Effects of antecedent fermentative and respiratory growth on the detection of chloramine-stressed Escherichia coil and Salmonella typhimurium |
| |
Authors: | Thunberg R L Sexstone A J Calabrese J P Bissonnette G K |
| |
Institution: | Division of Plant and Soil Sciences, West Virginia University, Morgantown 26506-6057, USA. |
| |
Abstract: | In vitro laboratory studies were performed to assess the effects of antecedent growth conditions on the recovery of Escherichia coli ATCC 25922 and Salmonella typhimurium ATCC 14028 following chloramine disinfection. Six- and 18-h cultures of each organism were grown under aerobic, fermentative, and nitrate-reducing conditions prior to disinfection. At predetermined time intervals during a 10-min exposure to chloramine, survivors were surface plated on nonselective recovery media to determine C(n)t values. It was observed that nitrate-reducing growth predisposed the test organisms towards an increased sensitivity to chloramine stress over cells grown under fermentation or aerobic conditions (p < 0.01). |
| |
Keywords: | |
本文献已被 PubMed 等数据库收录! |
|