What You Need to Know
The process relies on the shear‑thinning behavior of hydrocolloids such as gelatin, carrageenan, xanthan gum, or modified starch, which flow under shear during extrusion and rapidly gel when the shear is removed. Protein‑based inks (whey or soy isolates) provide structural integrity through protein cross‑linking and network formation. Temperature control is critical to prevent premature solidification or protein denaturation.
The Science
Primary Reaction
gelation_and_protein_crosslinking