Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7584811 | Food Chemistry | 2018 | 5 Pages |
Abstract
A novel fluorescent probe 3â²-hydroxy-3-oxo-3H-spiro [isobenzofuran-1,9â²-xanthene]-6â²-yl-2,4-dinitrobenzenesulfonate (probe 1) was designed and synthesized as a visual sensor for the detection of cysteine levels in milk and water samples. The addition of cysteine to the solution of probe 1 resulted in an increase in fluorescence intensity and color change, from light yellow to yellow-green. The distinct color response indicated that probe 1 could be used as a visual sensor for cysteine. Cysteine can be detected quantitatively at concentrations between 0 and 400â¯Î¼M and the detection limit of the fluorescence response to the probe was 6.5â¯Î¼M. This suggests that probe 1 could be used as a signaling tool to determine the cysteine levels in samples, such as milk and water.
Related Topics
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Analytical Chemistry
Authors
Jialin Wang, Hao Wang, Yanfeng Hao, Shaoxiang Yang, Hongyu Tian, Baoguo Sun, Yongguo Liu,