Food 3D PrintingResearch & Education

Ring in the holidays with 3D printed mashed potatoes

Boil em, mash em, stick em in a tube!

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Well, the winter holidays are right around the corner, which means lots of family time, cozy activities and, of course, copious amounts of food. To get in the spirit—and to combine my love of winter carbs and 3D printing—we’ll be looking at an interesting food 3D printing research project centered on a holiday staple: potatoes.

The research, recently published in the journal Food Research International, is being conducted by a joint team from Jiangnan University in China and The University of Queensland in Australia. Working together, the team members have experimented with 3D printing mashed potatoes with probiotic additives.

The overall aim of the project has been to optimize the mashed potato formulation for 3D printing (through its rheological properties and printability) as well as to assess the feasibility of incorporating probiotics into the printed edibles, which could lead to new opportunities for functional food 3D printing.

As the research team explains, functional foods have become increasingly popular in recent years because of health consciousness trends. Functional foods, which provide nutrients and satisfy hunger often in a simple and practical way, are also crucial in areas of the world plagued by malnutrition.

3D printed mashed potatoes research
3D printed mashed potato samples

3D printing, for its part, has been a topic of interest in the realm of functional foods, as it can be used to created edible ingredients with tailored nutritional properties. We’ve seen the topic discussed by a number of companies and research groups, particularly in regards to feeding the elderly or those with food limitations.

In this particular project, the researchers were investigating whether probiotics could effectively be added to 3D printed mashed potatoes to improve their nutrients. Probiotics are a type of intestinal microorganisms that help humans to maintain a balanced digestion. Probiotics have been found to have positive effects on people with inflammatory bowel diseases, as well as those with metabolic and periodontal conditions.

The study consisted of 3D printing mashed potatoes with probiotics using a range of nozzle diameters and temperatures. Each variable was then evaluated for probiotic survival under specific conditions. According to the researchers, only the smallest nozzle tested (0.6 mm) resulted in the reduction of probiotic viability.

“This study suggests that it is promising to fabricate attractive food structures enriched with probiotics microorganisms using 3D printing,” the study concludes. “We may develop a microenvironment devoid of oxygen by creating internal structure of 3D printed products to avoid the adverse effects of oxygen to probiotics microorganisms. Moreover, the effects of added probiotics cells on the quality of 3D printed samples and quality changes during storage might be another research field. This leaves a large space for future investigation.”

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Tess Boissonneault

Tess Boissonneault is a Montreal-based content writer and editor with five years of experience covering the additive manufacturing world. She has a particular interest in amplifying the voices of women working within the industry and is an avid follower of the ever-evolving AM sector. Tess holds a master's degree in Media Studies from the University of Amsterdam.

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