Description
Osmotic pressure differential drives salt and water exchange across cell membranes, denaturing proteins to increase water retention.
Technical
The hypertonic brine solution (3-6% salinity) creates osmotic pressure that initially dehydrates surface cells, then through diffusion equalizes salt concentration while myofibrillar proteins (actin, myosin) unwind and bind water molecules. Sodium ions disrupt electrostatic bonds in muscle fibers.
Culinary Significance
Prevents moisture loss during cooking by increasing bound water content up to 10% by weight. Salt-soluble proteins form gel matrix that retains juices. Critical for lean meats (poultry breast, pork loin) and enhances seasoning penetration versus dry brining.
Science
Primary Reaction
Myofibrillar protein solubilization via sodium chloride-induced electrostatic shielding
Parameters
Temperature
4°C optimal
1°C to 7°C range
Must stay below danger zone (4-60°C)
Time
2 hours per 500g
30 minutes – 24 hours
Thicker cuts require geometric time increase
Equipment