食品科学 ›› 2021, Vol. 42 ›› Issue (24): 283-288.doi: 10.7506/spkx1002-6630-20210201-018

• 安全检测 • 上一篇    

基于柠檬酸-铕纳米配位聚合物构建荧光探针快速检测汤煲中5’-肌苷酸含量

高田毅,孙冲,朱宏星,黄杨,曹锦轩,王道营   

  1. (1.宁波大学食品与药学学院,浙江省动物蛋白食品精深加工技术重点实验室,浙江 宁波 315800;2.江苏省农业科学院农产品加工研究所,江苏 南京 210014)
  • 发布日期:2021-12-30
  • 基金资助:
    国家自然科学基金面上项目(31972137); 省部共建国家重点实验室培育基地-江苏省食品质量安全重点实验室项目(2019JG001)

Rapid Detection of Inosine-5’-monophosphate in Soup Based on Citrate/Eeuropium Nano-coordination Polymer as a Fluorescence Probe

GAO Tianyi, SUN Chong, ZHU Hongxing, HUANG Yang, CAO Jinxuan, WANG Daoying   

  1. (1. Key Laboratory of Food Deep Processing Technology of Animal Protein of Zhejiang Province, College of Food and Pharmaceutical Sciences, Ningbo University, Ningbo 315800, China; 2. Institute of Agri-products Processing, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China)
  • Published:2021-12-30

摘要: 基于柠檬酸-铕金属有机纳米配体聚合物(citrate/europium lanthanide coordination polymer nanoparticles,Cit/Eu LCP NPs)构建快速检测肉品汤煲中5’-肌苷酸(inosine-5’-monophosphate,5’-IMP)的荧光探针。研究结果表明,5’-IMP对Cit/Eu?LCP?NPs有良好的荧光猝灭作用。在最佳条件下,该荧光探针在5’-IMP?2.5~200?μg/mL的质量浓度范围内呈现出良好的线性关系,检出限为0.17?μg/mL,且具备良好的抗干扰、稳定性和重复性。为了验证方法可行性,将该方法应用于实际鸡汤样品中的5’-IMP检测,测得加标回收率为97.85%~103.95%,可为快速检测肉品汤煲中5’-IMP提供新的思路和方法。

关键词: 镧系金属;配位聚合物;荧光探针;检测分析

Abstract: In this study, a fluorescent probe based on citrate/europium lanthanide coordination polymer nanoparticles (Cit/Eu LCP NPs) was constructed to detect inosine-5’-monophosphate (5’-IMP) in soup. The results showed that 5’-IMP could quench the fluorescence of Cit/Eu LCP NPs. Under the optimal conditions, the fluorescence probe showed a good linear relationship with 5’-IMP in the concentration range of 2.5–200 μg/mL with a detection limit of 0.17 μg/mL. Meanwhile, the fluorescent probe had good anti-interference ability, stability and repeatability. In order to verify its feasibility, Cit/Eu LCP NPs was applied to the determination of 5’-IMP in a real chicken soup sample, indicating that the recoveries of the added 5’-IMP was 97.85%–103.95%. Therefore, the Cit/Eu LCP NPs-based fluorescent probe can be used for the rapid detection of 5’-IMP in soup.

Key words: lanthanide metals; coordination polymer; fluorescence probe; detection and analysis

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