Composite Flours-Characteristics of Wheat/Hemp and Wheat/Teff Models

Marie Hrušková, Ivan Švec, Ivana Jurinová

Department of Carbohydrates and Cereals, Institute of Chemical Technology, Prague, Czech Republic..

DOI: 10.4236/fns.2012.311193                

Abstract

Wheat/hemp and wheat/teff model composites were prepared as 90:10 and 80:20 w/w blends, using two different Czech commercial wheat flour samples (standards M, M1) and bright/dark forms of these non-traditional crops flour. The objective of this study was to determine the effect of alternative flour samples on the blend compositional profiles including dietary fibre content, on the technological quality described by modern Solvent Retention Capacity method and on laboratory baking test results. According to seeds composition, nutritional flour enrichment reached higher levels of protein (from approx. 13.0% about 30% vs. 6%) and fibre contents (from approx. 3.3% about 50% vs. 30%) in the case of hemp and teff samples. In terms of the SRC profile, the qualitatively better sample M was weakened by hemp flour additions, while somewhat worse sample M1 was improved by teff flour additions. Results from the baking test showed that the hemp composites were partly dependent on hemp flour form. Volumes of bread with bright hemp were diminished from 257 mL/100g up to 196 mL/100g, the products containing dark hemp increased up to 328 mL/100g. Teff-fortified bun volumes were evaluated in close range of 325 - 369 mL/100g against 381 mL/100g for standard M1. Sensorial score of wheat/hemp breads were worse owing to spicy taste and fatty aftertaste, while hay-like by-taste in wheat/teff bread could be tolerable of 10% in recipe.

Keywords

Wheat and Hemp Composite Flour; Protein Content; SRC; Dietary Fibre; Baking Test

Conflicts of Interest

The authors declare no conflicts of interest.

References

[1]	D. Best, “Whole Seed-Better than Whole Grain?” Cereal Food World, Vol. 54, No. 5, 2009, pp. 226-228. doi:10.1094/CFW-54-5-0226.
[2]	L. M. Ohr, “Good-for-You-Grains,” Food Technology, Vol. 63, No. 1, 2009, pp. 57-58, 60-61.
[3]	M. Hru?ková, “Wheat,” In: J. Prugar, Ed., Plant Products Quality on Beginning of the Third Millennium, VúPS, Brno, 2008, pp. 75-103.
[4]	M. Miranda, D. Bazile, F. Fuentes, A. Vega-Gálvez, I. Quispe, R. Lemus and E. A. Martínez, “Quinoa Crop Biodiversity in Chile: An Ancient Plant Cultivated with Sustainable Agricultural Practices and Producing Grain of Outstanding and Diverse Nutritional Values,” Proceedings of the 5th International Technical Symposium on Food Processing, Monitoring Technology in Bioprocesses and Food Quality Management; Nantes, 18-20 April 2011, p. 1180.
[5]	S. Mironeasa, G. G. Codina and C. Mironeasa, “The Effects of Wheat Flour Substitution with Grape Seed Flour on the Rheological Parameters of the Dough Assessed by Mixolab,” Journal of Texture Studies, Vol. 43, No. 1, pp. 40-48. doi:10.1111/j.1745-4603.2011.00315.x
[6]	C. Perlín, “Hemp as a Food,” Vyziva a Potraviny, Vol. 57, No. 4, 2002, pp. 121-122.
[7]	J. Pec and J. Dusek, “Composition and Utilization of Hemp Oil with Respect to Therapeutic Effect of Essential Fat Acids,” Praktické lékárenství, Vol. 4, No. 2, 2008, pp. 86-89.
[8]	M. I. Gomez and S. C. Gupta, “Millets,” In: L. Trugo and P. M. Finglas, Eds., Encyclopedia of Food Sciences and Nutrition, Elsevier, Amsterdam, 2003, pp. 3974-3979. doi:10.1016/B0-12-227055-X/00791-4
[9]	P. Arguedas Gamboa, “Teff Survey on the Nutritional and Health Aspects of Teff (Eragrostis Tef),” 2008. http://educon.javeriana.edu.co/lagrotech/images/patricia_arguedas.pdf
[10]	M. Hru?ková, I. ?vec and O. Jirsa, “Correlation between Milling and Baking Parameters of Wheat Varieties,” Journal of Food Engineering, Vol. 77, No. 3, 2006, pp. 439-444. doi:10.1016/j.jfoodeng.2005.07.011
[11]	T. Hofmanová, “Charakteristiky Směsí Vybranych Druh? Tuzemskych Obilovin,” Master’s Thesis, Institute of Chemical Technology, Prague, 2011.
[12]	I. Alaunyte, V. Stojceska, A. Plunkett, P. Ainsworth and E. Derbyshire, “Improving the Quality of Nutrient-Rich Teff (Eragrostis tef) Breads by Combination of Enzymes in Straight Dough and Sourdough Breadmaking,” Journal of Cereal Science, Vol. 55, No. 1, 2012, pp. 22-30. doi:10.1016/j.jcs.2011.09.005
[13]	C. S. Gaines, “Report of the AACC Committee on Soft Wheat Flour. Method 56-11. Solvent Retention Capacity Profile,” Cereal Foods World, Vol. 45, 2000, pp. 303306.
[14]	M. Kweon, L. Slade and H. Levine, “Solvent Retention Capacity (SRC) Testing of Wheat Flour: Principles and Value inPredicting Flour Functionality in Different Wheat-Based Food Processes, as Well as in Wheat Breeding. A Review,” Cereal Chemistry, Vol. 88, No. 6, 2011, pp. 537-552. doi:10.1094/CCHEM-07-11-0092
[15]	EFSA Journal, “Scientific Opinion on the Safety of Hemp (Cannabis Genus) for Use as Animal Feed,” EFSA Journal, Vol. 9, No. 3, 2011, pp. 1-41. http://www.efsa.europa.eu/en/efsajournal/doc/2011.pdf.
[16]	R. Phanacharoensawad, “The Potential for Growing Teff (Eragrostis Tef [Zucc.] Trotter) in Thailand,” Asian Journal of Food and Agro-Industy, Vol. 2, 2009, pp. S125-S131. http://www.ajofai.info/Abstract/The%20potential%20for%20growing%20tef%20%28eragrostis%20tef%20%28zucc.%29%20trotter%29%20in%20thailand.pdf.