Bioconversion of waste cooking oil glycerol from cabbage extract to lactic acid by Rhizopus microsporus

Detalhes bibliográficos
Autor(a) principal: Yuwa-amornpitak,Thalisa
Data de Publicação: 2018
Outros Autores: Chookietwatana,Kannika
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=S1517-83822018000500178
Resumo: Abstract Glycerol from spent oil was processed by transesterification for biodiesel production. Although glycerol contains many types of impurities, it can be used as a C-source for lactic acid production by fungi, such as Rhizopus microsporus. In this study, we found that wild type R. microsporus (LTH23) produced more lactic acid than the mutant strains on cabbage glycerol media (CG media). More lactic acid was produced on CG media than on cabbage extract media (C media) by about two-fold in batch fermentation conditions. In addition, we found that lactic acid production in a fed-batch process was also slightly higher than in a batch process. To study the combined effects of pH, urea, and glycerol waste concentration on lactic acid production, a response surface methodology was used. The optimum pH, urea, and glycerol waste concentrations were pH 6.5, 3.75 g/L, and 17 g/L, respectively. The maximum lactic acid production predicted by this equation model was 4.03 g/L.
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spelling Bioconversion of waste cooking oil glycerol from cabbage extract to lactic acid by Rhizopus microsporusLactic acidWaste cooking oil glycerolRhizopus microsporusAbstract Glycerol from spent oil was processed by transesterification for biodiesel production. Although glycerol contains many types of impurities, it can be used as a C-source for lactic acid production by fungi, such as Rhizopus microsporus. In this study, we found that wild type R. microsporus (LTH23) produced more lactic acid than the mutant strains on cabbage glycerol media (CG media). More lactic acid was produced on CG media than on cabbage extract media (C media) by about two-fold in batch fermentation conditions. In addition, we found that lactic acid production in a fed-batch process was also slightly higher than in a batch process. To study the combined effects of pH, urea, and glycerol waste concentration on lactic acid production, a response surface methodology was used. The optimum pH, urea, and glycerol waste concentrations were pH 6.5, 3.75 g/L, and 17 g/L, respectively. The maximum lactic acid production predicted by this equation model was 4.03 g/L.Sociedade Brasileira de Microbiologia2018-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822018000500178Brazilian Journal of Microbiology v.49 suppl.1 2018reponame:Brazilian Journal of Microbiologyinstname:Sociedade Brasileira de Microbiologia (SBM)instacron:SBM10.1016/j.bjm.2018.06.007info:eu-repo/semantics/openAccessYuwa-amornpitak,ThalisaChookietwatana,Kannikaeng2018-11-29T00:00:00Zoai:scielo:S1517-83822018000500178Revistahttps://www.scielo.br/j/bjm/ONGhttps://old.scielo.br/oai/scielo-oai.phpbjm@sbmicrobiologia.org.br||mbmartin@usp.br1678-44051517-8382opendoar:2018-11-29T00:00Brazilian Journal of Microbiology - Sociedade Brasileira de Microbiologia (SBM)false
dc.title.none.fl_str_mv Bioconversion of waste cooking oil glycerol from cabbage extract to lactic acid by Rhizopus microsporus
title Bioconversion of waste cooking oil glycerol from cabbage extract to lactic acid by Rhizopus microsporus
spellingShingle Bioconversion of waste cooking oil glycerol from cabbage extract to lactic acid by Rhizopus microsporus
Yuwa-amornpitak,Thalisa
Lactic acid
Waste cooking oil glycerol
Rhizopus microsporus
title_short Bioconversion of waste cooking oil glycerol from cabbage extract to lactic acid by Rhizopus microsporus
title_full Bioconversion of waste cooking oil glycerol from cabbage extract to lactic acid by Rhizopus microsporus
title_fullStr Bioconversion of waste cooking oil glycerol from cabbage extract to lactic acid by Rhizopus microsporus
title_full_unstemmed Bioconversion of waste cooking oil glycerol from cabbage extract to lactic acid by Rhizopus microsporus
title_sort Bioconversion of waste cooking oil glycerol from cabbage extract to lactic acid by Rhizopus microsporus
author Yuwa-amornpitak,Thalisa
author_facet Yuwa-amornpitak,Thalisa
Chookietwatana,Kannika
author_role author
author2 Chookietwatana,Kannika
author2_role author
dc.contributor.author.fl_str_mv Yuwa-amornpitak,Thalisa
Chookietwatana,Kannika
dc.subject.por.fl_str_mv Lactic acid
Waste cooking oil glycerol
Rhizopus microsporus
topic Lactic acid
Waste cooking oil glycerol
Rhizopus microsporus
description Abstract Glycerol from spent oil was processed by transesterification for biodiesel production. Although glycerol contains many types of impurities, it can be used as a C-source for lactic acid production by fungi, such as Rhizopus microsporus. In this study, we found that wild type R. microsporus (LTH23) produced more lactic acid than the mutant strains on cabbage glycerol media (CG media). More lactic acid was produced on CG media than on cabbage extract media (C media) by about two-fold in batch fermentation conditions. In addition, we found that lactic acid production in a fed-batch process was also slightly higher than in a batch process. To study the combined effects of pH, urea, and glycerol waste concentration on lactic acid production, a response surface methodology was used. The optimum pH, urea, and glycerol waste concentrations were pH 6.5, 3.75 g/L, and 17 g/L, respectively. The maximum lactic acid production predicted by this equation model was 4.03 g/L.
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=S1517-83822018000500178
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822018000500178
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1016/j.bjm.2018.06.007
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.49 suppl.1 2018
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
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