How to Protein Coagulation

What You Need to Know

Protein coagulation occurs through denaturation and aggregation of protein molecules, typically above 60°C (140°F) for heat coagulation, and pH 4.5 or lower for acid coagulation. Heat coagulation involves the formation of disulfide bonds between protein molecules, while acid coagulation involves the disruption of electrostatic bonds.

Key Parameters

Steps

1. 1.

   Douhua (China): Creates the silken tofu texture through controlled gypsum coagulation

2. 2.

   Panna cotta (Italy): Gelatin creates the signature wobbly texture through protein coagulation

3. 3.

   Quajado (Sephardic Jewish cuisine): Egg proteins bind vegetables through slow heat coagulation

The Science

Primary Reaction

Denaturation and aggregation of protein molecules