How 3D printing can be used to alter sensory perception of food products

sicong zhu

It is well known that 3D food printing holds many promises for making customized foods with attractive shapes, tailored texture properties, and personalized nutritional value. Even though numerous studies demonstrated instrumental texture properties could be influenced by structure modifications of 3D printed foods, no study to date described the impact of these structure modifications on sensory texture perception.

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Computer vision applications to monitor and calibrate extrusion-based 3D food printing

computer vision

3D food printing is an emerging technology that can customize food designs and produce personalized foods. Extrusion-based 3D food printing dispenses food filaments onto a platform, and the object is built layer by layer based on a digital design. The diversity of food materials made it challenging to control the extrusion flow, which often leads to over and under extrusion during printing. Computer vision (CV) offers automated and standardized methods to measure object distance and velocity. Here, we introduce applications of CV to monitor and calibrate 3D food printing.

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3D printing of porous food structures contain Lactobacillus plantarum WCFS1 – Presented by Lu Zhang, Laboratory of Food Process Engineering, Wageningen University

Lu Zhang

3D printing of porous food structures contain Lactobacillus plantarum WCFS1 – Presented by Lu Zhang, Laboratory of Food Process Engineering, Wageningen University, at the 3D Food Printing Conference, Jun 28, Brightlands Campus, Villa Flora, Venlo, The Netherlands.

Extrusion-based 3D printing offers more flexibility in achieving food structures with controlled composition, geometric complexity and added functionality compared to conventional manufacturing methods. This study investigates the feasibility of 3D printing of wheat flour dough containing probiotics (i.e., Lactobacillus plantarum WCFS1) and the survival of probiotic bacteria during post-processing (i.e., baking) as influenced by the geometric design of the structure and the baking condition. From our previous studies we hypothesized that baked products with higher surface/volume ratios would lead to increased survival of bacteria after baking. The printability of different dough formulations was evaluated by two characteristics: easy and uniformity of extrusion; precision and accuracy of the printing. Designs were created to make highly-porous and filled baked food structures. Results show that the precision and stability of the printed structure was the best when using wheat flour with lower protein content (7.2 % w/w), when using a nozzle diameter of 1.2 mm and by adding calcium caseinate (3 % w/w of flour) to weaken the gluten network. The baking process at 175 ○C did not affect the appearance of the printed structures and thus survival of probiotic bacteria was determined. The residual viability of probiotics in a ‘honeycomb’ structure was 1-log higher than that in a ‘concentric’ structure, when 98 % degree of starch gelatinization was reached. This result is consistent with our hypothesis that the bacteria survived better in a structure with higher surface/volume ratio. This work may offer a new avenue to the development of innovative solid food products containing probiotic bacteria. Continue reading “3D printing of porous food structures contain Lactobacillus plantarum WCFS1 – Presented by Lu Zhang, Laboratory of Food Process Engineering, Wageningen University”

“3D printing of filled protein-rich food structures”, Presented by Maarten Schutyser, Wageningen University

We present results on the characterization and development of a printable recipe and FDM procedure for sodium caseinate. The aim of our study was not only to characterize and explore 3D printing of sodium caseinate suspensions, but also investigate the feasibility to include a second phase within the protein matrix. We present two methods that were used to introduce particles and an oil-phase into the caseinate matrix. It was demonstrated feasible to prepare protein-rich objects with specific spatial distributions of particles or fat droplets. Continue reading ““3D printing of filled protein-rich food structures”, Presented by Maarten Schutyser, Wageningen University”