Comparative study between yeasts immobilized on alumina beads and on membranes prepared by two routes
Autor(a) principal: | |
---|---|
Data de Publicação: | 2003 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Brazilian Journal of Microbiology |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822003000200008 |
Resumo: | Alumina channeled beads and rough surface membranes prepared from aqueous sols of fibrillar pseudoboehmite are able to immobilize yeasts for ethanol fermentation of sugar solutions. This paper describes comparative results of assays carried out with yeasts immobilized onto alpha-alumina beads and membranes prepared under two different conditions of processing and firing. The fermentation tests evaluated by the decrease of fermentable sugars, referred as Brix degrees per hour, indicated that the yeasts immobilized on beads had similar performance, probably because their surfaces, even being morphologically different, presented the same value of open porosity. One type of membrane (asymmetrical; precursor: pseudoboehmite; firing temperature 1,150ºC; crystal structure; alpha-alumina) had better performance than the other type (asymmetrical; precursor: fibrillar pseudoboehmite plus aluminum hydroxiacetate mixture; 1,150ºC; alpha-alumina) because the yeast cells entered into their porous interior through the surface slits, were immobilized and their growth was easier than on the external surface. |
id |
SBM-1_7e51d3d532e3ea1897c8395eb5cd1e81 |
---|---|
oai_identifier_str |
oai:scielo:S1517-83822003000200008 |
network_acronym_str |
SBM-1 |
network_name_str |
Brazilian Journal of Microbiology |
repository_id_str |
|
spelling |
Comparative study between yeasts immobilized on alumina beads and on membranes prepared by two routesPorous aluminachanneled aluminaimmobilized yeastethanol productionAlumina channeled beads and rough surface membranes prepared from aqueous sols of fibrillar pseudoboehmite are able to immobilize yeasts for ethanol fermentation of sugar solutions. This paper describes comparative results of assays carried out with yeasts immobilized onto alpha-alumina beads and membranes prepared under two different conditions of processing and firing. The fermentation tests evaluated by the decrease of fermentable sugars, referred as Brix degrees per hour, indicated that the yeasts immobilized on beads had similar performance, probably because their surfaces, even being morphologically different, presented the same value of open porosity. One type of membrane (asymmetrical; precursor: pseudoboehmite; firing temperature 1,150ºC; crystal structure; alpha-alumina) had better performance than the other type (asymmetrical; precursor: fibrillar pseudoboehmite plus aluminum hydroxiacetate mixture; 1,150ºC; alpha-alumina) because the yeast cells entered into their porous interior through the surface slits, were immobilized and their growth was easier than on the external surface.Sociedade Brasileira de Microbiologia2003-06-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822003000200008Brazilian Journal of Microbiology v.34 n.2 2003reponame:Brazilian Journal of Microbiologyinstname:Sociedade Brasileira de Microbiologia (SBM)instacron:SBM10.1590/S1517-83822003000200008info:eu-repo/semantics/openAccessKiyohara,Pedro K.Lima,Urgel de AlmeidaSantos,Helena de SouzaSantos,Persio de Souzaeng2004-01-12T00:00:00Zoai:scielo:S1517-83822003000200008Revistahttps://www.scielo.br/j/bjm/ONGhttps://old.scielo.br/oai/scielo-oai.phpbjm@sbmicrobiologia.org.br||mbmartin@usp.br1678-44051517-8382opendoar:2004-01-12T00:00Brazilian Journal of Microbiology - Sociedade Brasileira de Microbiologia (SBM)false |
dc.title.none.fl_str_mv |
Comparative study between yeasts immobilized on alumina beads and on membranes prepared by two routes |
title |
Comparative study between yeasts immobilized on alumina beads and on membranes prepared by two routes |
spellingShingle |
Comparative study between yeasts immobilized on alumina beads and on membranes prepared by two routes Kiyohara,Pedro K. Porous alumina channeled alumina immobilized yeast ethanol production |
title_short |
Comparative study between yeasts immobilized on alumina beads and on membranes prepared by two routes |
title_full |
Comparative study between yeasts immobilized on alumina beads and on membranes prepared by two routes |
title_fullStr |
Comparative study between yeasts immobilized on alumina beads and on membranes prepared by two routes |
title_full_unstemmed |
Comparative study between yeasts immobilized on alumina beads and on membranes prepared by two routes |
title_sort |
Comparative study between yeasts immobilized on alumina beads and on membranes prepared by two routes |
author |
Kiyohara,Pedro K. |
author_facet |
Kiyohara,Pedro K. Lima,Urgel de Almeida Santos,Helena de Souza Santos,Persio de Souza |
author_role |
author |
author2 |
Lima,Urgel de Almeida Santos,Helena de Souza Santos,Persio de Souza |
author2_role |
author author author |
dc.contributor.author.fl_str_mv |
Kiyohara,Pedro K. Lima,Urgel de Almeida Santos,Helena de Souza Santos,Persio de Souza |
dc.subject.por.fl_str_mv |
Porous alumina channeled alumina immobilized yeast ethanol production |
topic |
Porous alumina channeled alumina immobilized yeast ethanol production |
description |
Alumina channeled beads and rough surface membranes prepared from aqueous sols of fibrillar pseudoboehmite are able to immobilize yeasts for ethanol fermentation of sugar solutions. This paper describes comparative results of assays carried out with yeasts immobilized onto alpha-alumina beads and membranes prepared under two different conditions of processing and firing. The fermentation tests evaluated by the decrease of fermentable sugars, referred as Brix degrees per hour, indicated that the yeasts immobilized on beads had similar performance, probably because their surfaces, even being morphologically different, presented the same value of open porosity. One type of membrane (asymmetrical; precursor: pseudoboehmite; firing temperature 1,150ºC; crystal structure; alpha-alumina) had better performance than the other type (asymmetrical; precursor: fibrillar pseudoboehmite plus aluminum hydroxiacetate mixture; 1,150ºC; alpha-alumina) because the yeast cells entered into their porous interior through the surface slits, were immobilized and their growth was easier than on the external surface. |
publishDate |
2003 |
dc.date.none.fl_str_mv |
2003-06-01 |
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=S1517-83822003000200008 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822003000200008 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/S1517-83822003000200008 |
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 |
Sociedade Brasileira de Microbiologia |
publisher.none.fl_str_mv |
Sociedade Brasileira de Microbiologia |
dc.source.none.fl_str_mv |
Brazilian Journal of Microbiology v.34 n.2 2003 reponame:Brazilian Journal of Microbiology instname:Sociedade Brasileira de Microbiologia (SBM) instacron:SBM |
instname_str |
Sociedade Brasileira de Microbiologia (SBM) |
instacron_str |
SBM |
institution |
SBM |
reponame_str |
Brazilian Journal of Microbiology |
collection |
Brazilian Journal of Microbiology |
repository.name.fl_str_mv |
Brazilian Journal of Microbiology - Sociedade Brasileira de Microbiologia (SBM) |
repository.mail.fl_str_mv |
bjm@sbmicrobiologia.org.br||mbmartin@usp.br |
_version_ |
1752122199623335936 |