Abstract:
:In a field study of 29 dairy farms, Pseudomonas aeruginosa was isolated more frequently (P = 0.05) from milking parlor udder wash water systems containing iodophor germicides than from those with no germicide. Most available iodine (AI2) concentrations were below the recommended level of 25 ppm (25 microgram/ml). Rubber and polyvinyl chloride hoses caused rapid decreases in the AI2 concentrations of 25 ppm iodophor solutions. AI2 dropped from 25 ppm to 6 ppm or less in 240 min for solutions contained in either polyvinyl chloride or rubber, compared with solutions in glass, which were unchanged in 240 min. Addition of inactivated iodophor solution to aqueous cultures resulted in significantly higher (P less than 0.05) numbers of P. aeruginosa at 10 and 24 h postinoculation. P. aeruginosa was grown in polyvinyl chloride tubing and exposed twice daily to 0, 10, or 25 ppm of AI2. None of the exposure concentrations eliminated the bacteria from the hoses, and bacterial numbers were not significantly different in hoses exposed to 0 and 10 ppm by the eighth treatment day. Bacteria taken from the water in these hoses were exposed to different concentrations of iodophor solution. Iodophor concentrations which will kill 50% of P. aeruginosa cultures previously exposed to 0, 10, and 25 ppm of AI2 were predicted to be 3.0, 11.8, and 20.8 ppm, respectively.
journal_name
Appl Environ Microbioljournal_title
Applied and environmental microbiologyauthors
Hicks CR,Eberhart RJ,Erskine RJ,Spencer SBdoi
10.1128/AEM.57.2.568-572.1991subject
Has Abstractpub_date
1991-02-01 00:00:00pages
568-72issue
2eissn
0099-2240issn
1098-5336journal_volume
57pub_type
杂志文章abstract:UNLABELLED:Microbes can produce molecular hydrogen (H2) via fermentation, dinitrogen fixation, or direct photolysis, yet the H2 dynamics in cyanobacterial communities has only been explored in a few natural systems and mostly in the laboratory. In this study, we investigated the diel in situ H2 dynamics in a hot spring...
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doi:10.1128/AEM.00710-16
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journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.01437-08
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journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.60.7.2545-2552.1994
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pub_type: 杂志文章
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pub_type: 杂志文章
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pub_type: 杂志文章
doi:10.1128/AEM.51.1.209-210.1986
更新日期:1986-01-01 00:00:00
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pub_type: 杂志文章
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pub_type: 杂志文章
doi:10.1128/AEM.52.2.385-387.1986
更新日期:1986-08-01 00:00:00
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pub_type: 杂志文章
doi:10.1128/AEM.53.7.1448-1453.1987
更新日期:1987-07-01 00:00:00
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journal_title:Applied and environmental microbiology
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journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.64.12.4965-4972.1998
更新日期:1998-12-01 00:00:00
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pub_type: 杂志文章
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pub_type: 杂志文章
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journal_title:Applied and environmental microbiology
pub_type: 杂志文章
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journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.44.3.737-743.1982
更新日期:1982-09-01 00:00:00
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journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.65.10.4490-4496.1999
更新日期:1999-10-01 00:00:00
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journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.57.4.1156-1160.1991
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