The objective of this work was to use the swelling curve test for the evaluation of the baking value of rye flours commonly used for bread production. Ten rye flours obtained from industrial mills were used for investigations. The parameters characterized the flour properties such as protein content, ash content, pentosans content, falling number, amylograph peak viscosity and water absorption were determined. Besides, the swelling curve test and the baking test were performed. The results showed significant relations between flour properties and bread quality. Especially, all viscosity parameters obtained on the basis of swelling curve could be used for rye flour baking quality evaluation. Especially, the logarithmic decrease of viscosity was negatively correlated with crumb bread hardness after 1 and 4 days after baking (r = − 0.802 and − 0.789, respectivietly). Besides, the breads with the lowest volume were obtained from flour with low amylograph peak viscosity and low logarithmic decrease of viscosity. In summary, the swelling curve test can be used as a useful tool for the evaluation of baking quality of rye flour.
The aim of this study was to assess the effect of different levels of production technology intensity on grain quality of four species of spring wheat: common wheat (Triticum aestivum ssp. aestivum L.), durum wheat (Triticum durum Desf.), spelt wheat (Triticum aestivum ssp. spelta [L.] Thell) and dicoccum wheat (Triticum dicoccum [Schrank] Schübler). Two levels of production technology intensity were applied in the experiment: medium mineral fertilisation (N -70, P -30.5 and K -99.6 kg ha -1 ), seed priming and weed control; high mineral fertilisation (N -140, P -30.5 and K -99.6 kg ha -1 ), seed priming, weed control, two treatments against diseases, insecticide and growth regulator. Tested wheat grains were collected from the crop years 2011-2013. To assess the baking quality of tested wholegrain flour, gluten quantity and quality, falling number and Mixolab parameters were determined. Rheological properties of wholegrain wheat dough were affected mostly by wheat species and crop year. Among the analysed species, spelt wheat was characterised by the highest wet gluten content, amylolytic activity (C4) and starch retrogradation (C5). Dicoccum wheat was characterised by the lowest gluten content and the lowest resistance time of dough (T1) and stability. Dicoccum wheat had also the highest protein weakening (the lowest Cs and C2). Crop year had a significant effect on starch gelatinisation (C3), amylolytic activity (C4), retrogradation (C5) and gelatinisation time (T3-T2). Wheat cultivated under high level of production technology intensity was characterised by higher gluten content and lower final temperature of starch gelatinisation (D3).
Spelt grain has high nutritional value, but the rheological properties of dough made from spelt flour remain insufficiently investigated. Most studies have focused on comparing various breeding lines and accessions of spelt with selected conventional varieties. The aim of this study was to analyze the rheological properties of dough made from the flour of 14 winter and one spring spelt varieties cultivated today compared with two reference varieties of common wheat. The analyses were performed by the Mixolab test. In comparison with common wheat, spelt varieties were characterized by significantly lower values of the gluten index (16–42 versus 87%), Zeleny index (23–28 versus 46 cm3), and kernel vitreousness (5–35 versus 51%). Doughs produced from spelt and common wheat flour differed significantly it their rheological properties. Mixolab profiles demonstrated significant variations in the values of the retrogradation index (2–8), amylase index (1–8), water absorption index (0–6), and gluten+ index (1–7) across the tested spelt varieties. Principal component analysis revealed that all six Mixolab indicators strongly discriminated wheat and spelt varieties. The results clearly indicate that some modern varieties of spelt have high breadmaking potential. They are also characterized by relatively high variation in the analyzed technological properties of grain and flour.
The aim of this study was to evaluate the baking value of rye flours from industrial mills and to indicate which rye flour quality parameters are the most important predictors of wholemeal rye bread quality for commercially milled rye grains. Ten wholemeal rye flours, which were characterized by ash content ranging from 1.43% to 2.42% d.m. (dry mass), were used for the study. The parameters that characterize the flour properties and the baking test were assessed. The study revealed that for the analyzed commercial rye flours, the falling number test and the amylograph properties are insufficient parameters for predicting the quality of wholemeal rye bread. The manufacture of good quality wholemeal bread requires the use of rye flour with superior quality, such as fine granulation, low protein content, low total and insoluble pentosans content, and, in particular, a high percentage of water-soluble pentosans content. Breads with a higher volume were obtained from rye flours that were generally characterized by lower protein content, lower total and insoluble pentosans content, and higher water-soluble pentosans content. Flour granulation and the percentage of water-soluble pentosans content especially, had a significant impact on bread’s hardness of crumb and the hardness of crumb’s increase during bread storage.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
hi@scite.ai
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.