Enzyme Detection and Metabolic Process Tracking of Ethanol Fermentation by a Natural Alginate Fermentation Strain
Autor(a) principal: | |
---|---|
Data de Publicação: | 2018 |
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=S1516-89132018000100201 |
Resumo: | ABSTRACT Alginate is a major component of brown algae, but it cannot be utilized for ethanol fermentation by industrial microorganisms. A natural alginate degrading and ethanol producing strain was obtained in our previous research. However, the research on the ethanol metabolism process of the natural alginate fermentation strain is lacked. In this research, the key enzyme and metabolic process of ethanol fermentation were studied. Three kinds of key enzyme including alginate lyase, pyruvate dehydrogenase and ethanol dehydrogenase were determined. The enzyme activity in the metabolic process was relatively high at 60-96 h which was the most important period during the fermentation. Meanwhile the concentration change of the important substances including soluble sugar, reducing sugar, acidity, pyruvic acid and ethanol were tracked and analyzed. Total soluble sugar and reducing sugar change tendency during the fermentation was similar. In the whole fermentation process, the fermentation broth was acidic. The value of pyruvic acid content reached highest at 72 h. During 48-96 h, the growth of ethanol concentration was very obvious. The alginate metabolic process in natural alginate fermentation strain was to generate extracellular alginate lyase to degrade alginate to produce reducing sugar, and then some intermediate metabolites formed such as pyruvic acid. Finally under the effect of pyruvate dehydrogenase and ethanol dehydrogenase, ethanol was produced. |
id |
TECPAR-1_17ff048a4ad7422856732a879a6628fb |
---|---|
oai_identifier_str |
oai:scielo:S1516-89132018000100201 |
network_acronym_str |
TECPAR-1 |
network_name_str |
Brazilian Archives of Biology and Technology |
repository_id_str |
|
spelling |
Enzyme Detection and Metabolic Process Tracking of Ethanol Fermentation by a Natural Alginate Fermentation StrainAlginate fermentation strainBrown algaeEthanol metabolism processABSTRACT Alginate is a major component of brown algae, but it cannot be utilized for ethanol fermentation by industrial microorganisms. A natural alginate degrading and ethanol producing strain was obtained in our previous research. However, the research on the ethanol metabolism process of the natural alginate fermentation strain is lacked. In this research, the key enzyme and metabolic process of ethanol fermentation were studied. Three kinds of key enzyme including alginate lyase, pyruvate dehydrogenase and ethanol dehydrogenase were determined. The enzyme activity in the metabolic process was relatively high at 60-96 h which was the most important period during the fermentation. Meanwhile the concentration change of the important substances including soluble sugar, reducing sugar, acidity, pyruvic acid and ethanol were tracked and analyzed. Total soluble sugar and reducing sugar change tendency during the fermentation was similar. In the whole fermentation process, the fermentation broth was acidic. The value of pyruvic acid content reached highest at 72 h. During 48-96 h, the growth of ethanol concentration was very obvious. The alginate metabolic process in natural alginate fermentation strain was to generate extracellular alginate lyase to degrade alginate to produce reducing sugar, and then some intermediate metabolites formed such as pyruvic acid. Finally under the effect of pyruvate dehydrogenase and ethanol dehydrogenase, ethanol was produced.Instituto de Tecnologia do Paraná - Tecpar2018-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132018000100201Brazilian Archives of Biology and Technology v.61 2018reponame:Brazilian Archives of Biology and Technologyinstname:Instituto de Tecnologia do Paraná (Tecpar)instacron:TECPAR10.1590/1678-4324-2018160418info:eu-repo/semantics/openAccessZhang,WenRen,XiaohuiBao,Liyineng2018-11-07T00:00:00Zoai:scielo:S1516-89132018000100201Revistahttps://www.scielo.br/j/babt/https://old.scielo.br/oai/scielo-oai.phpbabt@tecpar.br||babt@tecpar.br1678-43241516-8913opendoar:2018-11-07T00:00Brazilian Archives of Biology and Technology - Instituto de Tecnologia do Paraná (Tecpar)false |
dc.title.none.fl_str_mv |
Enzyme Detection and Metabolic Process Tracking of Ethanol Fermentation by a Natural Alginate Fermentation Strain |
title |
Enzyme Detection and Metabolic Process Tracking of Ethanol Fermentation by a Natural Alginate Fermentation Strain |
spellingShingle |
Enzyme Detection and Metabolic Process Tracking of Ethanol Fermentation by a Natural Alginate Fermentation Strain Zhang,Wen Alginate fermentation strain Brown algae Ethanol metabolism process |
title_short |
Enzyme Detection and Metabolic Process Tracking of Ethanol Fermentation by a Natural Alginate Fermentation Strain |
title_full |
Enzyme Detection and Metabolic Process Tracking of Ethanol Fermentation by a Natural Alginate Fermentation Strain |
title_fullStr |
Enzyme Detection and Metabolic Process Tracking of Ethanol Fermentation by a Natural Alginate Fermentation Strain |
title_full_unstemmed |
Enzyme Detection and Metabolic Process Tracking of Ethanol Fermentation by a Natural Alginate Fermentation Strain |
title_sort |
Enzyme Detection and Metabolic Process Tracking of Ethanol Fermentation by a Natural Alginate Fermentation Strain |
author |
Zhang,Wen |
author_facet |
Zhang,Wen Ren,Xiaohui Bao,Liyin |
author_role |
author |
author2 |
Ren,Xiaohui Bao,Liyin |
author2_role |
author author |
dc.contributor.author.fl_str_mv |
Zhang,Wen Ren,Xiaohui Bao,Liyin |
dc.subject.por.fl_str_mv |
Alginate fermentation strain Brown algae Ethanol metabolism process |
topic |
Alginate fermentation strain Brown algae Ethanol metabolism process |
description |
ABSTRACT Alginate is a major component of brown algae, but it cannot be utilized for ethanol fermentation by industrial microorganisms. A natural alginate degrading and ethanol producing strain was obtained in our previous research. However, the research on the ethanol metabolism process of the natural alginate fermentation strain is lacked. In this research, the key enzyme and metabolic process of ethanol fermentation were studied. Three kinds of key enzyme including alginate lyase, pyruvate dehydrogenase and ethanol dehydrogenase were determined. The enzyme activity in the metabolic process was relatively high at 60-96 h which was the most important period during the fermentation. Meanwhile the concentration change of the important substances including soluble sugar, reducing sugar, acidity, pyruvic acid and ethanol were tracked and analyzed. Total soluble sugar and reducing sugar change tendency during the fermentation was similar. In the whole fermentation process, the fermentation broth was acidic. The value of pyruvic acid content reached highest at 72 h. During 48-96 h, the growth of ethanol concentration was very obvious. The alginate metabolic process in natural alginate fermentation strain was to generate extracellular alginate lyase to degrade alginate to produce reducing sugar, and then some intermediate metabolites formed such as pyruvic acid. Finally under the effect of pyruvate dehydrogenase and ethanol dehydrogenase, ethanol was produced. |
publishDate |
2018 |
dc.date.none.fl_str_mv |
2018-01-01 |
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=S1516-89132018000100201 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132018000100201 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/1678-4324-2018160418 |
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.61 2018 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_ |
1750318278251642880 |