The relationships between the physicochemical properties of wheat starch and the characteristics of 3D printing were studied by extracting wheat starch from three kinds of wheat flour with different gluten contents. The results showed that wheat starch extracted from high-gluten wheat flour (MS) and medium-gluten wheat flour (ZS) exhibited more accurate printing and better quality than wheat starch extracted from low-gluten wheat flour (JS). ZS had moderate final viscosity and setback value, indicating good extrusion performance and high elasticity. Therefore, the printing quality of ZS was the best, with obvious and unbroken printing lines. The 3D-printed sample made from ZS had dimensions closest to the designed CAD model. Additionally, there were no significant differences in the functional groups of native starch, gelatinized starch, and post-3D-printed starch among the three types. ZS exhibited the most regular microstructure. Therefore, wheat starch extracted from medium-gluten wheat flour was determined to be the most suitable for 3D printing. This research could provide a new theoretical basis for the application of wheat starch in 3D-printed food and offer new technical support for practical production.
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