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Novel sensing system for glucose based on the complex formation between phenylborate and fluorescent diol compounds
K Kataoka1, I Hisamitsu, N Sayama
1Department of Materials Science, Science University of Tokyo, Chiba.
Journal of Biochemistry
|June 1, 1995
Summary
A novel synthetic glucose sensor utilizes fluorescence changes from competitive binding. This system offers a linear response for glucose detection up to 500 mg/dl, showing promise for optical sensing applications.
Area of Science:
- Biomedical Engineering
- Analytical Chemistry
- Materials Science
Background:
- Developing stable and easy-to-handle glucose sensors is crucial for long-term monitoring.
- Totally synthetic sensing moieties offer advantages over traditional glucose detection methods.
Purpose of the Study:
- To demonstrate the feasibility of a novel aqueous glucose sensing system.
- To explore a fluorescence-based competitive binding mechanism for glucose detection.
Main Methods:
- Utilized 6,7-Dihydroxy-4-methyl-coumarin (DHMC) as a fluorophore and 3-propionamidophenylboronic acid (PAPBA) as a phenylborate compound.
- Investigated the competitive binding between DHMC, PAPBA, and glucose in an aqueous environment.
- Measured fluorescence intensity changes in response to varying glucose concentrations.
Main Results:
- Established a linear relationship between glucose concentration and fluorescence intensity.
- Demonstrated effective glucose detection in the range of 0 to 500 mg/dl.
- Confirmed the principle of fluorescence change based on competitive binding.
Conclusions:
- The developed synthetic glucose sensing system is feasible for aqueous applications.
- The system's design allows for potential integration into optical fiber-based opto-sensing devices.
- Future development can leverage various DHMC and phenylborate derivatives for enhanced sensor functionality.