Uticaj sastojaka na bazi liofilizovanog bobičastog voća na fermentativna svojstva testa i pokazatelje zapremine hleba

Recent advances in application of modified starches for breadmaking

In this work, different proportions of green wheat flour were used instead of flour to make steamed bread and the physicochemical and nutritional properties of different mixed flours were compared. The effect of green wheat on the quality of dough and steamed bread was evaluated, and a new staple food of green wheat steamed bread was developed. The gluten and elasticity of green wheat flour dough will decrease and the gluten network structure of the dough appeared holes and became uneven. Compared with full wheat steamed bread, as the addition of green wheat flour increased, the sensory quality, specific volume, and elasticity of steamed bread decreased, while firmness, gumminess, and chewiness increased and the flavor had a significant change. Meanwhile, the addition of green wheat flour can significantly reduce the glycemic index of steamed bread, which was beneficial to hinder the violent fluctuation of blood sugar. After adding 20% green wheat flour, the GI value decreased from 81.253 to 73.237. Furthermore, when the green wheat flour was added at 10%, the overall quality of the steamed bread was ideal, which laid a theoretical foundation for industrial production and application. Novelty Impact Statement The application of the green wheat flour to the preparation of steamed bread can improve the nutrition and reduce the predicted glycemic index of steamed bread, which will provide a theoretical reference for the industrial production of green wheat flour for steamed bread making.

Wheat bran is rich in dietary fiber, which improves the flour nutritional content and also endows the flour with a richer flavor. However, a high content of insoluble dietary bran fiber can easily and significantly reduce the processing and edible quality of flour products. This study was conducted to explore ways to decrease the negative effects of adding bran to dough. Basidiomycete strain BS-01 was used to ferment the wheat bran. The surface structure of the bran was examined by scanning electron microscopy, and the fermented bran was incorporated into the wheat flour at various concentrations. The mixed flour farinographic and extensographic characteristics, dough rheological properties, and the specific volume, color, and textural properties of the steamed bread were determined and analyzed. The results suggested that adding an appropriate quantity of fermented bran improves the characteristics of the dough and the quality of the steamed bread compared to those with unfermented bran. The fermented bran effectively decreased the negative impacts exerted on the farinographic and extensographic characteristics of the mixed flour and exerted a positive influence on the dough viscoelasticity and bread specific volume.

The object of this study is the quality of bread using wheat flour mixed with sorghum flour. The implementation of the task of stable provision of the population with good quality bread and high nutritional value is based on improving the technology of bread using sorghum flour in accordance with the global trend of safe and healthy nutrition. The results on the chemical composition and nutritional value (amino acid content, mineral composition, and vitamins) of sorghum flour were obtained, a comparative analysis with wheat flour was carried out. An analysis of the amylographic characteristics of flour and dough with the addition of various amounts of sorghum flour, improvers, and enzyme preparations was carried out. As a source of nutrients, the effect of sorghum flour on the rheological and baking properties of wheat dough was studied. The effect of the studied flour on the quality of finished bread was established. The complex effect of the Emceft improver and the KAZenzym enzyme preparation on the quality of dough and bread, including from sorghum flour, was studied. For the first time, the use of sorghum flour of the Kazakhstan 20 variety for the production of bread in combination with an improver and an enzyme preparation has improved the chemical composition, rheological and baking properties of the dough. Research shows that bread with the use of sorghum flour diversifies the diet and promotes human health due to its nutritional composition and potential as a gluten-free food. The scope and conditions of practical use of the results are the possibility of using sorghum for bread making. Achieving these capabilities is based on the developed technology of bread in combination with an improver and an enzyme preparation

