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Unformatted text preview: TYPES OF DISINFECTANTS ANTIBIOTICS---two which are not used in treating disease are used as food preservatives. a. NISIN--- added to cheese to prevent growth of endospores b. NATAMYCIN---added to foods to prevent growth of fungi 10 ALDEHYDES---these can act very effectively against microbes. They inactivate proteins. a. FORMALDEHYDE 1) FORMALDEHYDE GAS---can be used as a disinfectant 2) FORMALIN , a 37% aqueous solution of formaldehyde gas, has been used to preserve biological specimens and inactivate bacteria and viruses in vaccines. b. GLUTARALDEHYDE---this is more effective and somewhat less irritating than formaldehyde. It is used to disinfect medical equipment that cannot withstand autoclaving. This is the most commonly used chemical sterilant. A 2 % solution, such as CIDEX, kills bacteria including Mycobacterium tuberculosis and viruses in 10 minutes. Endospores require 3 - 10 hours. If the 10 hours are allowed, this is considered to in 10 minutes....
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