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dc.contributor.authorFechtner, Joanna
dc.contributor.authorCameron, Scott
dc.contributor.authorDeeni, Yusuf Y.
dc.contributor.authorHapca, Simona M.
dc.contributor.authorKabir, Kamaluddeen
dc.contributor.authorMohammed, Ibrahim U.
dc.contributor.authorSpiers, Andrew J.
dc.date.accessioned2017-02-07T10:59:04Z
dc.date.available2017-02-07T10:59:04Z
dc.date.issued2017-01-01
dc.identifier.citationFechtner, J. et al. 2017. Limitation of biosurfactant strength produced by bacteria. In: C. R. Upton ed. Biosurfactants: Occurrences, Applications and Research. New York: Nova Science Publishers.en
dc.identifier.isbn978-1-53610-721-0
dc.identifier.urihttp://hdl.handle.net/10373/2595
dc.description.abstractBiosurfactants which reduce the surface or interfacial tension of liquids and act as emulsifiers, foaming and dispersing agents with low toxicity, are finding increasing applications in biotechnology and driving the search for novel compounds for further exploitation. Potential biosurfactants sourced from bacteria are often selected first by qualitative assessment of surface tension using simple assays such as the drop collapse technique or by quantitative tensiometry measuring air-liquid interfacial tension of cell-free culture supernatants or purified samples, and subsequently tested for appropriate physicalchemical behaviours using a range of application-specific assays. Highly active or strong biosurfactants have been reported to reduce the surface tension of water to approximately 22 – 25 mN.m-1, and show a range of behaviours determined by the choice of conditions (temperature, pH, salt concentration, etc.) used to test particular aqueous-hydrophobic (oil) mixtures. However, recent analyses of biosurfactant strengths using a predictive statistical approach (Individual distribution identification) have shown that it is unlikely that new compounds will be identified able to significantly reduce aqueous surface tensions below 24 mN.m-1. The mechanistic basis of this limit requires an explanation of why stronger compounds are not produced by bacteria, with a limitation of self-harm to producing cells probably the most likely biophysical explanation. However, behavioural analyses using a combination of emulsion, foam stability and oil-dispersion assays indicates high chemical diversity exists amongst biosurfactants exhibiting the strongest levels of activity (24 – 28 mN.m-1), suggesting that bacteria are still likely to provide a rich source of potentially novel compounds for use in biotechnology.en
dc.language.isoenen
dc.publisherNova Science Publishersen
dc.relation.ispartofBiosurfactants: Occurrences, Applications and Researchen
dc.titleLimitation of biosurfactant strength produced by bacteriaen
dc.typeBook chapteren
dc.rights.holderThis is the accepted manuscript of a book chapter, © 2017 Nova Science Publishers, which his embargoed until 1 July 2017 to comply with the publisher's self-archiving policy. The published book and chapter are available from: www.novapublishers.com/en
dc.contributor.institutionAbertay University. School of Science, Engineering and Technologyen
dc.type.statuspublisheden
dc.type.refereedpeer-revieweden
dc.type.versionaccepteden
dc.date.acceptance2016-10-17
rioxxterms.publicationdate2017-01-01
rioxxterms.typeBook chapteren
dcterms.dateAccepted2016-10-17
refterms.accessExceptionNAen
refterms.dateDeposit2016-11-11
refterms.dateEmbargoEnd2017-07-01
refterms.dateFCA2017-07-01
refterms.dateFCD2016-11-11
refterms.dateFreeToDownload2017-07-01
refterms.dateFreeToRead2017-07-01
refterms.dateToSearch2017-07-01
refterms.depositExceptionNAen
refterms.panelAen
refterms.technicalExceptionNAen
refterms.versionAMen


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