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Hydrazone chemistry mediated toehold strand displacement cascade and its application for 5-hydroxymethylfurfural
Anzhi Sheng1, Lihong Su1, Jiayi Wang1
1Laboratory of Biosensing Technology, School of Life Sciences, Shanghai University, Shanghai, 200444, PR China; Shanghai Key Laboratory of Bio-Energy Crops, Shanghai University, Shanghai, 200444, PR China.
This study introduces hydrazone chemistry for analyzing 5-hydroxymethylfurfural (HMF) using toehold strand displacement cascade (TSDC). The novel method detects HMF in food by monitoring fluorescence changes, offering a sensitive and specific approach.
Area of Science:
- Analytical Chemistry
- Biochemistry
- Nanotechnology
Background:
- Toehold strand displacement cascade (TSDC) is a powerful tool for molecular detection.
- Interface-supported TSDC requires efficient capturing modes for target analytes.
- 5-hydroxymethylfurfural (HMF) is an important food quality indicator with an aldehyde group.
Purpose of the Study:
- To explore hydrazone chemistry as a novel capturing mode for interface-supported TSDC.
- To establish a method for analyzing HMF based on hydrazone chemistry-mediated TSDC.
- To demonstrate the application of this method for HMF detection in food samples.
Main Methods:
- Utilizing hydrazone chemistry to covalently capture HMF via its aldehyde group onto magnetic beads.
- Employing magnetic beads functionalized with hydrazine groups.
- Monitoring fluorescence changes resulting from HMF-induced inhibition of TSDC.
Main Results:
- Hydrazone bond formation effectively captured HMF, inhibiting TSDC.
- The method demonstrated simplicity, specificity, and high sensitivity for HMF analysis.
- Successful application in analyzing HMF content in real food samples.
Conclusions:
- Hydrazone chemistry provides a new and effective capturing strategy for interface-supported TSDC.
- The developed method offers a sensitive and specific platform for HMF quantification.
- This approach can be extended to analyze other saccharic derivatives and aldehydes.
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