Extrusion-based 3D food printing - Materials and machines

Area of Science:

• Food Science
• Biomaterials Engineering
• Additive Manufacturing

Background:

• Dysphagia affects food intake due to difficulties with swallowing.
• Pureed diets are often visually unappealing, leading to reduced nutritional intake.
• 3D food printing offers a novel approach to enhance food texture and appearance.

Purpose of the Study:

• To review current research on extrusion-based 3D food printing for pureed diets.
• To analyze edible materials (food inks) and machinery (printers) used in 3D food printing.
• To identify challenges and future directions in 3D food printing technology for therapeutic diets.

Main Methods:

• Literature review of scientific publications on 3D food printing.
• Analysis of food materials modified for printability using additives like hydrocolloids.
• Examination of various academic and commercial 3D food printer designs.

Main Results:

• Hydrocolloids (e.g., starch, pectin, nanocellulose) are effective in modifying rheological properties for printability.
• Several 3D food printers exist with shared advantages and limitations.
• Successful modification of conventional foods into printable formulations is achievable.

Conclusions:

• 3D food printing shows promise for improving the palatability and intake of pureed diets for dysphagia patients.
• Further research is needed to refine 3D food printer capabilities, address limitations, and optimize food ink formulations.
• Advancements in 3D food printing can significantly impact nutritional support and quality of life for individuals with swallowing disorders.