Miao Chen, Xuerong Li, Qiulan Li, Jitao Li, Yaohong Gu, Peng Yang, Bo Yang, Yaling Yang
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引用次数: 0
Abstract
Nanozyme-based dephosphorylation reactions show potential for monitoring organophosphorus pesticides (OPs) but require efficient sensing platforms. Herein, a novel dual-mode cascaded amplification sensing strategy was established for the rapid detection of profenofos by employing metal-organic framework-based nanozymes (Ce-UiO-66/Zn) and carbon-dot-based nanozymes (Ce-CDs/MnO2). Based on the high phosphohydrolase-like activity of Ce-UiO-66/Zn, profenofos could be rapidly hydrolyzed and the hydrolysis product would be further oxidized by Ce-CDs/MnO2 with laccase-like activity, and the oxidative product was coupled with 4-aminoantipyrine to form a red product for colorimetric detection. Additionally, this cascade reaction was also used in the exploration of a smartphone sensing platform due to its obvious color change, which was used to visually analyze profenofos in different food samples and achieved ideal recovery rates. This study provides new insight into development of highly sensitive and selective biosensors, food safety and environmental on-site monitoring.
期刊介绍:
Food Chemistry publishes original research papers dealing with the advancement of the chemistry and biochemistry of foods or the analytical methods/ approach used. All papers should focus on the novelty of the research carried out.