What You Need to Know
During drying, protein denaturation and Maillard browning reactions occur, producing melanoidins and protein cross‑links that give tempeh its characteristic color and firmness. The process also concentrates nutrients and lowers pH through residual organic acids, creating an environment hostile to spoilage microbes.
The Science
Primary Reaction
Drying reduces moisture and water activity, promoting protein denaturation, Maillard browning, and cross‑linking.