Interfacial behaviour of β-lactoglobulin aggregates at the oil–water interface studied using particle tracking and dilatational rheology

Soft Matter ◽  
2021 ◽  
Author(s):  
Nan Yang ◽  
Jing Ye ◽  
Jing Li ◽  
Bing Hu ◽  
Robert L. Leheny ◽  
...  
Keyword(s):  
Bile Salt ◽  
Particle Tracking ◽  
Water Interface ◽  
Particle Tracking Microrheology ◽  
Interfacial Behaviour ◽  
Oil Water ◽  
Interfacial Films ◽  
Β Lactoglobulin

From particle tracking microrheology and dilatational rheology, it was found that β-lg thermal aggregates adsorb faster than native β-lg forming interfacial films with a higher elasticity, and they have a stronger ability to resist bile salt substitution.

Dynamic and mechanical evolution of an oil-water interface during bacterial biofilm formation

Soft Matter ◽  
2021 ◽  
Author(s):  
David P. Rivas ◽  
Nathan D. Hedgecock ◽  
Kathleen J Stebe ◽  
Robert L Leheny
Keyword(s):  
Experimental Study ◽  
Particle Tracking ◽  
Biofilm Formation ◽  
Bacterial Biofilm ◽  
Water Interface ◽  
Mechanical Evolution ◽  
Oil Water

We present an experimental study combining particle tracking, active microrheology, and differential dynamic microscopy (DDM) to investigate the dynamics and rheology of an oil-water interface during biofilm formation by the...

Hydroxypropylmethylcellulose–β-lactoglobulin mixtures at the oil–water interface. Bulk, interfacial and emulsification behavior as affected by pH

2012 ◽  
Vol 27 (2) ◽  
pp. 464-474 ◽  
Author(s):  
Nerina A. Camino ◽  
Cecilio Carrera Sanchez ◽  
Juan M. Rodríguez Patino ◽  
Ana M.R. Pilosof
Keyword(s):  
Water Interface ◽  
Oil Water ◽  
Β Lactoglobulin

Competitive adsorption of β-lactoglobulin + tween 20 at the oil-water interface

1991 ◽  
Vol 56 ◽  
pp. 293-300 ◽  
Author(s):  
Jean-Lue Courthaudon ◽  
Eric Dickinson ◽  
Yasuki Matsumura ◽  
David C. Clark
Keyword(s):  
Competitive Adsorption ◽  
Tween 20 ◽  
Water Interface ◽  
Oil Water ◽  
Β Lactoglobulin

FTIR analysis of β-lactoglobulin at the oil/water-interface

2020 ◽  
Vol 302 ◽  
pp. 125349 ◽  
Author(s):  
Helena Schestkowa ◽  
Stephan Drusch ◽  
Anja Maria Wagemans
Keyword(s):  
Water Interface ◽  
Ftir Analysis ◽  
Oil Water ◽  
Β Lactoglobulin

scholarly journals Interfacial Properties of β-Lactoglobulin at the Oil/Water Interface: Influence of Starch Conversion Products with Varying Dextrose Equivalents

2020 ◽  
Author(s):  
Theresia Heiden-Hecht ◽  
Marco Ulbrich ◽  
Stephan Drusch ◽  
Monika Brückner-Gühmann
Keyword(s):  
Matrix Material ◽  
Milk Proteins ◽  
Interfacial Properties ◽  
Water Interface ◽  
High Concentration ◽  
Oil Water ◽  
Starch Conversion ◽  
Key Indicators ◽  
The Impact ◽  
Β Lactoglobulin

AbstractIn spray dried emulsions, frequently milk proteins are used as interfacial active components and starch conversion products are added as matrix material at high concentrations. To characterize interfacial properties at the oil/water interface by commonly applied methods, low protein, and carbohydrate concentrations from 1 to 2% are usually analyzed. The impact of a higher concentration of starch conversion products was not investigated so far. Therefore, the formation and rheological properties of β-lactoglobulin (β-LG) stabilized films at the oil/water interface were investigated via short and long-time adsorption behavior using pendant drop tensiometry as well as dilatational and interfacial shear rheology. Suitability of the applied methods to the chosen samples with higher concentrations >1–2% was verified by calculation of selected key numbers like capillary number and by detailed reviewing of the results which is summarized further on as key indicators. It is hypothesized, that the increase in concentration via presence of starch conversion products will delay interfacial stabilization as a result of increased bulk viscosity with decreasing degree of degradation (dextrose equivalent) of the starch. Furthermore, this increase in concentration leads to more stable interfacial films due to thermodynamic incompatibility effects between protein and starch conversion products which results in increases of local protein concentration. Key indicators proved a general suitability of applied methods for the evaluation of the investigated samples. Moreover, results showed an increase in interfacial film stability and elastic properties alongside a decreased interfacial tension if starch conversion products were present in a high concentration.

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