Portable paper-strip and cotton-swab sensors for vitamin B12 detection (IMAGE)
Caption
Portable fluorescence-based formats for vitamin B12 detection. (A) Photographs of B,N-CD-loaded test strips exposed to egg-yolk samples containing different concentrations of vitamin B12; (B) photographs of B,N-CD-loaded cotton-swab sensors tested with the corresponding samples; and (C) linear relationship between the green-to-blue (G/B) fluorescence intensity ratio and vitamin B12 concentration. The test-strip response showed a linear relationship with vitamin B12 concentration over 0–80 μM (R² = 0.9927). Images were captured under 365 nm UV light.
Credit
Mengnan Wu, Xiaoshuang Wang, Lijun Wang, Ruiyang Ji, Qiaoli Yue
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Credit must be given to the creator. Only noncommercial uses of the work are permitted.
License
CC BY-NC