antibacterial agent

An antibacterial agent is a chemical compound or physical agent used to destroy or prevent the growth of microorganisms, particularly bacteria. The modern era of antimicrobial therapy began with the discovery of penicillin in the early 1940s, followed by other antibiotics like streptomycin. These agents can be naturally derived from microorganisms or plants, or they can be synthetically produced.

While the term "antibiotic" specifically refers to drugs targeting bacteria, "antimicrobial agent" is a broader category that includes substances effective against a wider range of microbes. Antiseptics are antimicrobial agents applied to living tissues to prevent infection, distinct from disinfectants used on inanimate objects. The effectiveness of these agents depends on factors like concentration, time, and temperature.12