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Zeyad A. Ahmed, Dr. Abeer S. Alhendi, Dr. Mohammed S. Hussein Shaimaa A. Abed Rana T. Alsallami


The main objective of this study was to determine the changes in the rheological characteristics of the flour produced by the industry mill Buhler AG 600 ton/day through adding big particles of flour, semolina, and fine bran (FB) to the produced flour. The study was conducted on mixed wheat grains (80% Iraqi wheat and 20% American Red wheat). After changing the directions of some pipes in the milling section, the flours were tested, and the effect of having bigger particles in the product was measured. The results showed that the flour extraction rate, moisture content, ash, and protein were increased as the flour particle size was increased. Farinograph results explained a clear effect of big particles and fine bran on increasing the water absorption, however, the dough stability was decreased mostly insignificantly. Extensiograph results showed that there was no big difference between the control flour and other produced flour. Therefore, the changes of the mill pipes could increase the flour extraction rate and reduce the pressure on the mill rolls without significant differences in the rheological properties of the produced flour.

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AACC Methods. Approved methods of the American Association of Cereal Chemists, 10th edition, American Association of Cereal Chemists, St. Paul, MN, USA, 2000.

Al-Dmoor, H.M. Cake flour: functionality and quality. European Scientific Journal, ESJ, 2013, 9(3): 166-180.

Alhendi, A.S., Ahmed, T.H., Albayati, W.S., Almukhtar, B.Q., Ali. Z.K., and Al-Hayani, N.K. Comparisons between flour quality produced from three different mills: buhler, quadrumat, and industry mills. International Journal of Food Studies, (In press).

Alhendi, A.S., Almukhtar, B.Q., and Al-haddad, F.M. Changes in flour quality of four iraqi wheat varieties during storage. Pertanika Journal of Tropical Agricultural Science, 2019, 42 (1): 15 – 25.

Anjum, F.M., Khan, M.R., Din, A., Saeed, M., Pasha, I. and Arshad, M.U. Wheat gluten: high molecular weight glutenin subunits—structure, genetics, and relation to dough elasticity. Journal of Food Science, 2007, 72(3): 56-63.

Azizi, M.H., SEYEDIN, S., and Peyghambardoust, S.H. Effect of flour extraction rate on flour composition, dough rheological characteristics and quality of flatbread. Journal of Agricultural Science and Technology, 2006, 8, 323-330.

Edwards, M.A., Osborne, B.G. and Henry, R.J. Investigation of the Effect of Conditioning on the Fracture of Hard and Soft Wheat Grain by the Single-Kernel Characterization System: A Comparison with Roller Milling. Journal of Cereal Science, 2007, 46(1): 64-74.

Faměra, O., Hrušková, M. and Novotna, D. Evaluation of Methods for Wheat Grain Hardness Determination. Plant, Soil and Environment, 2004, 50: 489-493.

Fišteš, A.Z. and Vukmirović, Đ.M. Reduction of Wheat Middlings Using a Conventional and Eight-Roller Milling Systems. Acta Periodica Technologica, 2009, 40: 25-34.

Hareland, G.A. Evaluation of flour particle size distribution by laser diffraction, sieve analysis and near-infrared reflectance spectroscopy. Journal of Cereal Science, 1994, 20(2):183-190.

Joye, I.J., Lagrain, B. and Delcour, J.A. Endogenous Redox Agents and Enzymes that Affect Protein Network Formation During Bread Making-A review. Journal of Cereal Science, 2009, 50(1): 1-10.

Krasileva, K.V., Vasquez-Gross, H.A., Howell, T., Bailey, P., Paraiso, F., Clissold, L., Simmonds, J., Ramirez-Gonzalez, R.H., Wang, X., Borrill, P. and Fosker, C. Uncovering Hidden Variation in Polyploid Wheat. Proceedings of the National Academy of Sciences, 2017, 114(6): 913-921.

Lineback, D.R., Rasper, V.F. Wheat carbohydrates. In: Pomeranz, Y. (Ed.) Wheat: Chemistry and Technology, third ed, vol. 1. AACC, St Paul, 1988, 277-372.

Popper, L., Schäfer, W. and Freund, W. Future of flour: A compendium of flour improvement, 2006, Agrimedia.

Ral, J.P., Whan, A., Larroque, O., Leyne, E., Pritchard, J., Dielen, A.S., Newberry, M. Engineering high α‐amylase levels in wheat grain lowers Falling Number but improves baking properties. Plant Biotechnology Journal, 2016,14(1): 364-376.

Ramírez‐Wong,B., Walker, C.E., Ledesma‐Osuna, A.I., Torres, P. I., Medina‐Rodríguez, C.L., López‐Ahumada, G.A., Salazar-Garcia, M.G., Ortega-Ramirez, R., Jonson, A.M., & Flores, R. A. Effect of flour extraction rate on white and red winter wheat flour compositions and tortilla texture. Cereal chemistry, 2007, 84(3): 207-213.

Rani, K.U., Prasada Rao U.J.S., Leelavathi K., and Haridas Rao, P. Distribution of enzymes in wheat flour mill streams. Journal of Cereal Science, 2001, 34(3): 233-242

Sakhare, S.D. and Inamdar, A.A. The Cumulative Ash Curve: A Best Tool to Evaluate Complete Mill Performance. Journal of Food Science and Technology, 2014, 51(4): 795-799.

Sonaye, S.Y. and Baxi, R.N. Particle Size Measurement and Analysis of flour. International Journal of Engineering Research and Applications, 2012, 2(3): 1839-1824.

Steglich, T., Bernin, D., Moldin, A., Topgaard, D. and Langton, M. Bran Particle Size Influence on Pasta Microstructure, Water Distribution, and Sensory Properties. Cereal Chemistry, 2015, 92(6): 617-623.

Wang, N., Hou, G.G., Kweon, M. and Lee, B. Effects of Particle Size on the Properties of Whole-Grain Soft Wheat Flour and Its Cracker Baking Performance. Journal of Cereal Science, 2016, 69: 187-193.

Wieser, H., Koehler, P. and Konitzer, K. Celiac Disease and Gluten: Multidisciplinary Challenges and Opportunities (1st ed.), Academic Press Elsevier, London, Waltham, San Diego, 2014, 53-75.

Wilcox, R. A., Deyoe, C. W., & Pfost, H. B. A method for determining and expressing the size of feed particles by sieving. Poultry Science, 1970, 49(1), 9-13.

How to Cite
AHMED, Zeyad A. et al. Evaluating the Flour Properties under Different Levels of Particle Size Distribution and Fine Bran Content. Food Science and Applied Biotechnology, [S.l.], v. 4, n. 2, p. 147-155, oct. 2021. ISSN 2603-3380. Available at: <>. Date accessed: 18 may 2024. doi: