Ca2+-Induced Egg White Isolate Gels with Various Microstructure

Ca2+-Induced Cold-Set Gelation of Whey Protein Isolate Fibrils

In this paper we describe the rheological behaviour of Ca2+-induced cold-set gels of whey protein mixtures. Coldset gels are important applications for products with a low thermal stability. In previous work [1], we determined the state diagram for whey protein mixtures that were heated for 10 h at pH 2 at 80°C. Under these conditions, the major whey protein, b-lactoglobulin (b-lg), forms fibri...

Effect of Proteolytic Modification on Texture and Mastication of Heat‐Treated Egg White Gels

Raw egg white undergoes sol-gel transition by heat treatment, which changes it to an elastic gel. Here, protease treatment to render a new texture to heated egg white gel was applied. Protease-treated gels exhibited ductile flow without obvious rupture points. Transmission electron microscopy analysis showed that in protease-treated gels, protein aggregates were distributed more homogeneously c...

How a Micro-Phase Separation Model Explains Gelation Properties of Egg White Protein Gels

DMSO-induced denaturation of hen egg white lysozyme.

We report on the size, shape, structure, and interactions of lysozyme in the ternary system lysozyme/DMSO/water at low protein concentrations. Three structural regimes have been identified, which we term the "folded" (0 < φ(DMSO) < 0.7), "unfolded" (0.7 ≤ φ(DMSO) < 0.9), and "partially collapsed" (0.9 ≤ φ(DMSO) < 1.0) regime. Lysozyme resides in a folded conformation with an average radius of g...

Egg White Proteins

Egg white as a protein system possesses much interest, both biochemical and technological. Study of the egg white proteins has been handicapped by the difficulty of preparation. The five variant system developed by Cohn and coworkers for the fractionation of plasma offers many advantages over the salting-out techniques (1). Low temperatures are employed to improve protein stability. Since low s...