Aeration effect on Spirulina platensis growth and γ-linolenic acid production

Detalhes bibliográficos
Autor(a) principal: Ronda,Srinivasa Reddy
Data de Publicação: 2012
Outros Autores: Bokka,Chandra Sekhar, Ketineni,Chandrika, Rijal,Binod, Allu,Prasada Rao
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