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FIBS-enabled Noninvasive Metabolic Profiling
Published on: February 3, 2014
Fructose-selective calorimetric biosensor in flow injection analysis.
Sunil G Bhand1, Srimathi Soundararajan, Ioana Surugiu-Wärnmark
1Pure and Applied Biochemistry, Centre for Chemistry, Lund University, P.O Box 124, S-221 00 Lund, Sweden. sunil17_bhand@yahoo.com
Analytica Chimica Acta
|May 12, 2010
Summary
A novel biosensor accurately measures fructose in syrups without glucose interference. This enzyme thermistor method offers rapid, inexpensive, and reliable fructose analysis for food samples.
Area of Science:
- Biotechnology
- Analytical Chemistry
- Food Science
Background:
- Accurate fructose quantification is crucial for food analysis.
- Existing methods may struggle with selectivity and cost-effectiveness.
Purpose of the Study:
- To develop a highly selective and interference-free biosensor for fructose measurement.
- To enable rapid and inexpensive fructose analysis in real-world samples like syrups.
Main Methods:
- Enzyme-based assay utilizing hexokinase and fructose-6-phosphate-kinase.
- Heat liberation monitored via an enzyme thermistor.
- Flow Injection Analysis (FIA)-based, mediator-free calorimetric detection.
Main Results:
- Achieved good linearity (0.5-6.0 mM) and a low detection limit (0.12 mM).
- Demonstrated high selectivity, unaffected by glucose.
- Showcased operational stability over three months and a six-month shelf life.
Conclusions:
- The developed biosensor provides a reliable, rapid, and cost-effective method for routine fructose monitoring.
- This technique is suitable for analyzing fructose content in commercial food products and syrups.
- The biosensor's stability and selectivity make it a valuable tool for the food industry.
