Which chemical is noted for being effective against Pseudomonas aeruginosa?

Acetic acid, commonly found in white vinegar, is recognized for its antimicrobial properties, including effectiveness against certain strains of bacteria like Pseudomonas aeruginosa. This organism is known for its resilience and can pose significant challenges in clinical settings, particularly in patients with compromised immune systems. The acidic environment created by acetic acid can inhibit the growth of Pseudomonas by affecting its cellular processes and by disrupting the biofilm formation that this bacterium can establish on surfaces and tissues.

The other substances listed have their specific uses but are not as effective against Pseudomonas aeruginosa. For example, 70% ethyl alcohol is excellent for general disinfection, but Pseudomonas can survive and potentially thrive in the presence of alcohol due to its ability to withstand certain stresses. Hydrogen peroxide has oxidizing properties and can be effective against a broad range of pathogens but may not be the best choice for Pseudomonas in biofilm scenarios. Quaternary ammonium compounds are also useful disinfectants but often lack efficacy against resistant strains like Pseudomonas. Therefore, acetic acid stands out in this scenario for its unique ability to combat the specific challenges posed by this microorganism.