Improving the Three-Dimensional Printability of Potato Starch Loaded onto Food Ink

Area of Science:

• Food Science
• Materials Science
• Additive Manufacturing

Background:

• 3D printing of food offers customization and novel textures.
• Pea protein is a promising plant-based ingredient but faces printability challenges.
• Developing suitable food inks is crucial for successful 3D food printing.

Purpose of the Study:

• To enhance the 3D printability of pea protein using jet-type 3D printing.
• To investigate the role of native potato starch in food ink formulations.
• To optimize food ink properties for improved dimensional accuracy and structural integrity.

Main Methods:

• Formulation of nanocellulose-alginate based food ink with varying concentrations of native potato starch.
• Evaluation of 3D printability and dimensional accuracy (X, Y, and Z axes) of food ink bases.
• Assessment of pea protein 3D printing using optimized food ink formulations.
• Analysis of ink properties including electrostatic repulsion, viscoelasticity, and thixotropic behavior.

Main Results:

• Food ink bases with and without potato starch achieved >95% dimensional accuracy on X and Y axes.
• A food ink containing 1% potato starch demonstrated ~99% Z-axis accuracy, significantly improving stacking.
• Potato starch enhanced ink properties, leading to a 46% improvement in Z-axis dimensional accuracy for 3D-printed pea protein compared to controls.
• Native potato starch acts as a crucial additive for high-resolution 3D jet-type printing.

Conclusions:

• Native potato starch is an effective additive for improving the 3D printability of pea protein.
• Optimized food ink formulations enhance structural integrity and dimensional accuracy in 3D food printing.
• Starch-based food inks show potential for high-resolution jet-type 3D printing applications.