What You Need to Know
Salt draws out 60–70 % of surface moisture, lowering water activity to ≈0.85 and creating a hypertonic environment that denatures muscle proteins into a firm matrix. Smoke phenols such as guaiacol, cresol, and phenol penetrate the flesh, providing antimicrobial activity and a characteristic smoky aroma. The combined osmotic and chemical effects stabilize the fish and inhibit spoilage organisms.
The Science
Primary Reaction
Osmotic dehydration and phenolic compound penetration leading to protein denaturation and antimicrobial activity