玉米赤霉烯酮
量子点
注意事项
费斯特共振能量转移
胶体金
纳米技术
纳米颗粒
化学
材料科学
荧光
真菌毒素
医学
物理
食品科学
光学
护理部
作者
Lianjun Song,Meijun Lu,Puye Liang,Tiange Li,Xianqing Huang,Yan Ma,Libin Wan,Tianlin Wang
出处
期刊:Food Control
[Elsevier]
日期:2024-06-01
卷期号:: 110666-110666
标识
DOI:10.1016/j.foodcont.2024.110666
摘要
Herein, a ratiometric fluorescence aptasensor was established for zearalenone (ZEN) detection based on fluorescence resonance energy transfer (FRET) between aptamer-modified CdTe quantum dots (QDs) as donor and gold nanoparticles (AuNPs) as acceptor. The fluorescence of CdTe QDs quenched by AuNPs based on FRET, while Si QDs with blue fluorescence as reference. The aptamer-modified CdTe QDs were adsorbed to ZEN in the presence of ZEN, and the distance between the energy receptor and the donor increased, which prevented the FRET and led to the fluorescence recovering of CdTe QDs. The aptasensor exhibited a limit of detection of 3.5 pg/mL with a linear range of 0.01-100 ng/mL. In addition, a portable detection device was constructed by integrating with smartphone for point-of-care testing (POCT) of ZEN with satisfactory results, which could provide a promising application for visual POCT of ZEN in cereals.
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