Bioconversion of waste cooking oil glycerol from cabbage extract to lactic acid by Rhizopus microsporus
Autor(a) principal: | |
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Data de Publicação: | 2018 |
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=S1517-83822018000500178 |
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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Brazilian Journal of Microbiology |
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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 |
_version_ |
1752122209890992128 |