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The wheat flour-alfalfa blends containing 5 and 10 g/100 g of non-germinated and germinated alfalfa flour were examined in terms of nutritional composition (protein, lipid, starch, total dietary fibre), mineral profile, total phenolic content and antioxidant activity (ABTS, FRAP), and Mixolab rheological properties while the corresponding standard and sourdough breads were evaluated regarding physical and textural characteristics (specific volume, hardness, cohesiveness, springiness, gumminess, chewiness). The alfalfa flour inclusion resulted in increased protein (11.64–14.87%) and total dietary fibre (1.65–5.82%) contents in all blends, regardless of the alfalfa flour type but in a higher extent with 10 g/100 g inclusion level. Blends were characterised by improved mineral profile, total phenolic content (37.57–162.35 mg GAE/100 g) and antioxidant properties (ABTS: 4.37–232.79 µmol TE/100 g, FRAP: 138.05–539.16 µmol TE/100 g) particularly when non-germinated alfalfa flour in quantity of 10 g/100 g was used. Dough rheological properties were not significantly affected by the alfalfa flour type, whilst higher alfalfa flour inclusion level prolonged dough development time. Increased specific volume (2.63–3.62 cm3/g) with decreased crumb hardness (3.82–1.68 N) was recorded upon alfalfa flour incorporation and was more pronounced for sourdough bread. Overall nutrient composition of blends and technological features of the resulting breads were enhanced by alfalfa flour addition. [ABSTRACT FROM AUTHOR]

Consumers are becoming aware of health benefits of dietary fiber intake. In past years, the development of products containing different fiber is increasing. The aim of this research was to look into the effect of addition pea fiber to dough for crackers. Rheological and textural properties were evaluated. In order to develop dough in which wheat flour was partly substituted with pea fiber, it was necessary to increase water content. The addition of 5% and 10% of pea fiber affected intramolecular linkages of gluten and lowered elastic properties of the dough. Dough with addition of 30% of fiber was brittle, grainy and impossible to process.

Starch sweeteners are commonly used in many confectionery food products. Usually, considering the trend of producing low-energy and low-fat products, these products include fat mimetics. The aim of this study was to investigate the influence of fructose sweeteners on the development of functional properties of MCG fat mimetic, such as rheological and textural behavior. Fat mimetics made from Microcrystalline cellulose gel (MCG) consist of colloidal microcrystalline cellulose (MCC) and sodium carboxymethyl cellulose (NaCMC) and were observed in five different concentrations (1, 3, 5, 7, and 10%). The amount of starch sweetener in the mixture with the fat mimetics was 20%. The effect of pure crystalline fructose and a mixture of crystalline-fructose and high-fructose corn syrup in a ratio of 1:1 was analyzed. Rheological parameters significantly decreased with the application of starch sweeteners. By adding a mixture of starch sweeteners, this decrease was further increased by 10%. At higher gel concentrations of 5, 7, and 10%, the dominance of the elastic modulus G′ was preserved. Texture parameters such as firmness, consistency, cohesiveness, and viscosity index were reduced accordingly. The presence of starch sweeteners significantly disrupted the networking of the three-dimensional structure of the MCG gel and the proper hydration process during the formation of fat mimetics. [ABSTRACT FROM AUTHOR]

In addition to the fact that the "ideal" fat mimetic should have all functional characteristics of fat, it is preferable to be from natural sources. Dietary fibers from different natural sources have large potential for fat mimetic roles in low-energy food products. This work observes the functional characteristics of wheat-fiber-based fat mimetics (microstructure, rheological and textural properties), as well as the influence of addition of small molecules of additives, which are usually necessary during the production of food products. Different concentrations of fat mimetics were analyzed (from 1–10% of fibers) alone and also in combination with a mixture of additives (sodium ascorbate, trisodium citrate and sodium acetate). The concentration of hydrated wheat fibers above 3% formed viscoelastic gel structures with an antithixotropic type of Newtonian flow, with a domination of elastic properties (G′) and ability for partial recover. Firmness and consistency were also stable at higher fiber concentration (5–10%). Thus, these fat mimetics have high ability to imitate fat functional properties and to provide the role of continuous phase in food systems. The application of food additives significantly reduced all observed properties of wheat fibers' fat mimetics by disturbing the proper hydration process during gel formation and crosslinking of the three-dimensional structure of fat mimetics. [ABSTRACT FROM AUTHOR]

The evidenced relevance of dietary fibers (DF) as functional ingredients shifted the research focus towards their incorporation into gluten-free (GF) bread, aiming to attain the DF contents required for the manifestation of health benefits. Numerous studies addressing the inclusion of DF from diverse sources rendered useful information regarding the role of DF in GF batter's rheological properties, as well as the end product's technological and nutritional qualities. The presented comprehensive review aspires to provide insight into the changes in fiber-enriched GF batter's fundamental rheological properties, and technological, sensory, and nutritional GF bread quality from the insoluble and soluble DF (IDF and SDF) perspective. Different mechanisms for understanding IDF and SDF action on GF batter and bread were discussed. In general, IDF and SDF can enhance, but also diminish, the properties of GF batter and bread, depending on their addition level and the presence of available water in the GF system. However, it was seen that SDF addition provides a more homogenous GF batter structure, leading to bread with higher volumes and softer crumb, compared to IDF. The sensory properties of fiber-enriched GF breads were acceptable in most cases when the inclusion level was up to 7 g/100 g, regardless of the fiber type, enabling the labeling of the bread as a source of fiber. [ABSTRACT FROM AUTHOR]

