Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
4
pubmed:dateCreated
2002-3-27
pubmed:abstractText
Bacterial populations inhabiting ultrapure water (UPW) systems were investigated. The analyzed UPW systems included pilot scale, bench scale, and full size UPW plants employed in the semiconductor and other industries. Bacteria present in the polishing loop of the UPW systems were enumerated by both plate counts and epifluorescence microscopy. Assessment of bacterial presence in UPW by epifluorescence microscopy (cyanotolyl tetrazolium chloride [CTC] and DAPI [4',6'-diamidino-2-phenylindole] staining) showed significantly higher numbers (10 to 100 times more bacterial cells were detected) than that determined by plate counts. A considerable proportion of the bacteria present in UPW (50 to 90%) were cells that did not give a positive signal with CTC stain. Bacteria isolated from the UPW systems were mostly gram negative, and several groups seem to be indigenous for all of the UPW production systems studied. These included Ralstonia pickettii, Bradyrhizobium sp., Pseudomonas saccharophilia, and Stenotrophomonas strains. These bacteria constituted a significant part of the total number of isolated strains (>or=20%). Two sets of primers specific to R. pickettii and Bradyrhizobium sp. were designed and successfully used for the detection of the corresponding bacteria in the concentrated UPW samples. Unexpectedly, nifH gene sequences were found in Bradyrhizobium sp. and some P. saccharophilia strains isolated from UPW. The widespread use of nitrogen gas in UPW plants may be associated with the presence of nitrogen-fixing genes in these bacteria.
pubmed:commentsCorrections
http://linkedlifedata.com/resource/pubmed/commentcorrection/11916667-10196754, http://linkedlifedata.com/resource/pubmed/commentcorrection/11916667-10390872, http://linkedlifedata.com/resource/pubmed/commentcorrection/11916667-1236620, http://linkedlifedata.com/resource/pubmed/commentcorrection/11916667-2039237, http://linkedlifedata.com/resource/pubmed/commentcorrection/11916667-3162770, http://linkedlifedata.com/resource/pubmed/commentcorrection/11916667-3312987, http://linkedlifedata.com/resource/pubmed/commentcorrection/11916667-3883894, http://linkedlifedata.com/resource/pubmed/commentcorrection/11916667-6508306, http://linkedlifedata.com/resource/pubmed/commentcorrection/11916667-7547291, http://linkedlifedata.com/resource/pubmed/commentcorrection/11916667-7828077, http://linkedlifedata.com/resource/pubmed/commentcorrection/11916667-7868622, http://linkedlifedata.com/resource/pubmed/commentcorrection/11916667-7984417, http://linkedlifedata.com/resource/pubmed/commentcorrection/11916667-811168, http://linkedlifedata.com/resource/pubmed/commentcorrection/11916667-8444652, http://linkedlifedata.com/resource/pubmed/commentcorrection/11916667-8811093
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Apr
pubmed:issn
0099-2240
pubmed:author
pubmed:issnType
Print
pubmed:volume
68
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
1548-55
pubmed:dateRevised
2009-11-18
pubmed:meshHeading
pubmed-meshheading:11916667-Colony Count, Microbial, pubmed-meshheading:11916667-Equipment Contamination, pubmed-meshheading:11916667-Genes, rRNA, pubmed-meshheading:11916667-Gram-Negative Bacteria, pubmed-meshheading:11916667-Industry, pubmed-meshheading:11916667-Microscopy, Fluorescence, pubmed-meshheading:11916667-Molecular Sequence Data, pubmed-meshheading:11916667-Oxidoreductases, pubmed-meshheading:11916667-Phylogeny, pubmed-meshheading:11916667-Polymerase Chain Reaction, pubmed-meshheading:11916667-RNA, Ribosomal, 16S, pubmed-meshheading:11916667-Semiconductors, pubmed-meshheading:11916667-Sequence Analysis, DNA, pubmed-meshheading:11916667-Universities, pubmed-meshheading:11916667-Water Microbiology, pubmed-meshheading:11916667-Water Purification, pubmed-meshheading:11916667-Water Supply
pubmed:year
2002
pubmed:articleTitle
Analysis of bacteria contaminating ultrapure water in industrial systems.
pubmed:affiliation
The Questor Centre, The Queen's University of Belfast, Belfast BT9 5AG, Northern Ireland. L.Kulakov@qub.ac.uk
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't