纳米金-罗丹明B协同作用在食品安全快速检测中的研究概述

Research progress on the application of gold nanoparticles together with rhodamine B in rapid detection for food safety

纳米金粒子(gold nanoparticles,GNPs)是一种制备简单的贵金属纳米材料,具有良好的生物兼容性和光学性质。罗丹明B(rhodamine B,RB)是一种无毒的荧光染料,具备优异的水溶性、较高的消光系数和高的量子产率,二者在实验中均有较广泛的应用。研究发现,RB可以通过静电作用吸附到GNPs的表面,该结合物会产生荧光和可见光信号的变化,且该信号强度随着待测靶标浓度的改变而呈现一定趋势的变化。该文详细介绍了基于不同原理和检测信号的GNPs-RB协同作用,在检测食品中农兽药残留、重金属离子、非法添加物和外源性化学污染物等有毒有害物质的研究进展,以期为食品安全监控提供有益参考。

Gold nanoparticles( GNPs) are simple noble metal nanomaterials with good biocompatibility and optical properties. Rhodamine B( RB) is a non-toxic fluorescent dye with excellent water-soluble property,high extinction coefficient and high quantum yield. Both GNPs and RB have been widely used in researches. It was found that RB could absorb to the surface of GNPs through electrostatic interactions,resulting in variations in fluorescence and visible signals along with the concentrations of analytes. Development of detecting toxic and harmful substances in foods,such as pesticides,veterinary drugs,heavy metal ions,illegal additives,and exogenous chemical pollutants,based on different mechanisms and detecting signals for the synergistic effect of GNPs-RB was described in detail in this paper,providing useful references for food safety monitoring.