The rheological behavior of dough supplemented with sugar beet fibers (SBF) and carob (pod) flour (CF), as fiber-rich by-products of the agricultural industry, was investigated using the standard Brabender extensograph and the Kieffer micro method. The addition of CF (0–20%) and SBF (0–6%) to the wheat dough formulation increased resistance to extension to about 75% and 55% respectively, while the combined effect of CF and SBF addition increased the dough resistance by up to 100%. The extensibility of the dough decreased in almost identical ranges (up to 40%), while the combined effect of CF and SBF addition had a stronger influence on the decrease in dough extensibility (75%). The evaluation of the correlation between the extensographic and the Kieffer micro method showed a high compatibility with regard to the results of the dough extensibility (r = 0.89, p < 0.05), but did not confirm the agreement of the results obtained in the resistance measurements (r = 0.13, p < 0.05). Considering that the absolute correlation between the two rheological methods used was not confirmed in this study, it is clear that the precise and complete definition of rheological properties requires the use of other methods, not only empirical but also fundamental. [ABSTRACT FROM AUTHOR]

Cellulose based fat mimetics play important role in substitution of fat in reduced fat food products. Production of food often includes application of additives. This work examines the influence of additives on the obtaining stable fat mimetic based on fibers of microcrystalline cellulose. Applied additives affect to the durability of food products and increase their shelf life. The influence of added additives was observed trough the rheological and textural properties of MCG fat mimetic, thus its further functional characteristics. Increasing concentration of fibers positively influenced to crosslinking during hydration and increased strength and consistency of obtained gel. But, application of small hydrophilic molecules of additives disturbed rheological and textural properties of fat mimetics. Obtained gels were still with the thixotropic behavior, but with significantly reduced viscoelastic properties, consistency, firmness and cohesiveness. Based on results, in the aim to ensure obtaining of stable, cross-linked gel of fat mimetic with adequate rheological, textural and functional properties, the mixture of additives is added after the hydration of fat mimetic gels, because of competition for polar water molecules between small additives molecules and available hydroxyl groups of cellulose chains. [ABSTRACT FROM AUTHOR]

The traditional hummus spread is obtained of cooked and grinded chickpeas, blended with susame paste (tahini), olive oil, lemon juice and spices. Hummus spread is a rich source of dietary fibers, polyunsaturated fatty acids, vitamins A, E and C, folate, minerals Mg, K and Fe. During production of such kind of spreadable food product, many factors can have influence on product behavior trough the all phases of production and to the final product quality. In this work, the influence of different technological factors on rheological, textural and sensory properties of hummus spreads made by certain recipes were examined, in the aim to achieve the maximum quality of final product. The way of preparation of raw materials, the composition of the spreads and the amount of water phase have been varied in the aim to define optimal rheological and textural parameters, to increase the production efficiency and in order to obtain desired sensory properties of final spread product. [ABSTRACT FROM AUTHOR]

Sunflower lecithin, together with commonly used soy lecithin, is a by-product of degumming of crude oil during refining process and can be defined as a mixture of phospholipids, residual oil and minor components. This paper investigated the influence of sunflower lecithin on rheological and textural characteristics of cocoa spread cream. Cocoa spread cream samples were made with the addition of 0.3, 0.5 and 0.7% of sunflower lecithin, with a milling time of 40 and 50 minutes in a laboratory ball mill. The results are compared with the results obtained for rheological and textural analyses of standard cocoa spread cream with soy lecithin added. Cocoa cream spread samples with the addition of all applied concentration of soy lecithin in milling time range of 40 to 50 minutes show lower values of thixotropic curve area, mean viscosity and Casson viscosity, but higher values of Casson yield stress, compared with cocoa cream samples with sunflower lecithin. Optimal concentration of soy lecithin is 0.5% with retention time of 40 minutes in laboratory ball mill, while addition of 0.7% of soy lecithin increases complexity of cocoa spread cream, but reduces Casson viscosity. On the other hand, the addition of 0.7% of sunflower lecithin and milling time of 50 minutes show the lowest values of rheological parameters. Cocoa cream samples with sunflower lecithin have lower values of textural parameters comparing with samples with standard soy lecithin. [ABSTRACT FROM AUTHOR]

A new kind of functional low-fat spread with hull-less pumpkin seed flour and fat replacer, in gel form, was defined in this work from a rheological and textural aspect. Observed spreads were systems with thixotropic flow behavior. All determined rheological parameters, except of yield stress, were affected by gel concentration and amount of gel. Increase in gel concentration caused increase in consistency of the spreads, their possibility to recover and contribution of elastic components in the structure of the spread. Increase in the amount of gel influenced the balancing factor and reduced influence in gel concentration. Statistically, this was confirmed as interaction of observed factors ( P < 0.05). Textural parameters confirmed that more gel provided softer consistency and increased the spreadability that could be optimized by concentration of applied gel. Optimal observed properties exhibited the spreads with low concentrated gel ranging from 0.5 to 1% and with a 70% gel amount. Practical Applications A press cake is the by-product of the mechanical process of oil extraction from pumpkin seeds. Hull-less pumpkin seed cakes are chemically and nutritionally valuable because of its high quantity of crude protein, fatty acids, minerals and energy. It is a very low-cost by-product. The exploitation of hull-less pumpkin seed cakes is poor, usually as animal feed. Possibilities of its application as a new low-cost biosorbent, for enzymatic protein isolation or as flour-like supplements are published. A number of low-fat spreads based on nuts, seeds and fat replacers are covered by published articles or patents. Oil seed cakes are an alternative to manufacturing low-fat spreads in terms of cost-effectiveness as well as for increased protein content. The presented results demonstrate the possibility of producing low-fat functional spread based on hull-less pumpkin seed flour, and a new form of utilization of this raw material. [ABSTRACT FROM AUTHOR]