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@ARTICLE{Engelskirchen:893803,
author = {Engelskirchen, Sandra and Wellert, Stefan and Holderer,
Olaf and Frielinghaus, Henrich and Laupheimer, Michaela and
Richter, Sven and Nestl, Bettina and Nebel, Bernd and Hauer,
Bernhard},
title = {{S}urfactant {M}onolayer {B}ending {E}lasticity in {L}ipase
{C}ontaining {B}icontinuous {M}icroemulsions},
journal = {Frontiers in Chemistry},
volume = {8},
issn = {2296-2646},
address = {Lausanne},
publisher = {Frontiers Media},
reportid = {FZJ-2021-02842},
pages = {613388},
year = {2021},
abstract = {Lipase-catalyzed reactions offer many advantages among
which a high degree ofselectivity combined with the
possibility to convert even non-natural substrates are of
particular interest. A major drawback in the applicability
of lipases in the conversionof synthetically interesting,
non-natural substrates is the substantial insolubility of
suchsubstrates in water. The conversion of substrates,
natural or non-natural, by lipasesgenerally involves the
presence of a water–oil interface. In the present paper,
we exploit the fact that the presence of lipases, in
particular the lipase from Candidaantarctica B (CalB),
changes the bending elastic properties of a surfactant
monolayerin a bicontinuous microemulsion consisting of
D2O/NaCl -n-(d)-octane-pentaethyleneglycol monodecyl ether
(C10E5) in a similar manner as previously observed for
amphiphilic block-copolymers. To determine the bending
elastic constant, we have used twoapproaches, small angle
neutron scattering (SANS) and neutron spin echo
(NSE)spectroscopy. The time-averaged structure from SANS
showed a slight decrease inbending elasticity, while on
nanosecond time scales as probed with NSE, a stiffening has
been observed, which was attributed to adsorption/desorption
mechanisms of CalB atthe surfactant monolayer. The results
allow to derive further information on the influence of
CalB on the composition and bending elasticity of the
surfactant monolayer itself aswell as the underlying
adsorption/desorption mechanism.},
cin = {JCNS-FRM-II / JCNS-1 / JCNS-4 / MLZ},
ddc = {540},
cid = {I:(DE-Juel1)JCNS-FRM-II-20110218 /
I:(DE-Juel1)JCNS-1-20110106 / I:(DE-Juel1)JCNS-4-20201012 /
I:(DE-588b)4597118-3},
pnm = {6G4 - Jülich Centre for Neutron Research (JCNS) (FZJ)
(POF4-6G4) / 632 - Materials – Quantum, Complex and
Functional Materials (POF4-632)},
pid = {G:(DE-HGF)POF4-6G4 / G:(DE-HGF)POF4-632},
experiment = {EXP:(DE-MLZ)KWS1-20140101 / EXP:(DE-MLZ)J-NSE-20140101 /
EXP:(DE-MLZ)KWS2-20140101},
typ = {PUB:(DE-HGF)16},
pubmed = {33469526},
UT = {WOS:000608554200001},
doi = {10.3389/fchem.2020.613388},
url = {https://juser.fz-juelich.de/record/893803},
}