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https://hdl.handle.net/1822/33280
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Campo DC | Valor | Idioma |
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dc.contributor.author | Gudiña, Eduardo J. | por |
dc.contributor.author | Rodrigues, A. I. | por |
dc.contributor.author | Alves, Eliana | por |
dc.contributor.author | Domingues, M. R. M. | por |
dc.contributor.author | Teixeira, J. A. | por |
dc.contributor.author | Rodrigues, L. R. | por |
dc.date.accessioned | 2015-01-27T19:25:30Z | - |
dc.date.available | 2015-01-27T19:25:30Z | - |
dc.date.issued | 2015-02 | - |
dc.identifier.citation | Gudiña, Eduardo J.; Rodrigues, A. I.; Alves, Eliana; Domingues, M. Rosário; Teixeira, J. A.; Rodrigues, L. R., Bioconversion of agro-industrial by-products in rhamnolipids towards applications in enhanced oil recovery and bioremediation. Bioresource Technology, 177, 87-93, 2015 | por |
dc.identifier.issn | 0960-8524 | por |
dc.identifier.uri | https://hdl.handle.net/1822/33280 | - |
dc.description.abstract | In this work, biosurfactant production by a Pseudomonas aeruginosa strain was optimized using low-cost substrates. The highest biosurfactant production (3.2 g/l) was obtained using a culture medium containing corn step liquor (10% (v/v)) and molasses (10% (w/v)). The biosurfactant reduced the surface tension of water up to 30 mN/m, and exhibited a high emulsifying activity (E24= 60%), with a critical micelle concentration as low as 50 mg/l. The biosurfactant produced in this alternative medium was characterized as a mixture of eight different rhamnolipid congeners, being the most abundant the mono-rhamnolipid Rha-C10-C10. However, using LB medium, nine different rhamnolipid congeners were identified, being the most abundant the di-rhamnolipid Rha-Rha-C10-C10. The rhamnolipid mixture produced in the alternative medium exhibited a better performance in removing oil from contaminated sand when compared with two chemical surfactants, suggesting its potential use as an alternative to traditional chemical surfactants in enhanced oil recovery or bioremediation. | por |
dc.description.sponsorship | The authors acknowledge the financial support from the Strategic Project PEst-OE/EQB/LA0023/2013, NORTE-07-0124-FEDER-000028, NORTE-07-0124-FEDER-000027, QOPNA research unit (project PEst-C/QUI/UI0062/2013; FCOMP-01-0124-FEDER037296) and the Portuguese National Mass Spectrometry Network, RNEM (REDE/1504/REM/2005) funded by Fundacao para a Ciencia e a Tecnologia (FCT, Portugal), and from AdI (Agencia de Inovacao, S.A.), through the project BIOCLEAN - "Development of biosurfactant- based products for surfaces cleaning and disinfection in the food industry'' (QREN Ref. 30215). Eliana Alves is also grateful to FCT for her post-doctoral grant (BPD/UI51/5441/2014) supported by the project REDE/1504/REM/2005. | por |
dc.language.iso | eng | por |
dc.publisher | Elsevier B.V. | por |
dc.rights | openAccess | por |
dc.subject | Rhamnolipid | por |
dc.subject | Pseudomonas aeruginosa | por |
dc.subject | Molasses | por |
dc.subject | Corn step liquor | por |
dc.subject | Enhanced oil recovery | por |
dc.subject | Bioremediation | por |
dc.subject | Corn steep liquor | por |
dc.title | Bioconversion of agro-industrial by-products in rhamnolipids toward applications in enhanced oil recovery and bioremediation | por |
dc.type | article | - |
dc.peerreviewed | yes | por |
dc.relation.publisherversion | http://www.journals.elsevier.com/bioresource-technology/ | por |
dc.comments | CEB19361 | por |
sdum.publicationstatus | published | por |
oaire.citationStartPage | 87 | por |
oaire.citationEndPage | 93 | por |
oaire.citationConferencePlace | Netherlands | - |
oaire.citationTitle | Bioresource Technology | por |
oaire.citationVolume | 177 | por |
dc.date.updated | 2015-01-27T18:58:46Z | - |
dc.identifier.eissn | 0960-8524 | - |
dc.identifier.doi | 10.1016/j.biortech.2014.11.069 | por |
dc.identifier.pmid | 25479398 | por |
dc.subject.wos | Science & Technology | por |
sdum.journal | Bioresource Technology | por |
Aparece nas coleções: | CEB - Publicações em Revistas/Séries Internacionais / Publications in International Journals/Series |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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document_19361_1.pdf | 736,55 kB | Adobe PDF | Ver/Abrir |