A portable smartphone platform utilizing dual-sensing signals for visual determination of semicarbazide in food samples
文献类型： 外文期刊
作者： Wang, Lingyun 1 ; Lai, Bihong 1 ; Ran, Xueguang 2 ; Tang, Hao 1 ; Cao, Derong 1 ;
作者机构： 1.South China Univ Technol, Sch Chem & Chem Engn, Key Lab Funct Mol Engn Guangdong Prov, 381 Wushan Rd, Guangzhou 510641, Peoples R China
2.Inst Anim Sci, Guangdong Acad Agr Sci, State Key Lab Swine & Poultry Breeding Ind, Guangzhou 510641, Peoples R China
期刊名称：JOURNAL OF MATERIALS CHEMISTRY B （ 影响因子：7.0； 五年影响因子：6.5 ）
ISSN： 2050-750X
年卷期： 2024 年 12 卷 14 期
页码：
收录情况： SCI
摘要： Semicarbazide (SEM) is a metabolite of antibiotic nitrofurazone and a food contaminant in food production, showing potential carcinogenic, mutagenic, teratogenic, and toxic effects on human health. It is urgent to develop a highly efficient and sensitive assay for visual detection of SEM. In this paper, a pyrrolopyrrole cyanine fluorescent probe (PPCy-1) was reported for visualization and quantitative analysis of SEM through a chromophore reaction sensing mechanism for the first time. The probe towards SEM exhibited a fast response (10 min), a low detection limit (0.18 mu M), high selectivity, and distinct dual ratiometric fluorescence turn-on and colorimetric modes. Its practicability was further verified by detecting SEM in meat, water, and honey samples with satisfactory recovery values. More importantly, a smartphone-assisted portable testing platform was constructed based on a PPCy-1-immobilized test paper or a polyamide thin film with a color scanning APP for real-time and on-site detection of SEM. This work provides low-cost, convenient, and rapid assays for visual SEM detection, which have potential applications in food safety monitoring. (1) A novel fluorescent probe for SEM detection is developed for the first time. (2) Portable sensing platforms utilizing colorimetric and ratiometric fluorescence modes for sensing SEM.
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