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Consequences of Bacterial Resistance to Disinfection by Iodine in Potable Water
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Abstract
This study was done to quantify the sensitivity of bacteria to iodine under controlled laboratory conditions. When exposed to 1 mg/; I2 for 1 min, bacteria isolated from the Shuttle were more resistant than a P. aeruginosa isolated from a povidine-iodine solution. Cultures grown in rich media were more sensitive than those grown in low nutrient solutions. The P. aeruginosa and a P. cepacia isolated from the Shuttle were resuspended in PBW after exposure to iodine. Iodinated cells recovered better than uniodinated controls. Pseudomonads in biofilms developed on coupons of stainless steel were more resistant to iodine than cells suspended in buffered water. Although resistant bacteria may colonize spacecraft water systems, multiple treatment barriers should provide adequate control of these contaminants.
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McFeters, G. and Pyle, B., "Consequences of Bacterial Resistance to Disinfection by Iodine in Potable Water," SAE Technical Paper 871489, 1987, https://doi.org/10.4271/871489.Also In
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