4.6 Article

Effects of Wheat Bran Micronization on the Quality of Reconstituted Whole-Wheat Flour and Its Cooked Noodles

Journal

PROCESSES
Volume 10, Issue 5, Pages -

Publisher

MDPI
DOI: 10.3390/pr10051001

Keywords

micronization; noodle; particle size; wheat bran; whole wheat

Funding

  1. National Key Research and Development Projects of China [2016YFD0701801]
  2. Financial Support for Agricultural Scientific and Technological Achievements Transformation Projects of Shanxi Province, China [SCZ-ZNCGZH201306]
  3. Postgraduate Education Innovation Project of Shanxi Province, China [2021Y308]

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The particle size of wheat bran has a significant impact on the quality of reconstituted wholewheat flour and its products. Larger particle sizes of wheat bran can improve moisture absorption of wholewheat flour and the stickiness of cooked noodles, but excessive grinding can reduce parameters such as pasting viscosity and hardness.
The particle size of wheat bran plays an important role in the quality of reconstituted wholewheat flour and its products. The effects of wheat bran particle size on the quality of reconstituted whole-wheat flour and its cooked noodles were analyzed; the mean particle size (D-50) of wheat bran ranged from 26.05 to 46.08 mu m. Results show that the decreases in D-50 of wheat bran induced the changes in the quality of whole-wheat flour and its noodles. Specifically, the damaged starch content, water absorption, and the solvent retention capacity of sodium carbonate and sucrose of whole-wheat flour increased at various degrees, while pasting viscosity decreased, and the gluten index and SDS-sedimentation volume increased first and then decreased. The cooking yield, cooking loss, and break rate of fresh noodles decreased first and reached a trough at D-50 of 26.05 mu m, and then increased. The adhesiveness of cooked noodles increased, the score of smoothness, taste, appearance, and color increased to a stable value, but the hardness, springiness, cohesiveness, resilience, firmness score, and elasticity score increased first and then decreased. These turning points of changing trends of indexes mostly occurred when the D-50 of wheat bran was 26.51 mu m. In conclusion, whole-wheat noodles with wheat bran of D-50 of 26.51 mu m addition exhibit better cooking, textural, and sensory properties than those with smaller or larger wheat bran. Excessive crushing of wheat bran not only costs highly in terms of energy, but also has a negative impact on the quality of the noodles.

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