Plant tissue-based chemiluminescence flow biosensor for glycolic acid

Area of Science:

• Biotechnology
• Analytical Chemistry
• Biosensors

Background:

• Glycolic acid is a significant metabolite with implications in various biological and industrial processes.
• Accurate quantification of glycolic acid is crucial for research and quality control.
• Existing detection methods may lack sensitivity, speed, or cost-effectiveness.

Purpose of the Study:

• To develop a novel plant tissue-based chemiluminescence (CL) biosensor for the detection of glycolic acid.
• To integrate the biosensor with flow injection analysis (FIA) for enhanced analytical performance.
• To evaluate the analytical characteristics and stability of the developed biosensor.

Main Methods:

• Utilized spinach tissue as the molecular recognition element, leveraging endogenous glycolate oxidase and peroxidase.
• Employed a flow injection analysis system for automated sample handling and detection.
• Quantified glycolic acid based on the chemiluminescence signal generated from the enzymatic oxidation and luminol reaction.

Main Results:

• Achieved a linear relationship between CL intensity and glycolic acid concentration from 4 x 10(-3) to 4 x 10(-6) mol/L.
• Established a low detection limit of 1.3 x 10(-6) mol/L for glycolic acid.
• Demonstrated good stability of the biosensor for approximately 3 weeks.
• Reported a rapid analysis time of 1.5 minutes per sample with a relative standard deviation of 1.7%.

Conclusions:

• The developed plant tissue-based CL biosensor is a sensitive, stable, and efficient tool for glycolic acid determination.
• The integration with FIA offers a promising approach for rapid and automated analysis of glycolic acid.
• This biosensor presents a viable alternative for glycolic acid quantification in various applications.