Abstract:
:Heterotrophic plate count (HPC) bacteria are naturally present in all aqueous environments. These bacteria undergo multiplication cycles in drinking water, especially in closed containers (bottled water) or in tap water when chlorine levels are dissipated, such as in dead ends in water mains or household plumbing. A study was undertaken to estimate health risk from these naturally occurring bacteria by the determination of cytotoxicity and invasiveness in a human enterocyte cell line. HPC bacteria were isolated from bottled and tap water samples by enumerating them under physical and chemical conditions analogous to human physiology. All HPC bacteria were examined at both log and lag phase of their growth cycles. Bacterial broth supernatant fluids were also tested to serve as critical negative controls. Naturally occurring HPC bacteria demonstrated low invasiveness and cytotoxicity with more than 95% of isolates showing equivalency to broth supernatant fluid. When showing either invasiveness or cytotoxicity, only a small number of cells from the culture were positive. Of those that were positive, log phase HPC bacteria were significantly more cytotoxic and invasive than those from stationary phase. Bacterial broth controls demonstrated varied, but often marked, cytotoxicity.
journal_name
J Appl Microbioljournal_title
Journal of applied microbiologyauthors
Edberg SC,Kops S,Kontnick C,Escarzaga Mdoi
10.1046/j.1365-2672.1997.00134.xsubject
Has Abstractpub_date
1997-04-01 00:00:00pages
455-61issue
4eissn
1364-5072issn
1365-2672journal_volume
82pub_type
杂志文章abstract:AIMS:A survey was conducted on the ecological distribution of bacteriocin-producing lactic acid bacteria in Miso-pastes, a typical fermented food in Japan. METHODS AND RESULTS Nine Miso-pastes were sampled for isolation of bacteriocin-producers. Almost all isolated enterococcal strains produced bacteriocins but no isol...
journal_title:Journal of applied microbiology
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doi:10.1046/j.1365-2672.2002.01573.x
更新日期:2002-01-01 00:00:00
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journal_title:Journal of applied microbiology
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journal_title:Journal of applied microbiology
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journal_title:Journal of applied microbiology
pub_type: 杂志文章
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更新日期:2009-07-01 00:00:00
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journal_title:Journal of applied microbiology
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更新日期:1999-08-01 00:00:00
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journal_title:Journal of applied microbiology
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journal_title:Journal of applied microbiology
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journal_title:Journal of applied microbiology
pub_type: 杂志文章
doi:10.1046/j.1365-2672.1997.00368.x
更新日期:1997-03-01 00:00:00
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journal_title:Journal of applied microbiology
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更新日期:2018-05-01 00:00:00
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journal_title:Journal of applied microbiology
pub_type: 杂志文章
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更新日期:2010-12-01 00:00:00
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journal_title:Journal of applied microbiology
pub_type: 杂志文章
doi:10.1046/j.1365-2672.1998.00441.x
更新日期:1998-06-01 00:00:00
abstract:AIMS:To search for culturable Burkholderia species associated with annual ryegrass in soils from natural pastures in Portugal, with plant growth-promoting effects. METHODS AND RESULTS:Annual ryegrass seedlings were used to trap Burkholderia from two different soils in laboratory conditions. A combined approach using g...
journal_title:Journal of applied microbiology
pub_type: 杂志文章
doi:10.1111/jam.13025
更新日期:2016-03-01 00:00:00
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journal_title:Journal of applied microbiology
pub_type: 杂志文章
doi:10.1111/j.1365-2672.2012.05294.x
更新日期:2012-07-01 00:00:00
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journal_title:Journal of applied microbiology
pub_type: 杂志文章
doi:10.1046/j.1365-2672.1998.00399.x
更新日期:1998-05-01 00:00:00
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journal_title:Journal of applied microbiology
pub_type: 杂志文章
doi:10.1111/j.1365-2672.2010.04755.x
更新日期:2010-10-01 00:00:00
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journal_title:Journal of applied microbiology
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journal_title:Journal of applied microbiology
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journal_title:Journal of applied microbiology
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journal_title:Journal of applied microbiology
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journal_title:Journal of applied microbiology
pub_type: 杂志文章
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更新日期:2014-08-01 00:00:00
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journal_title:Journal of applied microbiology
pub_type: 杂志文章
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更新日期:2020-08-08 00:00:00
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journal_title:Journal of applied microbiology
pub_type: 杂志文章
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更新日期:2011-05-01 00:00:00
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journal_title:Journal of applied microbiology
pub_type: 杂志文章
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更新日期:2015-03-01 00:00:00
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journal_title:Journal of applied microbiology
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doi:10.1046/j.1365-2672.2003.01968.x
更新日期:2003-01-01 00:00:00
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pub_type: 杂志文章
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journal_title:Journal of applied microbiology
pub_type: 杂志文章
doi:10.1111/jam.12939
更新日期:2015-11-01 00:00:00
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journal_title:Journal of applied microbiology
pub_type: 杂志文章
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更新日期:2003-01-01 00:00:00
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journal_title:Journal of applied microbiology
pub_type: 杂志文章
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更新日期:2021-01-22 00:00:00