Methods for in vitro evaluating antimicrobial activity: A review

Area of Science:

• Microbiology
• Pharmacology
• Biotechnology

Background:

• Growing interest in novel antimicrobial agents due to increasing microbial resistance.
• Need for effective screening and evaluation methods for antimicrobial activity.
• Limitations of current methods in fully assessing antimicrobial effects.

Purpose of the Study:

• To provide a comprehensive review of in vitro antimicrobial susceptibility testing methods.
• To detail the advantages and limitations of various bioassays.
• To aid researchers in selecting appropriate methods for antimicrobial discovery.

Main Methods:

• Literature review of established and emerging antimicrobial susceptibility testing techniques.
• Analysis of commonly used bioassays (disk-diffusion, well diffusion, broth/agar dilution).
• Evaluation of less common but potentially rapid methods (flow cytofluorometric, bioluminescent assays).

Main Results:

• Documented advantages and disadvantages of each antimicrobial testing method.
• Identified challenges in standardization and reproducibility for advanced methods.
• Highlighted the potential of newer methods for rapid assessment of antimicrobial effects.

Conclusions:

• Standard methods are widely used but may lack depth in assessing microbial viability.
• Advanced methods offer rapid insights into antimicrobial impact but require further validation.
• A thorough understanding of method-specific limitations is crucial for effective antimicrobial agent development.