Applicability of protein and fiber-rich food materials in extrusion-based 3D printing

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96 Citations (Scopus)

Abstract

In this study, the applicability of extrusion-based 3D printing technology for food pastes made of protein, starch and fiber-rich materials was assessed, as a starting point in the development of healthy, customized snack products. The printability of starch-, cellulose nanofiber-, milk powder-, oat- and faba bean protein-based materials and their mixtures was evaluated by examining the ease and uniformity of extrusion as well as the precision and stability of the printed pattern. The best printing precision and shape stability was obtained with a semi-skimmed milk powder-based paste. Rheological measurements revealed that the shape stability after printing was linked with the yield stress of the paste. Post-processing by oven drying was most successful at high initial solids contents (<50%) of the printed samples. Extrusion-based 3D printing is a promising tool for producing healthy, structured foods, but further research is needed for optimising the mechanical properties of the printed materials.

Original languageEnglish
Pages (from-to)20-27
Number of pages8
JournalJournal of Food Engineering
Volume220
Issue numberApril
DOIs
Publication statusPublished - 2018
MoE publication typeA1 Journal article-refereed

Keywords

  • 3D printing
  • starch
  • protein
  • cellulose nanofiber
  • rheology
  • post-processing

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