Characterization of Iraqi Domestic Wheat Flour and the Correlation between Chemical and Rheological properties
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Abstract
Iraqi domestic wheat quantity increased dramatically during the last two years, and the Iraqi government is looking for self-sufficiency in wheat production. However, the quality of the wheat flour is more important than the quantity in terms of making the final product. Therefore, this study aimed to determine the quality of Iraqi domestic wheat. Also, the study aimed to conduct the correlation between the chemical and rheological properties of flour samples. The study included 29 flour samples. The results showed that protein content was 10.2 ± 0.4%, gluten content was 19.6 ± 5.0%, gluten index was 73.2 ± 29.8%, and the falling number was 610 ± 89s. Rheological properties were ranged from 1.8 to 9.5min for the stability, 50 to 260BU for the degree of softening (DoS), zero to 78cm2 for the energy, and 4 to 220mm for the extensibility. The highest correlation was between the gluten index and the Farinograph and Extensiograph parameters. Gluten index was highly correlated to DoS (r = -0.87, p < 0.0001), followed by extensibility (r = 0.76, p < 0.0001), stability (r = 0.72, p < 0.0001), and energy (r = 0.66, p < 0.0001). The correlation between other studied chemical properties, protein and gluten content, and most rheological parameters was non-significant. In conclusion, Iraqi domestic wheat quality was varied, from very runny to moderate. The gluten index was a precise parameter can be used to predict wheat quality. Therefore, Iraqi wheat breeders should be strongly considered the wheat quality in their work in addition to the quantity.
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Alhendi A.S., Al-Shalchi D.Z., Alsallami R.T., Alobaidy Z.S. Effect of flour extraction rate on the sensory evaluation of Iraqi flatbread. Current Nutrition and Food Science, 2021, 7(2): 204-209. https://doi.org/10.2174/1573401316999200530213123
Alhendi A.S., Almukhtar B.Q., 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.
Di Cagno R., De Angelis M., Lavermicocca P., De Vincenzi M., Giovannini C., Faccia M., Gobbetti M. Proteolysis by sourdough lactic acid bacteria: effects on wheat flour protein fractions and gliadin peptides involved in human cereal intolerance. Applied and Environmental Microbiology, 2002, 68(2): 623-633. https://doi.org/10.1128/AEM.68.2.623-633.2002
Diósi G., Móré M., Sipos P. Role of the farinograph test in the wheat flour quality determination. Acta Universitatis Sapientiae, Alimentaria, 2015, 8(1): 104-110. https://doi.org/10.1515/ausal-2015-0010
Hadnađev T.D., Pojić M., Hadnađev M., Torbica A. The role of empirical rheology in flour quality control. In Wide Spectra of Quality Control (I. Akyar Ed.), InTech. 2011, pp. 335-339, Print ISBN: 978-953-307-683-6, eBook ISBN: 978-953-51-6073-1, https://doi.org/10.5772/1142
Hruškova M., Machova D. Changes of wheat flour properties during short term storage. Czech Journal of Food Sciences , 2002, 20(4): 125-130. https://doi.org/10.17221/3522-CJFS
Huen J., Börsmann J., Matullat I., Böhm L., Stukenborg F., Heitmann M., Zannini E., Arendt E.K. Wheat flour quality evaluation from the baker’s perspective: comparative assessment of 18 analytical methods. European Food Research and Technology, 2018, 244(3): 535-545. https://doi.org/10.1007/s00217-017-2974-3
ICC Standards. Standard methods of the international association for cereal science and technology. Vienna, Austria: International Association for Cereal Science and Technology, 1996.
Ionescu V., Stoenescu G., Vasilean I., Aprodu I., Banu I. Comparative evaluation of wet gluten quantity and quality through different methods. Annals of the University Dunarea de Jos of Galati. Fascicle VI-Food Technology, 2010, 34(2): 49-53. Available at: https://www.gup.ugal.ro/ugaljournals/index.php/food/article/view/3618.
Konopka I., Fornal Ł., Abramczyk D., Rothkaehl J., Rotkiewicz D. Statistical evaluation of different technological and rheological tests of Polish wheat varieties for bread volume prediction. International Journal of Food Science and Technology, 2004, 39(1): 11-20. https://doi.org/10.1111/j.1365-2621.2004.00741.x
Nikolić N.Č., Stojanović J.S., Stojanović G.S., Mastilović J.S., Karabegović I.T., Petrović G.M., Lazić M.L. The effect of some protein rich flours on farinograph properties of the wheat flour. Advanced Technologies, 2013, 2(1): 20-25. Available at: http://www.tf.ni.ac.rs/images/casopisi/sveska2vol1/c33.pdf
Oikonomou N.A., Bakalis S., Rahman M.S., Krokida M.K.. Gluten index for wheat products: Main variables in affecting the value and nonlinear regression model. International Journal of Food Properties, 2015, 18(1): 1-11. https://doi.org/10.1080/10942912.2013.772198
Perten H., Bondesson K., Mjorndal A. Gluten index variations in commercial Swedish wheat samples. Cereal Foods World, 1992, 37(8): 658-660 .
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. https://doi.org/10.1111/pbi.12390
Ram S., Dawar V., Singh R.P., Shoran J. Application of solvent retention capacity tests for the prediction of mixing properties of wheat flour. Journal of Cereal Science, 2005, 42(2): 261-266. https://doi.org/10.1016/j.jcs.2005.04.005
Sapirstein H., Wu Y., Koksel F., Graf R. A study of factors influencing the water absorption capacity of Canadian hard red winter wheat flour. Journal of Cereal Science, 2018, 81(5): 52-59. https://doi.org/10.1016/j.jcs.2018.01.012
Shewry P.R., Halford N.G., Belton P.S., Tatham A.S. The structure and properties of gluten: an elastic protein from wheat grain. Philosophical Transactions of the Royal Society of London B: Biological Sciences, 2002, 357(1418): 133-142. https://doi.org/10.1098/rstb.2001.1024
Sidhu J.P.S., Bawa A.S. Dough characteristics and baking studies of wheat flour fortified with xanthan gum. International Journal of Food Properties, 2002, 5(1): 1-11. https://doi.org/10.1081/JFP-120015588
Yazar G., Duvarci O., Tavman S., Kokini J.L. Non-linear rheological properties of soft wheat flour dough at different stages of Farinograph mixing. Applied Rheology, 2016, 26(5) 52508. https://doi.org/10.3933/applrheol-26-52508
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