Nowadays, it is very popular to enrich biscuits with less typical ingredients and thus increase their nutritional value. The aim of this work was to monitor the effect of the addition of lyophilized Saskatoon berries (Amelanchier alnifolia Nutt.) mixed with wheat flour T650 in different proportions on the technological quality of the flour (moisture, ash, falling number, crude protein, wet gluten, acidity) and to compare the chemical (aw, dry matter, crude protein, ash) and sensory parameters (appearance, aroma, taste, consistency, overall perception) of biscuits prepared without and with 5, 10 a 15 % additions of this fruit. With the increased addition of Saskatoon berry to the flour mixture, its moisture content decreased. Compared to the control sample, the ash content increased from 0.59% (control) to 0.87 % (15%) with the addition of fruits, as did the acidity of the flour (p < 0.05). On the contrary, with the increasing proportion of the addition of the powder of this fruit in the mixture with wheat flour, some technological parameters decreased (p < 0.05) (gluten content and its quality, falling numbers). The ash content of the biscuits increased from 0.88 (control) to 1.14 % (15 %), but the crude protein content decreased with increasing Saskatoon berry addition. In biscuits with the addition of this fruit, the value of water activity was significantly reduced from 0.57 (control) to 0.31 (15 %) (p < 0.05). Based on organoleptic evaluation, the replacement of up to 10 % and 15 % of wheat flour with Saskatoon berry powder improved the sensory properties (appearance and taste) of the prepared biscuits compared to control wheat biscuits. We can recommend this non-traditional fruit for application in the production of biscuits (adding 10 and 15 %), for its color and nutritional composition it can increase biscuits attractiveness and become a perspective when designing new products.

Purpose: This study was to identify the major quality parameters of whole wheat flour suitable for making whole wheat bread. Methods: The commercial twelve whole wheat flour samples were analyzed for physicochemical characteristics and bread-baking performance. Results: The tested samples showed a wide range of ash contents, water, sodium carbonate solvent retention capacity (SRC), sodium dodecyl sulfate (SDS)-sedimentation volumes, particle sizes, and colors. The bread-making performance of the flours also showed significant variations in crumb colors, dough heights, bread heights, and bread volumes. The correlation and principal component analyses of the quality characteristics of whole wheat flour and whole wheat bread showed that the dough height and the bread height and volume correlated negatively with the ash content and water SRC but positively with the SDS sedimentation of the whole wheat flour. However, the firmness of the bread showed the opposite relationship. Conclusion: In conclusion, the ash content, water SRC, and SDS sedimentation volume of the whole wheat flour can be used as valuable indicators to predict the quality of the whole wheat bread.

There are many edible fruits and berries in Latvia, which are still underutilized for commercial growing and processing in food products. Some of them are known for their medical value (e.g., Rosa rugosa and Aronia melanocarpa) or are cultivated in home gardens, but there is little information about nutritional value and suitability of minor fruits for developing products of high nutritional quality. The aim of this research was to evaluate the biochemical composition of minor berries and small fruits grown in Latvia and compare it with antiradical activity of the sample. The experiments were done at the Latvia University of Agriculture and at the Latvia State Institute of Fruit-Growing. Contents of titrable acids, soluble solids, ascorbic acid, total phenols, anthocyanins, carotenoids, tannins, and antiradical activity (DPPH) of fresh and frozen fruits of saskatoon (Amelanchier spicuta), honeysuckle (Lonicera ssp.), golden currant (Ribes aureum) 'Laila', rosehips (Rosa rugosa), hawthorn (Crataegus submollis), chokeberry (Aronia melanocarpa), black elder (Sambucus nigra), wild rowanberry (Sorbus aucuparia), and red bilberry (Vaccinium vitis-idae) 'Coralle' were analysed. Fresh honeysuckle and frozen chokeberries had the highest anthocyanin content, and red bilberry cultivar 'Coralle' and chokeberry had the highest total phenol content. Rosehips had the highest contents of carotenoids and ascorbic acid. Chokeberry, rosehips, and saskatoon berry had the highest antiradical activity, and the high antiradical activity correlated with high contents of total phenols (r=0.81). Several of the tested fruits had very high nutritional value (rosehips - high contents of ascorbic acid, phenols, caroteoids, and high antiradical activity; chokeberry - high contents of phenols, anthocyanins and high antiradical activity; saskatoon berry- high contents of anthocyanins and high antiradical activity; honeysuckle - high contents of anthocyanins and phenols). Most of these berries have to be evaluated for stability of nutritional value in different products and, finally, new products developed for enlargement of a healthy food assortment.

