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Unformatted text preview: CONDITIONS INFLUENCING MICROBIAL CONTROL BY CHEMICALS Bacterial species vary in their susceptibility to chemical as well as physical agents. Some factors to consider: 1. Type of microbe a. In general, gram-negative bacteria tend to be less susceptible to chemical agents than gram- positive bacteria b. Members of the genus Pseudomonas are often highly resistant, and have even been found growing in disinfectant solutions c. Members of the genus Mycobacterium are also resistant to many chemical antimicrobials d. Bacterial endospores and cysts of protozoa are very highly resistant e. Some viruses are resistant 2. Environment a. Presence of organic matter interferes with most chemical agents b. Temperature—many chemical agents work better in warm temperatures CHEMICAL METHODS OF MICROBIAL CONTROL Most chemical agents are disinfectants or antiseptics, although there are a few chemical...
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This note was uploaded on 01/23/2012 for the course MCB MCB2010 taught by Professor Smith during the Fall '09 term at Broward College.
- Fall '09