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Food based on cereals especially the flour as an end product has been frequently consumed all over the world. Different types of commercially available flour (wheat, oat, corn, rye, integral rye flour) were tested for several characteristics such as magnetic, microscopic, testing of carbonates in flour with hydrochloric acid and oxalic acid, determination of gluten content, pH value, moisture content, foam capacity, flour colour analysis and FT-IR analysis. The microscopic analysis with an optical microscope showed the structural properties of each flour type. The results show that colour indexes represented with values of L*, a*, and b* showed good correlation in the evaluation of milling precision and flour grading (maximum value for wheat flour, L* was 86.921). The FT-IR analysis showed the main peaks in the region of C-H, N-H, and C-N bonds. The proposed methods are easy to be handled for rapid determination of several flour characteristics such as pH value, moisture and gluten content, parameters directly connected to storage quality. Application of available less cost methods for determination of certain parameters for safety use of flour products.

References

  1. Belitz HD, Grosch W, Schieberle P. Food chemistry, 4th ed. Springer-Verlag Berlin Heidelberg, Germany; 2009. ISBN: 978-3-540-69934-7
     Google Scholar
  2. Tejera RL, Luis G, González-Weller D, Caballero JM, Gutiérrez ÁJ, Rubio C, et al. Metals in wheat flour; comparative study and safety control. Nutr Hosp. 2023; 28:506-513.
     Google Scholar
  3. Sujka K, Koczoń P, Ceglińska A, Reder M, Ciemniewska-Żytkiewicz H. The application of FT-IR spectroscopy for quality control of flours obtained from Polish producers. J Anal Methods Chem. 2017; 2017: 1-9.
     Google Scholar
  4. Başlar M, Ertugay MF. Determination of protein and gluten quality-relate d parameters of wheat flour using near-infrared reflectance spectroscopy (NIRS). Turk J Agric For. 2011; 35:139-144.
     Google Scholar
  5. Schindler R, Lendl B, Kellner R. Determination of amyloglucosidase activity using flow injection analysis with Fourier transform infrared spectrometric detection. Analyst. 1997; 122:531-534.
     Google Scholar
  6. Ji M, Fang W, Li W, Zhao Y, Guo Y, Wang W, et al. Genome wide association study of the whiteness and colour related traits of flour and dough sheets in common wheat. Sci Rep. 2011; 11:1-12.
     Google Scholar
  7. Hrušková M, Švec I, Sekerová H. Colour analysis and discrimination of laboratory prepared pasta by means of spectroscopic methods. Czech J Food Sci. 2011; 29:346-353.
     Google Scholar
  8. Santos AMPD, Carvalho RDS, ValeAED, Lima JS, Santos IF, Barbosa UA, et al. Microscopic and chemical characterization of flour of fruits: an alternative source for supplement feeding. J Food Process Technol. 2014; 5:1-6.
     Google Scholar
  9. Boitte JB, Hayert M, Michon C. Observation of wheat flour doughs under mechanical treatment using confocal microscopy and classification of their microstructures. J Cereal Sci. 2013; 58:365-371.
     Google Scholar