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

• Safety Detection • Previous Articles    

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

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

CLC Number: