Aeration effect on Spirulina platensis growth and γ-linolenic acid production
Autor(a) principal: | |
---|---|
Data de Publicação: | 2012 |
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=S1517-83822012000100002 |
Resumo: | The influence of aeration on algal growth and gamma-linolenic acid (GLA) production in a bubble column photobioreactor was investigated. Studies were performed in a 20-L reactor at different aeration rates (0.2-2.5 vvm). Static, continuous, and periodic operation of air resulted in 41.9%, 88.4%, and 108% air saturation of dissolved oxygen, for which the corresponding values of GLA were 2.3, 6.5, and 7.5 mg·g-1 dry cell weight, respectively. An increase in the aeration rate from 0.2 to 2.5 vvm enhanced both the specific growth rate and GLA content under periodic sparging in the bicarbonate medium. With a 6-fold increase in the aeration rate, the GLA content of the alga increased by 69.64% (5.6-9.5 mg· g-1 dry cell weight). In addition, the total fatty acid (TFA) content in dry biomass increased from 2.22% to 4.41%, whereas the algae maintained a constant GLA to TFA ratio within the aeration rate tested. The dependence of GLA production on the aeration rate was explained by interrelating the GLA production rate with the specific growth rate using the Luedeking and Piret mixed growth model. |
id |
SBM-1_7725a1b528a1f9cba6dd66c9bb2b99e8 |
---|---|
oai_identifier_str |
oai:scielo:S1517-83822012000100002 |
network_acronym_str |
SBM-1 |
network_name_str |
Brazilian Journal of Microbiology |
repository_id_str |
|
spelling |
Aeration effect on Spirulina platensis growth and γ-linolenic acid productionSpirulina platensisAerationPhotobioreactorGamma-linolenic acidThe influence of aeration on algal growth and gamma-linolenic acid (GLA) production in a bubble column photobioreactor was investigated. Studies were performed in a 20-L reactor at different aeration rates (0.2-2.5 vvm). Static, continuous, and periodic operation of air resulted in 41.9%, 88.4%, and 108% air saturation of dissolved oxygen, for which the corresponding values of GLA were 2.3, 6.5, and 7.5 mg·g-1 dry cell weight, respectively. An increase in the aeration rate from 0.2 to 2.5 vvm enhanced both the specific growth rate and GLA content under periodic sparging in the bicarbonate medium. With a 6-fold increase in the aeration rate, the GLA content of the alga increased by 69.64% (5.6-9.5 mg· g-1 dry cell weight). In addition, the total fatty acid (TFA) content in dry biomass increased from 2.22% to 4.41%, whereas the algae maintained a constant GLA to TFA ratio within the aeration rate tested. The dependence of GLA production on the aeration rate was explained by interrelating the GLA production rate with the specific growth rate using the Luedeking and Piret mixed growth model.Sociedade Brasileira de Microbiologia2012-03-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822012000100002Brazilian Journal of Microbiology v.43 n.1 2012reponame:Brazilian Journal of Microbiologyinstname:Sociedade Brasileira de Microbiologia (SBM)instacron:SBM10.1590/S1517-83822012000100002info:eu-repo/semantics/openAccessRonda,Srinivasa ReddyBokka,Chandra SekharKetineni,ChandrikaRijal,BinodAllu,Prasada Raoeng2012-05-02T00:00:00Zoai:scielo:S1517-83822012000100002Revistahttps://www.scielo.br/j/bjm/ONGhttps://old.scielo.br/oai/scielo-oai.phpbjm@sbmicrobiologia.org.br||mbmartin@usp.br1678-44051517-8382opendoar:2012-05-02T00:00Brazilian Journal of Microbiology - Sociedade Brasileira de Microbiologia (SBM)false |
dc.title.none.fl_str_mv |
Aeration effect on Spirulina platensis growth and γ-linolenic acid production |
title |
Aeration effect on Spirulina platensis growth and γ-linolenic acid production |
spellingShingle |
Aeration effect on Spirulina platensis growth and γ-linolenic acid production Ronda,Srinivasa Reddy Spirulina platensis Aeration Photobioreactor Gamma-linolenic acid |
title_short |
Aeration effect on Spirulina platensis growth and γ-linolenic acid production |
title_full |
Aeration effect on Spirulina platensis growth and γ-linolenic acid production |
title_fullStr |
Aeration effect on Spirulina platensis growth and γ-linolenic acid production |
title_full_unstemmed |
Aeration effect on Spirulina platensis growth and γ-linolenic acid production |
title_sort |
Aeration effect on Spirulina platensis growth and γ-linolenic acid production |
author |
Ronda,Srinivasa Reddy |
author_facet |
Ronda,Srinivasa Reddy Bokka,Chandra Sekhar Ketineni,Chandrika Rijal,Binod Allu,Prasada Rao |
author_role |
author |
author2 |
Bokka,Chandra Sekhar Ketineni,Chandrika Rijal,Binod Allu,Prasada Rao |
author2_role |
author author author author |
dc.contributor.author.fl_str_mv |
Ronda,Srinivasa Reddy Bokka,Chandra Sekhar Ketineni,Chandrika Rijal,Binod Allu,Prasada Rao |
dc.subject.por.fl_str_mv |
Spirulina platensis Aeration Photobioreactor Gamma-linolenic acid |
topic |
Spirulina platensis Aeration Photobioreactor Gamma-linolenic acid |
description |
The influence of aeration on algal growth and gamma-linolenic acid (GLA) production in a bubble column photobioreactor was investigated. Studies were performed in a 20-L reactor at different aeration rates (0.2-2.5 vvm). Static, continuous, and periodic operation of air resulted in 41.9%, 88.4%, and 108% air saturation of dissolved oxygen, for which the corresponding values of GLA were 2.3, 6.5, and 7.5 mg·g-1 dry cell weight, respectively. An increase in the aeration rate from 0.2 to 2.5 vvm enhanced both the specific growth rate and GLA content under periodic sparging in the bicarbonate medium. With a 6-fold increase in the aeration rate, the GLA content of the alga increased by 69.64% (5.6-9.5 mg· g-1 dry cell weight). In addition, the total fatty acid (TFA) content in dry biomass increased from 2.22% to 4.41%, whereas the algae maintained a constant GLA to TFA ratio within the aeration rate tested. The dependence of GLA production on the aeration rate was explained by interrelating the GLA production rate with the specific growth rate using the Luedeking and Piret mixed growth model. |
publishDate |
2012 |
dc.date.none.fl_str_mv |
2012-03-01 |
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=S1517-83822012000100002 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822012000100002 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/S1517-83822012000100002 |
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.43 n.1 2012 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_ |
1752122204263284736 |