How to Transglutaminase‑Mediated Meat‑Like Binding for Legumes

What You Need to Know

The enzyme catalyzes the formation of ε‑(γ‑glutamyl)lysine isopeptide bonds between glutamine and lysine side chains, generating a three‑dimensional protein network. Reaction proceeds optimally at 37–45 °C and pH 6.0–7.5, with gelation achieved in 30–60 min. Inhibitory factors such as ≥0.5 M NaCl, >10 % v/v alcohol, excessive protein loading (>30 % w/w) or temperatures >55 °C diminish cross‑linking efficiency.

Steps

1. 1.

   Mera-meat satay (Indonesia): Creates skewerable texture for peanut-based satay

2. 2.

   Faux-lafel (Levant): Binds chickpea mixture without traditional wheat binder

3. 3.

   Vegan tonkatsu (Japan): Mimics the fibrous texture of pork cutlet using lentil protein

The Science

Primary Reaction

ε‑(γ‑glutamyl)lysine isopeptide bond formation via transglutaminase‑catalyzed acyl transfer

Common Mistakes