Engineering a "dual-key-and-lock" ratiometric fluorescent nanoprobe for real-time reporting the freshness and quality of meat

被引:11
|
作者
Xiao, Xiao [1 ]
Shen, Yizhong [2 ]
Cao, Jinxuan [1 ]
Sun, Baoguo [1 ]
机构
[1] Beijing Technol & Business Univ, Sch Food & Hlth, Beijing 100048, Peoples R China
[2] Hefei Univ Technol, Sch Food & Biol Engn, Key Lab Agr Prod Proc Anhui Prov, Hefei 230009, Peoples R China
关键词
H2S; pH; Food safety; Fluorescent nanoprobe; Meat spoilage; HYDROGEN-SULFIDE; GOLD NANOCLUSTERS; H2S; PH; PROBE; EMISSION; DYES; FOOD;
D O I
10.1016/j.foodchem.2022.133879
中图分类号
O69 [应用化学];
学科分类号
081704 ;
摘要
Accurate and real-time reporting the freshness and quality of meat has far-reaching implications for safeguarding food safety and public health. Owing to the significant indicator role of H2S in meat spoilage, we here designed a ``dual-key-and-lock'' kind of H+-powered H2S-responsive ratiometric fluorescent nanoprobe BODIPY/ Cy7Cl@HyNPs for precise and real-time evaluating the meat freshness. After incubation with spoilt meat, BODIPY/Cy7Cl@HyNPs was simultaneously initiated by the abnormal H+ and H2S acted as "dual-keys". As a result, the fluorescence emission of BODIPY/CyCl@HyNPs at similar to 688 nm was enhanced, and the other emission at similar to 818 nm was quenched, thereby yielding a typical H+-powered ratiometric fluorescence response toward H2S in meat. In addition, we also successfully exploited BODIPY/Cy7Cl@HyNPs to achieve the real-time monitoring of the meat freshness during storage by measuring the changes of fluorescence signals and solution color.
引用
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页数:10
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