{"title":"Eu-polyaspartic acid based ratiometric fluorescent probes for ultrasensitive and visual detection of tetracycline and copper ions in food samples","authors":"","doi":"10.1016/j.jfca.2024.106867","DOIUrl":null,"url":null,"abstract":"<div><div>The visualization and accurate on-site detection of tetracycline and Cu<sup>2+</sup> residues in food are essential for maintaining food safety and public health. A novel poly (aspartic acid) Ratiometric fluorescent probe was designed for the sensitive visual detection of tetracycline (Tc) and Cu<sup>2+</sup> using the EDTA-Eu<sup>3+</sup> complex as the sensing unit and fluorescein dye as the internal standard. The fluorescence of Eu<sup>3+</sup> at 617 nm was turned on significantly by Tc via the “antenna effect” and can be quenched by Cu<sup>2+</sup> owing to the inner filter effect. The probes selectively detected Tc and Cu<sup>2+</sup> over a wide linear range, low LODs of 10 nM and 333 nM, respectively, were obtained. A smartphone APP and probe-loaded test paper were also assembled into a biomass-based portable sensor for visual point-of-use analysis. The fabricated sensors successfully monitored the Tc and Cu<sup>2+</sup> levels in milk, honey, and tap water samples, suggesting their broad applications in food safety monitoring and environmental analysis.</div></div>","PeriodicalId":15867,"journal":{"name":"Journal of Food Composition and Analysis","volume":null,"pages":null},"PeriodicalIF":4.0000,"publicationDate":"2024-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Food Composition and Analysis","FirstCategoryId":"97","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0889157524009013","RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, APPLIED","Score":null,"Total":0}
引用次数: 0
Abstract
The visualization and accurate on-site detection of tetracycline and Cu2+ residues in food are essential for maintaining food safety and public health. A novel poly (aspartic acid) Ratiometric fluorescent probe was designed for the sensitive visual detection of tetracycline (Tc) and Cu2+ using the EDTA-Eu3+ complex as the sensing unit and fluorescein dye as the internal standard. The fluorescence of Eu3+ at 617 nm was turned on significantly by Tc via the “antenna effect” and can be quenched by Cu2+ owing to the inner filter effect. The probes selectively detected Tc and Cu2+ over a wide linear range, low LODs of 10 nM and 333 nM, respectively, were obtained. A smartphone APP and probe-loaded test paper were also assembled into a biomass-based portable sensor for visual point-of-use analysis. The fabricated sensors successfully monitored the Tc and Cu2+ levels in milk, honey, and tap water samples, suggesting their broad applications in food safety monitoring and environmental analysis.
期刊介绍:
The Journal of Food Composition and Analysis publishes manuscripts on scientific aspects of data on the chemical composition of human foods, with particular emphasis on actual data on composition of foods; analytical methods; studies on the manipulation, storage, distribution and use of food composition data; and studies on the statistics, use and distribution of such data and data systems. The Journal''s basis is nutrient composition, with increasing emphasis on bioactive non-nutrient and anti-nutrient components. Papers must provide sufficient description of the food samples, analytical methods, quality control procedures and statistical treatments of the data to permit the end users of the food composition data to evaluate the appropriateness of such data in their projects.
The Journal does not publish papers on: microbiological compounds; sensory quality; aromatics/volatiles in food and wine; essential oils; organoleptic characteristics of food; physical properties; or clinical papers and pharmacology-related papers.