3‑D Food Printing with Edible Inks

Description

Extrusion‑based 3D printing of protein‑rich edible inks creates layered food structures with controlled viscosity and temperature.

Technical

Viscosity between 200–500 mPa·s at 30–80 °C enables smooth extrusion through a 0.5 mm nozzle, while alginate inks cross‑link within seconds upon Ca²⁺ exposure forming a hydrogel, and gelatin inks gel at 4 °C through thermally induced protein network formation.

Science

Primary Reaction

Ionotropic cross‑linking of alginate with Ca²⁺ and thermal gelation of gelatin/whey‑protein networks

Sensory Profile

Origin & History