Acta Univ. Agric. Silvic. Mendelianae Brun. 2016, 64(3), 803-812 | DOI: 10.11118/actaun201664030803

Fermented Dough Characteristics of Wheat-barley-hemp Composites. Comparison of Two Dosages of Barley and Hemp Wholemeal/Flour

Marie Hrušková, Ivan Švec

Department of Carbohydrates and Cereals, Faculty of Food and Biochemical Technology, University of Chemistry and Technology Prague, Technická 5, 166 28 Praha 6, Czech Republic

Wheat flour substitution by barley one led to shortening of fermentation and leavening times (about 14-57% and 35-83%, respectively) as well as to lessening of dough volumes (about 25-75%), based on lowered protein quality (Zeleny value). Addition of barley flour affected specific bread volume; diminishing for wheat-barley blends 70:30 and 50:50 reached 30% and 43%, respectively. Volume of bread prepared from wheat-barley blend 70:30 enhanced by dehulled hemp wholemeal was the highest within the tested tri-composites set, achieving 130% of wheat-barley control; other hemp products caused the parameter decrease (from 8 to 33%). Within a group of bakery products containing 50% of barley flour, hulled hemp wholemeal partially supressed negative effect of barley flour - specific bread volumes increased about ca 15%. Commercial fine hemp flour samples demonstrated a reversal influence - its addition resulted into lower buns size than wheat-barley control (about 3-34%). Between wheat flour and both groups of flour tri-composites, PCA confirmed differences in dough and bread technological quality. Specific bread volume could be predicted according to maturograph dough elasticity, dough or bread OTG volumes.

Keywords: wheat composite flour, barley, hemp, fermented dough, specific bread volume, principal component analysis

Grants and funding:

The research was developed under grant No. QI 111 B053 of the NAZV, Czech Republic.

Prepublished online: July 4, 2016; Published: July 1, 2016  Show citation