Extensional rheological properties in mixed and fermented/rested dough and relationships with steamed bread quality

Strain hardening of wheat flour (WF) proteins during fermentation and baking is at the basis of the excellent quality of wheat breads. Yet, there are good reasons to use rye flour (RF), such as its high content of dietary fiber and other bioactives. However, rye proteins lack the ability to form dough with sufficient strain hardening capacity under extension, which partially explains the inferior quality of rye breads. A promising strategy to make high-quality breads with high nutritional value is the use of WF and RF blends. Despite this, the rheological behavior of WF/RF bread doughs has not yet been investigated. This study examines their rheology by non-linear uniaxial extensional and small-amplitude oscillatory shear measurements, and relates these measurements to the quality of the resulting breads. The strain hardening index (SHI), derived from extensional measurements, is expressed as the transient extensional viscosity at maximum strain [ηe+(εmax)] relative to the linear extensional viscosity extrapolated to maximum strain [ηe0+(εmax)]. Both the SHI and bread volume decreased when the level of RF in the blend increased. As an example, replacing 60% WF by RF led to a relative decrease of the SHI and bread volume of 34 and 64%, respectively. The decrease of the SHI is correlated to an increase in ηe0+(εmax). Comparison of the extensional curves of doughs made with blends of WF and RF and doughs made with blends of WF and wheat starch (WS) further revealed that RF components play a major role in the rheology of the doughs. In conclusion, it was found that WF/RF blends need to contain at least 60% WF to obtain bread of proper quality.

The article shows the benefits of consuming wholemeal products. However, the level of consumption of these products is low. The reason is primarily the low quality of products: the rough structure of the crumb, rapid hardening. Therefore, there is a need to improve the quality of bread from wholemeal flour. The indicators of quality of wholemeal flour produced by national enterprises are investigated in the work. Analysis of packaging and labeling of test samples of wholemeal flour (according to the manufacturer) showed that some of them are produced in accordance with GSTU 46.004-99 (“Wheat flour. Specifications”), and the quality of other samples is controlled by the manufacturer's own specifications. It should be noted that there are no Ukraine's standards for wholemeal wheat flour. Standard GSTU 46.004-99 (“Wheat flour. Technical conditions”) apply only to wheat graded and dark flour. It was found that the ash content of the studied samples of whole-meal flour (WMF) from wheat and spellta grain is in the range of 0.80–1.46%; paricle size: the residue on the sieve No. 067 – within 0.1–1.7%, the passage of the sieve No. 38 – within 12–34%. The influence of particle size and gluten of wheat and spelta whole-meal flour on its baking properties has been studied. It has been found increasing the volume and porosity of the bread while the particle size decreases. The largest bread volume (400–460 cm3) and porosity (67–68%) had the samples of flour with the smallest particle size (sieve residue No. 067 not more than 1 %, sieve passage No. 38 more than 15–20 %). For samples with a larger particle size (sieve passage No.38 – not more than 15-20 %), the volume of bread and its porosity decreased by 1.2–1.3 and 1.1–1.2 times, respectively. Analysis of gluten quantity and quality effect showed that a rather high quality of wholemeal bread from wheat WMF can be obtained with a crude gluten content in flour of at least 24–26% with a gluten quality of Gluten deformation index (GDI) in a range of 60–80 units. For the production of bread from spelta WMF it is recommended to use WMF with a crude gluten content of at least 30% with a gluten quality GDI in a range of 60–100 units.

