Denaturation is what happens when heat is applied to the eggs. ... The heat coming from your stove denatures the protein by disrupting some of its bonds that held the molecule into shape. In the case of hard-boiled eggs, the proteins clump together and solidify, causing the egg white and yolk to harden.

Do eggs coagulate when heated?

When it is heated the runny yolk and white (albumen – which is the major source of protein) turn solid. The proteins in the egg start to thicken, a process known as coagulation. Egg whites coagulate at 60°C, egg yolks 65°C, with full coagulation occurring at 70°C. This process also happens when you cook meat.

What temperature do eggs solidify at?

“You might be surprised to learn that egg white solidifies between 140º F and 149º F—far below water's boiling point. Egg yolk coagulates between 149º F and 158º F, a temperature higher than egg whites because the yolk's protein structure is different and not as sensitive to heat.