Journal
ANALYTICAL CHEMISTRY
Volume 93, Issue 31, Pages 11033-11042Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.analchem.1c02425
Keywords
-
Categories
Funding
- National Key Research and Development Program of China [2019YFC1605100]
- National First-class Discipline Program of Food Science and Technology [JUFSTR20180302]
Ask authors/readers for more resources
This study developed oil-soluble CsPbBr1.5I1.5 quantum dots and water-stable CsPbBr3 nanosheets to fabricate various fluorescence sensors for detection of acid number, 3-MCPD, and moisture content in edible oil. These sensors offer new materials and approaches for multiplex-mode oil-phase food safety monitoring, expanding the application of perovskite nanomaterials in bioanalysis.
Water-soluble fluorescence nanomaterials are widely applied for water-phase food safety monitoring. However, there is still a challenge for the development of oil-soluble fluorescence nanomaterials for oil-phase food safety detection. Particularly, the edible oil quality has a huge impact on human health, in which excessive acid number (AN), 3-chloro-1,2-propanediol (3-MCPD), and moisture content (MC) are critical monitoring factors. Herein, orange-emitting oil-soluble CsPbBr1.5I1.5 quantum dots (QDs) were prepared and applied for AN and 3-MCPD detection depending on fluorescence quenching and wavelength shifts. A turn-off fluorescence sensor and wavelength-shift fluorescence colorimetric sensor were fabricated for AN and 3-MCPD detection. Water-sensitive mesoporous silica-coated CsPbBr1.5I1.5 QDs were employed for the establishment of ratiometric fluorescence sensors for MC monitoring by introducing water-stable green-emitting CsPbBr3 nanosheets (NSs) as reference probes. Perovskite nanomaterial-engineered multiplex-mode fluorescence sensors were proposed for the detection of AN, 3-MCPD, and MC in edible oil, with the limits of detection (LODs) of 0.71 mg KOH/g, 39.8 mu g/mL 3-MCPD, and 0.45% MC, respectively. This work not only expands the application of perovskite nanomaterials in the bioanalysis field but also provides new materials and novel approaches for the multiplex-mode oil-phase food safety monitoring.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available