Optimization of levan production by Zymomonas mobilis
Autor(a) principal: | |
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Data de Publicação: | 1999 |
Outros Autores: | |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Brazilian Archives of Biology and Technology |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89131999000300004 |
Resumo: | Effect of different fermentation conditions on levan production by Zymomonas mobilis B-4286 was studied. Levan production increased from 5.7-g/l to 12.6-g/l with an increase in initial sucrose concentration (50-150 g/l). Above 15% (20 and 25%) sucrose concentration, there was no increase in the biomass. The sucrose hydrolysis and levan production occurred even in the absence of significant growth of cells. Maximum amount of levan was produced (14.5 g/l) at pH 5 and 15 g /l at 25(0)C temperature. At temperature between 35(0)C and 40(0)C, levan production was not detected. Presence of glucose in the medium considerably reduced levan production (2.8 g/l) than fructose 6.7g/l. |
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Brazilian Archives of Biology and Technology |
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Optimization of levan production by Zymomonas mobilisLevanLevansucraseSucraseZymomonas mobilisEffect of different fermentation conditions on levan production by Zymomonas mobilis B-4286 was studied. Levan production increased from 5.7-g/l to 12.6-g/l with an increase in initial sucrose concentration (50-150 g/l). Above 15% (20 and 25%) sucrose concentration, there was no increase in the biomass. The sucrose hydrolysis and levan production occurred even in the absence of significant growth of cells. Maximum amount of levan was produced (14.5 g/l) at pH 5 and 15 g /l at 25(0)C temperature. At temperature between 35(0)C and 40(0)C, levan production was not detected. Presence of glucose in the medium considerably reduced levan production (2.8 g/l) than fructose 6.7g/l.Instituto de Tecnologia do Paraná - Tecpar1999-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89131999000300004Brazilian Archives of Biology and Technology v.42 n.3 1999reponame:Brazilian Archives of Biology and Technologyinstname:Instituto de Tecnologia do Paraná (Tecpar)instacron:TECPAR10.1590/S1516-89131999000300004info:eu-repo/semantics/openAccessAnanthalakshmy,V. KGunasekaran,Peng2011-06-01T00:00:00Zoai:scielo:S1516-89131999000300004Revistahttps://www.scielo.br/j/babt/https://old.scielo.br/oai/scielo-oai.phpbabt@tecpar.br||babt@tecpar.br1678-43241516-8913opendoar:2011-06-01T00:00Brazilian Archives of Biology and Technology - Instituto de Tecnologia do Paraná (Tecpar)false |
dc.title.none.fl_str_mv |
Optimization of levan production by Zymomonas mobilis |
title |
Optimization of levan production by Zymomonas mobilis |
spellingShingle |
Optimization of levan production by Zymomonas mobilis Ananthalakshmy,V. K Levan Levansucrase Sucrase Zymomonas mobilis |
title_short |
Optimization of levan production by Zymomonas mobilis |
title_full |
Optimization of levan production by Zymomonas mobilis |
title_fullStr |
Optimization of levan production by Zymomonas mobilis |
title_full_unstemmed |
Optimization of levan production by Zymomonas mobilis |
title_sort |
Optimization of levan production by Zymomonas mobilis |
author |
Ananthalakshmy,V. K |
author_facet |
Ananthalakshmy,V. K Gunasekaran,P |
author_role |
author |
author2 |
Gunasekaran,P |
author2_role |
author |
dc.contributor.author.fl_str_mv |
Ananthalakshmy,V. K Gunasekaran,P |
dc.subject.por.fl_str_mv |
Levan Levansucrase Sucrase Zymomonas mobilis |
topic |
Levan Levansucrase Sucrase Zymomonas mobilis |
description |
Effect of different fermentation conditions on levan production by Zymomonas mobilis B-4286 was studied. Levan production increased from 5.7-g/l to 12.6-g/l with an increase in initial sucrose concentration (50-150 g/l). Above 15% (20 and 25%) sucrose concentration, there was no increase in the biomass. The sucrose hydrolysis and levan production occurred even in the absence of significant growth of cells. Maximum amount of levan was produced (14.5 g/l) at pH 5 and 15 g /l at 25(0)C temperature. At temperature between 35(0)C and 40(0)C, levan production was not detected. Presence of glucose in the medium considerably reduced levan production (2.8 g/l) than fructose 6.7g/l. |
publishDate |
1999 |
dc.date.none.fl_str_mv |
1999-01-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89131999000300004 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89131999000300004 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/S1516-89131999000300004 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
text/html |
dc.publisher.none.fl_str_mv |
Instituto de Tecnologia do Paraná - Tecpar |
publisher.none.fl_str_mv |
Instituto de Tecnologia do Paraná - Tecpar |
dc.source.none.fl_str_mv |
Brazilian Archives of Biology and Technology v.42 n.3 1999 reponame:Brazilian Archives of Biology and Technology instname:Instituto de Tecnologia do Paraná (Tecpar) instacron:TECPAR |
instname_str |
Instituto de Tecnologia do Paraná (Tecpar) |
instacron_str |
TECPAR |
institution |
TECPAR |
reponame_str |
Brazilian Archives of Biology and Technology |
collection |
Brazilian Archives of Biology and Technology |
repository.name.fl_str_mv |
Brazilian Archives of Biology and Technology - Instituto de Tecnologia do Paraná (Tecpar) |
repository.mail.fl_str_mv |
babt@tecpar.br||babt@tecpar.br |
_version_ |
1750318267923169280 |