Flow and Fracture Phenomena in Adsorbed Protein Layers at the Air/Water Interface in Connection with Spreading Oil Droplets

Langmuir ◽  
2003 ◽  
Vol 19 (24) ◽  
pp. 10210-10216 ◽  
Author(s):  
Natalie E. Hotrum ◽  
Martien A. Cohen Stuart ◽  
Ton van Vliet ◽  
George A. van Aken
Keyword(s):  
Water Interface ◽  
Oil Droplets ◽  
Adsorbed Protein ◽  
Air Water Interface

Oscillating Motion of Oil Droplets in the Emulsion Near the Air–Water Interface

2021 ◽  
Author(s):  
Boris Kichatov ◽  
Alexey Korshunov ◽  
Vladimir Sudakov ◽  
Vladimir Gubernov ◽  
Andrey Kolobov ◽  
...  
Keyword(s):  
Water Interface ◽  
Oil Droplets ◽  
Air Water Interface ◽  
Oscillating Motion

Stress−Strain Curves of Adsorbed Protein Layers at the Air/Water Interface Measured with Surface Shear Rheology

Langmuir ◽  
2002 ◽  
Vol 18 (4) ◽  
pp. 1238-1243 ◽  
Author(s):  
Anneke Martin ◽  
Martin Bos ◽  
Martien Cohen Stuart ◽  
Ton van Vliet
Keyword(s):  
Water Interface ◽  
Stress Strain ◽  
Surface Shear ◽  
Shear Rheology ◽  
Adsorbed Protein ◽  
Air Water Interface

Spreading of partially crystallized oil droplets on an air/water interface

2004 ◽  
Vol 240 (1-3) ◽  
pp. 83-92 ◽  
Author(s):  
Natalie E Hotrum ◽  
Martien A Cohen Stuart ◽  
Ton van Vliet ◽  
George A van Aken
Keyword(s):  
Water Interface ◽  
Oil Droplets ◽  
Air Water Interface

scholarly journals An analysis of the interaction of protein with lipid monolayers at the air/water interface

1970 ◽  
Vol 116 (4) ◽  
pp. 671-680 ◽  
Author(s):  
P. J. Quinn ◽  
R. M. C. Dawson
Keyword(s):  
Cytochrome C ◽  
Bovine Serum Albumin ◽  
Protein Concentration ◽  
Protein Molecule ◽  
Lipid Monolayers ◽  
Water Interface ◽  
Lipid Film ◽  
Adsorbed Protein ◽  
Air Water Interface ◽  
Synthetic Oxytocin

1. Measurements have been made of the interaction of cytochrome c, bovine serum albumin and synthetic oxytocin with low-pressure (2dyn/cm) monolayers of stearic acid, phosphatidylcholine and phosphatidylethanolamine. 2. [14C]Carboxymethylation of the cytochrome c and albumin followed by surface-radioactivity determinations have shown that only a proportion of the protein added to the subphase is bound to the monolayers and that initially the degree of binding is dependent on the protein concentration. The binding is irreversible in the sense that the adsorbed protein cannot be removed by transferring the film containing the interacted protein to a fresh subphase containing no protein. 3. Three successive types of interaction can usually be recognized. (a) Initially, whole molecules of protein penetrate the lipid film and occupy the same area as those of the protein spread at the air/water interface. (b) Above certain film pressures a part of each protein molecule, probably hydrophobic side chains, penetrates the film. The change in surface pressure per unit of bound protein is much smaller than in (a). (c) At higher film pressures, adsorption without penetration occurs. With cytochrome c this is initially dependent on a favourable electrostatic interaction.

Structural characteristics of adsorbed protein and monoglyceride mixed monolayers at the air–water interface

2007 ◽  
Vol 21 (5-6) ◽  
pp. 906-919 ◽  
Author(s):  
M CEJUDOFERNANDEZ ◽  
C CARRERASANCHEZ ◽  
M ROSARIORODRIGUEZNINO ◽  
J PATINO
Keyword(s):  
Structural Characteristics ◽  
Water Interface ◽  
Mixed Monolayers ◽  
Adsorbed Protein ◽  
Air Water Interface

Sampling and analysis of the air-water interface with SEM and EDS of microlayers

1989 ◽  
Vol 47 ◽  
pp. 1004-1005
Author(s):  
Randall W. Smith ◽  
John Dash
Keyword(s):  
Heavy Metals ◽  
Surface Microlayer ◽  
Surface Films ◽  
Water Interface ◽  
Physical Processes ◽  
Infrared Spectroscopic Analysis ◽  
Eds Analysis ◽  
Air Water Interface ◽  
Significant Area ◽  
Bulk Chemical

The structure of the air-water interface forms a boundary layer that involves biological ,chemical geological and physical processes in its formation. Freshwater and sea surface microlayers form at the air-water interface and include a diverse assemblage of organic matter, detritus, microorganisms, plankton and heavy metals. The sampling of microlayers and the examination of components is presently a significant area of study because of the input of anthropogenic materials and their accumulation at the air-water interface. The neustonic organisms present in this environment may be sensitive to the toxic components of these inputs. Hardy reports that over 20 different methods have been developed for sampling of microlayers, primarily for bulk chemical analysis. We report here the examination of microlayer films for the documentation of structure and composition.Baier and Gucinski reported the use of Langmuir-Blogett films obtained on germanium prisms for infrared spectroscopic analysis (IR-ATR) of components. The sampling of microlayers has been done by collecting fi1ms on glass plates and teflon drums, We found that microlayers could be collected on 11 mm glass cover slips by pulling a Langmuir-Blogett film from a surface microlayer. Comparative collections were made on methylcel1ulose filter pads. The films could be air-dried or preserved in Lugol's Iodine Several slicks or surface films were sampled in September, 1987 in Chesapeake Bay, Maryland and in August, 1988 in Sequim Bay, Washington, For glass coverslips the films were air-dried, mounted on SEM pegs, ringed with colloidal silver, and sputter coated with Au-Pd, The Langmuir-Blogett film technique maintained the structure of the microlayer intact for examination, SEM observation and EDS analysis were then used to determine organisms and relative concentrations of heavy metals, using a Link AN 10000 EDS system with an ISI SS40 SEM unit. Typical heavy microlayer films are shown in Figure 3.

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