Combined influence of ectoine and salt: spectroscopic and numerical evidence for compensating effects on aqueous solutions

dc.contributor.authorHahn, Marc Benjamin
dc.contributor.authorUhlig, Frank
dc.contributor.authorSolomun, Tihomir
dc.contributor.authorSmiatek, Jens
dc.contributor.authorSturm, Heinz
dc.date.accessioned2017-10-24T06:16:57Z
dc.date.available2017-10-24T06:16:57Z
dc.date.issued2016
dc.description.abstractEctoine is an important osmolyte, which allows microorganisms to survive in extreme environmental salinity. The hygroscopic effects of ectoine in pure water can be explained by a strong water binding behavior whereas a study on the effects of ectoine in salty solution is yet missing. We provide Raman spectroscopic evidence that the influence of ectoine and NaCl are opposing and completely independent of each other. The effect can be explained by the formation of strongly hydrogen-bonded water molecules around ectoine which compensate the influence of the salt on the water dynamics. The mechanism is corroborated by first principles calculations and broadens our understanding of zwitterionic osmolytes in aqueous solution. Our findings allow us to provide a possible explanation for the relatively high osmolyte concentrations in halotolerant bacteria.en
dc.description.sponsorshipDFG, EXC 310, Simulationstechniken
dc.description.sponsorshipDFG, SFB 716, Dynamische Simulation von Systemen mit großen Teilchenzahlenen
dc.identifier.eissn1463-9084
dc.identifier.issn1463-9076
dc.identifier.pmid27722327
dc.identifier.urihttps://depositonce.tu-berlin.de//handle/11303/6872
dc.identifier.urihttp://dx.doi.org/10.14279/depositonce-6211
dc.language.isoen
dc.rights.urihttps://creativecommons.org/licenses/by/3.0/
dc.subject.ddc540 Chemie und zugeordnete Wissenschaftende
dc.titleCombined influence of ectoine and salt: spectroscopic and numerical evidence for compensating effects on aqueous solutionsen
dc.typeArticleen
dc.type.versionpublishedVersionen
dcterms.bibliographicCitation.doi10.1039/c6cp05417j
dcterms.bibliographicCitation.issue41
dcterms.bibliographicCitation.journaltitlePhysical chemistry, chemical physicsen
dcterms.bibliographicCitation.originalpublishernameRoyal Society of Chemistryde
dcterms.bibliographicCitation.originalpublisherplaceCambridgede
dcterms.bibliographicCitation.pageend28402
dcterms.bibliographicCitation.pagestart28398
dcterms.bibliographicCitation.volume18
tub.accessrights.dnbfree
tub.affiliationFak. 5 Verkehrs- und Maschinensysteme>Inst. Werkzeugmaschinen und Fabrikbetriebde
tub.affiliation.facultyFak. 5 Verkehrs- und Maschinensystemede
tub.affiliation.instituteInst. Werkzeugmaschinen und Fabrikbetriebde
tub.publisher.universityorinstitutionTechnische Universität Berlin
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