TYPES OF DISINFECTANTS SURFACE-ACTIVE AGENTS (SURFACTANTS)---these agents decrease surface tension and include soaps and detergents. a. SOAPS---main value is in causing microbes to be mechanically removed. Washing with soap breaks up the oily film that covers skin and allows microbes and dirt to be washed away. Deodorant soaps have antimicrobial ingredients added. b. ACID-ANIONIC SURFACE-ACTIVE SANITIZERS---used in cleaning food and dairy equipment. (Mechanism of action uncertain) 7. QUATERNARY AMMONIUM COMPOUNDS---these are surface-active cationic detergents. These are very pleasant to use---non-irritating, non-corrosive, no unpleasant odor, etc. They are strongly bacteriocidal against gram-positive bacteria but somewhat less effective against gram-negative. They also kill fungi, amoebas, and some viruses. Unfortunately, they are
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