Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 407472
Title Resolution of D- and L-glucoses by chiral N-octyl-beta-D-glycoside-Cu(II) complex adsorbed at the gas/liquid interface of small bubbles
Author(s) Sakai, M.; Miyazawa, K.; Jitsumatsu, H.; Kamio, K.; Mitsuiki, S.; Toh, N.; Sugihara, G.; Norde, W.
Source Colloids and Surfaces. B: Biointerfaces 80 (2010)2. - ISSN 0927-7765 - p. 107 - 115.
Department(s) Physical Chemistry and Colloid Science
Publication type Refereed Article in a scientific journal
Publication year 2010
Keyword(s) stearoylserine - bacteria - ion
Abstract A new technique of the jet drop method (JDM) was applied to a chiral molecular discrimination of optically active D- or L-glucose (guest) by chiral N-octyl-beta-D-glycoside (O beta DG)-Cu(II) complex (host) at the gas/liquid interface of small bubbles. The discrimination of glucoses as the guests is possible using O beta DG adsorbed at the gas/liquid interface of bubbles where it acts as the host, either in the presence or the absence of Cu(II) ions. In order to make clear the host-guest interaction at the gas/liquid interface, the composition 01 5000 top jet drops periodically collected onto a slide glass receiver was analyzed. The relative concentration (eta(i) - 1) and the surface excess amount Gamma(0)(i) of species i such as D- and L-glucoses, and O beta DG were determined as a function of bubble size, d(b) and bulk concentration C-b. The partition coefficient, Pi(i) = Gamma(0)(i)/C-b was also evaluated for each component. The adsorption of these materials either in the presence or absence of Cu(II) ions, was assigned to the Freundlich type, and the discrimination of D- and L-glucoses with O beta DG was evaluated in terms of the Freundlich constant, k(i) and 1/n. The discrimination ability of O beta DG was also evaluated by determining the equilibrium constants, K-c of complex formations for the respective glucoses in the presence and absence of Cu(II) ions. It was found that L-glucose can form a more stable complex with O beta DG-Cu(II). (C) 2010 Published by Elsevier B.V.
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