Chemical anti-microbial agents are divided into what general types? (10)
A. Phenols and phenolics
E. Oxidizing agents
G. heavy metals
H. Food and cosmetic preservatives
J. Gaseous Agents
How do chemical anti-microbial agents kill microbes?
They kill microbes by damaging their cytoplasmic membrane, proteins, DNA or cell walls
What does the killing effectiveness of anti-microbial agents depend on?
Their killing effectiveness depends on the type of antimicrobial agent, temperature, length of exposure, amount of organic matter present, pH, and the concentration and age of the antimicrobial solution.
Chemical anti-microbial agents are more effective against what?
Chemical anti-microbial agents are more effective against lipid enveloped viruses & the vegetative cells of bacteria, protozoa and fungi than they are against endospores, naked viruses or protozoan cysts.
What are antimicrobics?
antibiotics, semi-synthetic antibiotics & synthetic chemicals that are used to control microbial growth in the body of a host. Some antimicrobics are used for antimicrobial control outside of the body.
An ideal chemical antimicrobial agent should be:
2. Fast acting
3. Stable during storage
4. Not affected by the presence of organic material
5. Compatible with soaps, detergents, and other chemicals
6. Able to control all microbial growth while being harmless to humans, animals and objects.