Abstract:
:Over 200 bacterial strains were selected for anaerobic growth at 50 degrees C and extracellular polysaccharide production in a sucrose-mineral salts medium with NaNO(3) and up to 10% NaCl. The predominant cell type was an encapsulated gram-positive, motile, facultative sporeforming rod similar to Bacillus species. Strain SP018 grew and produced the polysaccharide on a variety of substrates at salinities up to 12% NaCl. Good polymer production only occurred anaerobically and was optimal between 4 and 10% NaCl. The ethanol-precipitated SP018 polymer was a charged heteropolysaccharide that contained glucose, mannose, arabinose, ribose, and low levels of allose and glucosamine. The SP018 polymer showed pseudoplastic behavior, was resistant to shearing, and had a higher viscosity at dilute concentrations and at elevated temperatures than xanthan gum. High-ionic-strength solutions reversibly decreased the viscosity of SP018 polymer solutions. The bacterium and the associated polymer have many properties that make them potentially useful for in situ microbially enhanced oil recovery processes.
journal_name
Appl Environ Microbioljournal_title
Applied and environmental microbiologyauthors
Pfiffner SM,McInerney MJ,Jenneman GE,Knapp RMdoi
10.1128/AEM.51.6.1224-1229.1986keywords:
subject
Has Abstractpub_date
1986-06-01 00:00:00pages
1224-9issue
6eissn
0099-2240issn
1098-5336journal_volume
51pub_type
杂志文章abstract::Microcosms were prepared from aquifer material, spiked with monoaromatic hydrocarbons, and amended with oxygen, nitrate, and nitrous oxide. Benzene and alkylbenzenes were degraded to concentrations below 5 micrograms/liter within 7 days under aerobic conditions, whereas only the alkylbenzenes were degraded when either...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.57.8.2403-2407.1991
更新日期:1991-08-01 00:00:00
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journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/aem.66.5.2117-2124.2000
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pub_type: 杂志文章
doi:10.1128/AEM.72.5.3130-3146.2006
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journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.62.6.1913-1921.1996
更新日期:1996-06-01 00:00:00
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journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.70.10.5973-5979.2004
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journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.62.7.2534-2539.1996
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journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.00185-17
更新日期:2017-05-31 00:00:00
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journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.45.5.1614-1621.1983
更新日期:1983-05-01 00:00:00
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pub_type: 杂志文章
doi:10.1128/AEM.40.5.866-869.1980
更新日期:1980-11-01 00:00:00
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journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.45.2.622-627.1983
更新日期:1983-02-01 00:00:00
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journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.61.11.3809-3814.1995
更新日期:1995-11-01 00:00:00
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更新日期:2004-12-01 00:00:00
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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:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/aem.69.9.5414-5422.2003
更新日期:2003-09-01 00:00:00
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journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.36.2.392-393.1978
更新日期:1978-08-01 00:00:00
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journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.65.2.740-745.1999
更新日期:1999-02-01 00:00:00
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journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.56.4.1079-1086.1990
更新日期:1990-04-01 00:00:00
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journal_title:Applied and environmental microbiology
pub_type: 杂志文章
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更新日期:1979-07-01 00:00:00
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更新日期:2012-06-01 00:00:00
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journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/aem.66.5.1857-1861.2000
更新日期:2000-05-01 00:00:00
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journal_title:Applied and environmental microbiology
pub_type: 杂志文章
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更新日期:2005-11-01 00:00:00
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journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.48.1.137-141.1984
更新日期:1984-07-01 00:00:00
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journal_title:Applied and environmental microbiology
pub_type: 杂志文章
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更新日期:2002-10-01 00:00:00
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journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.40.6.1044-1048.1980
更新日期:1980-12-01 00:00:00
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journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.03793-14
更新日期:2015-04-01 00:00:00
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journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.06941-11
更新日期:2012-06-01 00:00:00
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journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.38.5.831-835.1979
更新日期:1979-11-01 00:00:00
abstract::A selective and differential growth medium was developed for detection of Clostridium botulinum types A, B, and F. The medium consisted of peptone-glucose-yeast extract agar supplemented with cycloserine, 250 micrograms/ml; sulfamethoxazole, 76 micrograms/ml; and trimethoprim, 4 micrograms/ml as selective inhibitors a...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.50.4.1110-1111.1985
更新日期:1985-10-01 00:00:00