ZHOU Qiu-min,LAI Yan-qiong,LI Qiu-yang,et al.Detection of Rutin Using an Enzyme-free and Label-free Fluorescent Probe Based on Gold Nanoclusters-Bovine Serum Albumin[J].Journal of Instrumental Analysis,2021,40(10):1515-1519.
ZHOU Qiu-min,LAI Yan-qiong,LI Qiu-yang,et al.Detection of Rutin Using an Enzyme-free and Label-free Fluorescent Probe Based on Gold Nanoclusters-Bovine Serum Albumin[J].Journal of Instrumental Analysis,2021,40(10):1515-1519. DOI: 10.19969/j.fxcsxb.21012302.
Detection of Rutin Using an Enzyme-free and Label-free Fluorescent Probe Based on Gold Nanoclusters-Bovine Serum Albumin
An enzyme-free and label-free fluorescence sensing method for rutin detection was developed based on gold nanoclusters-bovine serum albumin(AuBCs-BSA) fluorescent probe prepared with bovine serum albumin(BSA) as template.The morphology and optical property of the prepared AuNCs-BSA were characterized by transmission electron microscopy(TEM),ultraviolet-visible spectroscopy(UV-Vis) and fluorescent spectroscopy(FL).The experimental results showed that fluorescence of AuNCs-BSA system was quenched in the presence of rutin as the affinity between BSA and rutin was stronger than that between BSA and AuNCs,resulting in the release of AuNCs from BSA.Under the optimized experimental conditions,the linear range of AuNCs-BSA fluorescent probe for rutin detection was 0-60 µmol/L with a detection limit(,S/N, = 3) of 0.63 µmol/L.The spiked recoveries of real sample were 99.0%-103% with relative standard deviations less than 3%.The developed fluorescent probe has the advantages of simple preparation,no labeling and high sensitivity,and provides a simple,reliable and effective method for the determination of rutin in practical samples.
关键词
芦丁金纳米簇荧光探针无酶无标记牛血清白蛋白
Keywords
rutingold nanoclustersfluorescent probeenzyme-free and label-freebovine serum albumin
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