Related Experiment Video
Updated: Jul 11, 2026

Synthesis of Monocyte-targeting Peptide Amphiphile Micelles for Imaging of Atherosclerosis
Published on: November 17, 2017
Impact of acidic and basic pH on the interfacial shear rheology and foaming properties of transglutaminase
Gaoussou Karamoko1, Christine Chèné2, Romdhane Karoui1
1Univ. Artois, Inra, Ulco, Univ. Lille, Yncréa, Umrt 1158 BioEcoAgro, ICV-Institut Charles Viollette, F-62300 Lens, France.
Abstract:
This work investigated the pH effect (pH 3.5 to 9.0) on the interfacial behavior of native and transglutaminase cross-linked (TGase) caseins films at air-water interface using a rotational rheometer equipped with a BiCone geometry. Both caseins formed a viscous-like interfacial adsorbed layer within the range of frequency from 0.1 to 10 rad/s, with a maxima viscoelastic layer at alkaline pH (8.0 and 9.0). TGase caseins exhibited the highest interfacial shear surface moduli values, and the difference between them was pronouncedly, under acid pH conditions (3.5 to 5.5). The conformational studies revealed the pH and transglutaminase cross-linking effect on the protein structure. The foaming properties suggested a weakening and strengthening of foaming capacity and stability, respectively, by TGase in alkaline pH conditions. The combination of pH-shifting and transglutaminase treatment, especially, under alkaline pH conditions might be applied to improve the casein ability to stabilize the foams in several food applications.
More Related Videos
11:38Combining Microfluidics and Microrheology to Determine Rheological Properties of Soft Matter during Repeated Phase Transitions
Published on: April 19, 2018
10:20In vitro Digestion of Emulsions in a Single Droplet via Multi Subphase Exchange of Simulated Gastrointestinal Fluids
Published on: November 18, 2022
Related Concept Videos
Problem Solving on Stress and Strain
Surface Active Agents
Micelles