 615 nm in the concentration range of 0.1-100 μmol/L. The limit of detection (LOD) of the probe was 0.085 μg/L, which is lower than the guideline value of the European Union, the U.S. EPA, and the WHO. An experiment was performed to simulate the acrylamide migrating from food-contacting paper materials to different foods, including waterborne food, alcohol beverage, acidic food, and greasy food. The recoveries and RSDs of acrylamide in all samples indicated that the CMC/Eu (Ⅲ) fluorescent probe was efficient for acrylamide detection. The possible mechanism of the probe for acrylamide detection involved both dynamically quenching and static quenching by forming of non-fluorescent substances.
食品纸包装中的残留丙烯酰胺可转移至水和食品中，这会对人体造成有害影响。本文设计了一种基于羧甲基纤维素（CMC）/铕（Ⅲ）纳米复合材料的快速且易于获得的荧光探针，用于高灵敏度检测残留丙烯酰胺。该探针可在1分钟内作出响应。在0.1 - 100 μmol/L浓度范围内，丙烯酰胺浓度与探针在发射波长615 nm处的荧光强度呈线性相关。该探针的检测限（LOD）为0.085 μg/L，低于欧盟、美国环境保护局和世界卫生组织的指导值。进行了一项实验，模拟丙烯酰胺从食品接触纸材料迁移到不同食品中，包括水性食品、酒精饮料、酸性食品和油腻食品。所有样品中丙烯酰胺的回收率和相对标准偏差表明，CMC/铕（Ⅲ）荧光探针对丙烯酰胺检测有效。该探针检测丙烯酰胺的可能机制涉及动态猝灭和通过形成非荧光物质的静态猝灭。