In order to yield influential information on the most recommended use of BGF, which so far still questioned, this preliminary study was aimed to investigate the physicochemical and functional properties of mixed flour of BGF and wheat flour (WF). A total of nine mixtures of WF: BGF of (90%:10%; 80%:20%; 70%:30%; 40%:60%; 50%:50%; 40%:60%; 30%:70%; 20%:80%; 10%:90%) were produced, where single WF and BGF were used as controls. This research revealed the different amount of BGF and wheat flour in the mixed flour showed the significantly different value of functional and rheological properties attributes, such as bulk density, CI, HR, WAI, WSI, SP, OAC, peak viscosity, trough viscosity, breakdown viscosity, final viscosity, setback viscosity and peak time. We have inferred to some previous studies and speculated that the difference in functional and rheological properties could be caused by the different amylose and amylopectin amount in the mixed flour. As far as we know that this present study was the first study on the mixed flour of BGF and wheat flour, therefore we suggested a more comprehensive study such as investigation of baking performance and bread qualities.

The use of whole wheat and soybean flour blends in the production of functional breads was studied. The flour blends of whole wheat and soybean were composites at replacement levels of 10, 20, 30 and 40% while the whole wheat flour bread (sample A) served as control. The proximate composition of the various flour blends used for the preparation of the breads were determined using standard methods. The bread loaves were produced using the straight-dough procedure and were subsequently evaluated for their nutritional composition and sensory attributes. The physico-chemical analyses results obtained showed an increase in the range of 11.0% for moisture, 4.37% for protein, 2.40% for fat, 2.35% for crude fibre, 0.85% for ash and a decrease in carbohydrate and energy contents by 20.92 and 44.60% respectively. There was also a decrease in bread volume and dough expansion by 64.50 and 13.0% respectively, with progressive inclusion of the soybean flour. The sensory analysis showed that there was no significant difference observed between the whole wheat bread and the soy bread samples in the sensory attributes of crust colour and crumb appearance, While significant difference (p<0.05) was observed in texture, flavour and overall preference respectively. It was concluded that a substitution of 10% soy flour into wheat flour gave the bread with the best overall quality acceptability. Key words: Whole wheat, soybeans, composite flour, functional bread, physico-chemical composition, sensory attributes.

Overozonized wheat flour was added to unozonized wheat flour at three different ratios (M1: 1 : 1; M2: 1 : 2; and M3: 1 : 3), and the mixed flour was evaluated for quality properties, including pH, protein component, dough property, pasting property, and steamed bread quality. The pH of the mixed flour gradually increased as the addition content of overozonized flour decreased. The three mixed flour had higher insoluble polymeric protein (IPP) content than unozonized flour. Compared with overozonized flour, M1 and M2 flour did not show a significant difference in IPP content, but M3 flour exhibited a decreased IPP content. Three mixed flour had higher dough development time and dough stability time than both unozonized and overozonized flour, and there was no significant difference among three mixed flour in these two dough parameters. Peak, trough, and final viscosities of the three mixed flour were between those of unozonized and overozonized flour. Steamed bread of three mixed flour had larger specific volume and better texture than that of overozonized flour, with steamed bread of M3 flour showing the best attributes. Among the three mixed flour, M1 flour was the closest to overozonized flour in volatile compounds of steamed bread. These results suggested overozonized flour can be mixed with unozonized flour to decrease the deterioration of overozonization on the dough and food-making properties of wheat flour, but the mixing ratio should be taken into consideration to obtain a better quality.

