期刊
FOOD CHEMISTRY
卷 410, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.foodchem.2022.135381
关键词
Ratiometric probes; Portability; Smartphone-based detection; Hydrogen peroxide; 3D-printed testing system
This study reports a novel supramolecular strategy that converts the typical on-off response to H2O2 into a ratiometric response, enabling on-site detection of H2O2 with a smartphone-based miniaturized testing system. The method shows acceptable sensitivity, good anti-interference ability, and desirable accuracy compared to standard methods, and can be used to detect H2O2 residue in commercial milk samples with portable testing apparatuses.
The on-site detection of hydrogen peroxide (H2O2) is important for maintaining food safety as the ingestion of H2O2 can lead to serious pathological conditions. However, most reported fluorescent probes require a fluo-rometer to ensure readable signal output and reliable detection result. Consequently, the fluorescent detection of H2O2 can be realized only within a standard laboratory setting. Herein, we report a novel supramolecular strategy that can successfully convert the typical off-on response to H2O2 into a ratiometric response, which allows the on-site detection of H2O2 when used in conjunction with a smartphone-based 3D-printed miniaturized testing system. This method has acceptable sensitivity, good anti-interference ability, and desirable accuracy compared to a standard detection method. More importantly, this portable ratiometric method can be used to detect H2O2 residue in commercial milk samples with the simple testing apparatuses.
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