Repository logo
 
Publication

Jerusalem artichoke as low-cost fructose-rich feedstock for fossil fuels desulphurization by a fructophilic bacterium

2015Journal article Open access
Simple item page
dc.contributor.authorSilva, Tiago
dc.contributor.authorPaixão, Susana M.
dc.contributor.authorRoseiro, J. Carlos
dc.contributor.authorAlves, Luís
dc.date.accessioned2016-03-23T15:27:23Z
dc.date.available2016-03-23T15:27:23Z
dc.date.issued2015
dc.description.abstractAims: Through biodesulphurization (BDS) is possible to remove the sulphur present in fossil fuels to carry out the very strict legislation. However, this biological process is limited by the cost of the culture medium, and thus, it is important to explore cheaper alternative carbon sources, such as Jerusalem artichoke (JA). These carbon sources usually contain sulphates which interfere with the BDS process. The goal of this work was to remove the sulphates from Jerusalem artichoke juice (JAJ) through BaCl2 precipitation viewing the optimization of dibenzothiophene (DBT) desulphurization by Gordonia alkanivorans strain 1B. Methods and Results: Using a statistical design (Doehlert distribution), the effect of BaCl2 concentration (0·125–0·625%) and pH (5–9) was studied on sulphate concentration in hydrolysed JAJ. A validated surface response derived from data indicated that zero sulphates can be achieved with 0·5–0·55% (w/v) BaCl2 at pH 7; however, parallel BDS assays showed that the highest desulphurization was obtained with the juice treated with 0·5% (w/v) BaCl2 at pH 8·73. Further assays demonstrated that enhanced DBT desulphurization was achieved using hydrolysed JAJ treated in these optimal conditions. A total conversion of 400 µmol l-1 DBT into 2-hydroxybiphenyl (2-HBP) in <90 h was observed, attaining a 2-HBP maximum production rate of 28·2 µmol l-1 h-1 and a specific production rate of 5·06 µmol-1 g-1(DCW) h-1. Conclusions: These results highlight the efficacy of the treatment applied to JAJ in making this agromaterial a promising low-cost renewable feedstock for improved BDS by the fructophilic strain 1B. Significance and Impact of the Study: This study is a fundamental step viewing BDS application at the industrial level as it accounts a cost-effective production of the biocatalysts, one of the main drawbacks for BDS scale-up.pt_PT
dc.identifier.citationSilva, T.P.; Paixão, S.M.; Roseiro, J.C.; Alves, L. - Jerusalem artichoke as low-cost fructose-rich feedstock for fossil fuels desulphurization by a fructophilic bacterium. In: Journal of Applied Microbiology, 2015, Vol. 118, nº 7 , p. 609-618pt_PT
dc.identifier.doi10.1111/jam.12721pt_PT
dc.identifier.issn1364-5072
dc.identifier.urihttp://hdl.handle.net/10400.9/2899
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherWileypt_PT
dc.relation.publisherversionhttp://dx.doi.org/10.1111/jam.12721pt_PT
dc.subjectBiodesulfurizationpt_PT
dc.subjectFructophilic bacteriumpt_PT
dc.subjectGordonia alkanivoranspt_PT
dc.subjectJerusalem artichokept_PT
dc.subjectSulphate removalpt_PT
dc.titleJerusalem artichoke as low-cost fructose-rich feedstock for fossil fuels desulphurization by a fructophilic bacteriumpt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage618pt_PT
oaire.citation.startPage609pt_PT
oaire.citation.titleJournal of Applied Microbiologypt_PT
oaire.citation.volume118pt_PT
person.familyNameSilva
person.familyNamePaixão
person.familyNameRoseiro
person.familyNameAlves
person.givenNameTiago
person.givenNameSusana M.
person.givenNameJosé
person.givenNameLuís
person.identifier.ciencia-idE418-9EE4-9BB4
person.identifier.ciencia-id7918-C133-C5FB
person.identifier.ciencia-idDA18-CA15-76B7
person.identifier.ciencia-id561B-53A5-7359
person.identifier.orcid0000-0003-0120-557X
person.identifier.orcid0000-0003-0955-4467
person.identifier.orcid0000-0003-3119-6416
person.identifier.orcid0000-0001-6245-775X
person.identifier.ridF-5453-2019
person.identifier.scopus-author-id6603112228
person.identifier.scopus-author-id7004090071
person.identifier.scopus-author-id6701310833
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublication4c11e382-9f04-42cc-9ca0-a4ade44298f1
relation.isAuthorOfPublicationb763d40e-827e-4b6b-949c-d6c8a7166cc5
relation.isAuthorOfPublicatione1aa2856-62bc-46dd-9922-9727b1158981
relation.isAuthorOfPublicationc07d7af9-191c-4bcc-af5f-255b7fb52060
relation.isAuthorOfPublication.latestForDiscovery4c11e382-9f04-42cc-9ca0-a4ade44298f1

Files

Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
JournalAppliedMicrobiology_Vol.118_609.pdf
Size:
86.06 KB
Format:
Adobe Portable Document Format
Download
License bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
license.txt
Size:
1.71 KB
Format:
Item-specific license agreed upon to submission
Description:
Download

Collections

UB - Artigos em revistas internacionais