What You Need to Know
At 50–55 °C the myosin proteins in fish denature gently, allowing the protein matrix to retain water without coagulating collagen. The citrus brine, with a pH of 3.5–4.0, diffuses citric acid, limonene, and citral into the flesh, enhancing flavor and inhibiting bacterial growth during the hold.
The Science
Primary Reaction
Gentle denaturation of myosin and diffusion of citrus flavor compounds into fish tissue