Background and ObjectiveDough mixing properties are crucial in determining the usability of wheat flour. Currently, many industrial sourced chemicals are used as additives to improve the mixing stability of dough. This study aims to evaluate the effect of adding chickpea flour on mixing tolerance and dough strength improvement based on 20 different wheat genotypes. The effects of different types (i.e., kabuli and desi) and amounts (1.5%, 3.75%, 7.5%, 15%, and 30%, w/w) of chickpea flours and kabuli chickpea fractions (7.5%) were further studied. Mixograph, dough strength and extensibility, and baking test of selected treatments were performed.FindingsIncorporating chickpea flour at a level of 7.5% (w/w flour basis) or lower significantly improved (p &lt; .05) the mixing stability and dough strength of different wheat flours. Adding the insoluble fraction of the chickpea flour resulted in better stability and dough strength compared to other fractions, while adding the soluble fraction of chickpea flour weakened the dough. At the optimum incorporation level (7.5%) or lower, the inclusion of chickpea flour did not negatively alter the physical (bread volume), texture (hardness), or taste attributes of the bread.ConclusionThe results demonstrate that adding chickpea flour can improve dough mixing properties, particularly for weak/normal wheat flour, without compromising the quality of bread. The optimal chickpea flour incorporation level in refined wheat flour is 7.5%. Chickpea flour incorporation could also assist bakers in case of overmixing the dough.Significance and NoveltyThis study portrays the use of natural ingredients to improve dough mixing properties, providing bakers and scientific community with natural alternatives to enhance wheat flour mixing properties while improving the quality and nutrition of the flour as chickpea is a protein‐rich legume.

Purpose. To study the quality formation in bread from different flour of spelt wheat (premium, whole-wheat) depending on the variety and line.&#x0D; Methods. Laboratory, mathematical and statistical, physical and chemical.&#x0D; Results. The bread volume made from high-grade flour varied from 303 to 523 cm3, which corresponds to 1.0–7.6 points depending on the variety and line of spelt wheat. The bread volume made from whole-wheat flour was 10–20% less than the bread volume made from premium flour. The average bread volume obtained from whole-wheat flour of ‘Zoria Ukrainy’ variety was 470 cm3, while low bread volume was obtained from flour of ‘Shvedska 1’ variety and LPP 3132, LPP 3117, TV 1100 lines which corresponded to 2.8–3.2 points. In other varieties and lines, these indicators were very low and ranged between 270 and 328 cm3 or less by 142–200 cm3 compared to the standard variety. The convexity of pan bread made from high-grade flour was the highest in ‘Zoria Ukrainy’ spelt wheat variety and NAK 34/12‑2 line: 0.49 and 0.54, respectively, which corresponded to 5.0 points. Significantly higher indicators were found in P 3, NAK34/12–2, and LPP 3122/2 lines: 0.38–0.51 (1.0–5.0 points). In ‘Shvedska 1’ variety and five lines, the indicator of bread convexity varied from 0.27 to 0.37 (from 3.0 to 4.0 points). In other varieties and lines it was significantly lower (0.07–0.21) than in the standard. The indicator of bread convexity from whole-wheat flour in ‘Zoria Ukrainy’ spelt wheat variety was 0.37 which corresponded to 4.0 points. Significantly higher indicators were found in P 3, NAK34/12–2 and LPP 3122/2 lines: 0.38–0.51 (1.0–5.0 points). In ‘Shvedska 1’ variety and five lines, the bread convexity indicator varied from 0.27 to 0.37, that corresponds to 3.0–4.0 points). In other varieties and lines it was significantly lower (0.07–0.21) than in the standard. Culinary quality of bread was high in all samples: 7.2–8.4 points (80–93% of the maximum value). However, the highest quality had the bread made from ‘Zoria Ukrainy’ variety, LPP 3132, NAK34/12–2, and TV 1100 lines. The overall culinary quality of whole-wheat bread was very high as it varied from 8.3 to 9.0 points. However, the bread made from ‘Shvedska 1’ variety and LPP 3117, LPP 3122/2, P 3, LPP 3132, NAK34/12–2 lines had the highest quality (9.0 points).&#x0D; Conclusions. Gloss index of bread surface and its overall estimate is affected by the protein content in grain. Gluten content has a slightly smaller effect on bread quality. In addition, crust surface, bread texture, the overall estimate of bread quality is also affected by the gluten deformation index. Bread obtained from ‘Zoria Ukrainy’ flour, LPP 3132, NAK34/12–2, and TV 1100 lines had the highest overall culinary evaluation.