Microbial Acoustical Analyzer for Antibiotic Indication.

Area of Science:

• Biosensors
• Acoustic Analysis
• Antibiotic Detection

Background:

• Accurate and rapid antibiotic detection is crucial for quality control and safety.
• Existing methods can be time-consuming or require specialized equipment.
• Development of portable, efficient analytical tools is needed.

Purpose of the Study:

• To develop a compact acoustic analyzer for the express analysis of antibiotics.
• To determine the effectiveness of a piezoelectric resonator-based system for chloramphenicol detection.
• To validate the analyzer's performance against established analytical techniques.

Main Methods:

• Development of a compact acoustic analyzer utilizing a piezoelectric resonator with a lateral electric field.
• Employment of bacterial cells sensitive to chloramphenicol as the sensory element.
• Measurement of the electrical impedance modulus change upon antibiotic addition as the analytical signal.

Main Results:

• Successful determination of chloramphenicol in aqueous solutions within the 0.5-15 μg/mL concentration range.
• Analysis time was established to be under 4 minutes.
• Experimental results correlated well with light phase-contrast microscopy and standard microbiological analysis.

Conclusions:

• The developed compact biological analyzer is effective for rapid chloramphenicol detection.
• The system demonstrates stability, reproducibility, and repeatability, making it suitable for express analysis.
• This technology offers a promising alternative for antibiotic monitoring.