Influence of pH and Temperature on Enumeration of Cellulose- and Hemicellulose-Degrading Thermophilic Anaerobes in Neutral and Alkaline Icelandic Hot Springs
Cellulose- and hemicellulose-degrading thermophilic anaerobes were enumerated in biomat samples of various temperatures from two different hot springs in the Hveragerǒi area of Iceland: one spring had a pH near 7, the second had a pH near 9. The most-probable-number technique was used for enumeratio...
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ftpubmed:oai:pubmedcentral.nih.gov:182194 2023-05-15T16:50:06+02:00 Influence of pH and Temperature on Enumeration of Cellulose- and Hemicellulose-Degrading Thermophilic Anaerobes in Neutral and Alkaline Icelandic Hot Springs Mathrani, Indra M. Nielsen, Peter Sonne-Hansen, Jacob Kristjánsson, Jakob K. Ahring, Birgitte K. 1993-06 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC182194 http://www.ncbi.nlm.nih.gov/pubmed/16348972 en eng http://www.ncbi.nlm.nih.gov/pmc/articles/PMC182194 http://www.ncbi.nlm.nih.gov/pubmed/16348972 Copyright © 1993, American Society for Microbiology General Microbial Ecology Text 1993 ftpubmed 2013-08-29T13:19:49Z Cellulose- and hemicellulose-degrading thermophilic anaerobes were enumerated in biomat samples of various temperatures from two different hot springs in the Hveragerǒi area of Iceland: one spring had a pH near 7, the second had a pH near 9. The most-probable-number technique was used for enumeration of bacteria in the samples, with media at many different temperatures (37 to 90°C) and two pH values (7 and 9). There were generally more xylan-degrading then cellulose-utilizing organisms in both environments. There was no growth at 80°C in the neutral spring or at 37°C in the alkaline spring. However, there were large numbers of both types of organisms in the alkaline spring at 80°C and in the neutral spring at 37°C. No cultures grew from the most-probable-number tubes inoculated with the Hveragerǒi samples and incubated at 90°C or with media at pH 9. However, xylan-degrading cultures at 70°C were enriched at pH 9 with samples from some other Icelandic hot springs. Text Iceland PubMed Central (PMC) |
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PubMed Central (PMC) |
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English |
topic |
General Microbial Ecology |
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General Microbial Ecology Mathrani, Indra M. Nielsen, Peter Sonne-Hansen, Jacob Kristjánsson, Jakob K. Ahring, Birgitte K. Influence of pH and Temperature on Enumeration of Cellulose- and Hemicellulose-Degrading Thermophilic Anaerobes in Neutral and Alkaline Icelandic Hot Springs |
topic_facet |
General Microbial Ecology |
description |
Cellulose- and hemicellulose-degrading thermophilic anaerobes were enumerated in biomat samples of various temperatures from two different hot springs in the Hveragerǒi area of Iceland: one spring had a pH near 7, the second had a pH near 9. The most-probable-number technique was used for enumeration of bacteria in the samples, with media at many different temperatures (37 to 90°C) and two pH values (7 and 9). There were generally more xylan-degrading then cellulose-utilizing organisms in both environments. There was no growth at 80°C in the neutral spring or at 37°C in the alkaline spring. However, there were large numbers of both types of organisms in the alkaline spring at 80°C and in the neutral spring at 37°C. No cultures grew from the most-probable-number tubes inoculated with the Hveragerǒi samples and incubated at 90°C or with media at pH 9. However, xylan-degrading cultures at 70°C were enriched at pH 9 with samples from some other Icelandic hot springs. |
format |
Text |
author |
Mathrani, Indra M. Nielsen, Peter Sonne-Hansen, Jacob Kristjánsson, Jakob K. Ahring, Birgitte K. |
author_facet |
Mathrani, Indra M. Nielsen, Peter Sonne-Hansen, Jacob Kristjánsson, Jakob K. Ahring, Birgitte K. |
author_sort |
Mathrani, Indra M. |
title |
Influence of pH and Temperature on Enumeration of Cellulose- and Hemicellulose-Degrading Thermophilic Anaerobes in Neutral and Alkaline Icelandic Hot Springs |
title_short |
Influence of pH and Temperature on Enumeration of Cellulose- and Hemicellulose-Degrading Thermophilic Anaerobes in Neutral and Alkaline Icelandic Hot Springs |
title_full |
Influence of pH and Temperature on Enumeration of Cellulose- and Hemicellulose-Degrading Thermophilic Anaerobes in Neutral and Alkaline Icelandic Hot Springs |
title_fullStr |
Influence of pH and Temperature on Enumeration of Cellulose- and Hemicellulose-Degrading Thermophilic Anaerobes in Neutral and Alkaline Icelandic Hot Springs |
title_full_unstemmed |
Influence of pH and Temperature on Enumeration of Cellulose- and Hemicellulose-Degrading Thermophilic Anaerobes in Neutral and Alkaline Icelandic Hot Springs |
title_sort |
influence of ph and temperature on enumeration of cellulose- and hemicellulose-degrading thermophilic anaerobes in neutral and alkaline icelandic hot springs |
publishDate |
1993 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC182194 http://www.ncbi.nlm.nih.gov/pubmed/16348972 |
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Iceland |
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Iceland |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC182194 http://www.ncbi.nlm.nih.gov/pubmed/16348972 |
op_rights |
Copyright © 1993, American Society for Microbiology |
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