جستجوی مقالات مرتبط با کلیدواژه « کنجاله ارده » در نشریات گروه « کشاورزی »

Today demand for low-fat and low-cholesterol foods was increased, and that eggs are the most important source of cholesterol in the production of all types of cakes, it seems partial or total removal of eggs and replacing by other natural ingredients is very important in the formulation of cakes. Therefore, the aim of this study was to investigate the effect of completely replacing eggs in the cupcake formulation by tahini meal (one of the byproducts of the sesame oil extraction industry) in levels of 0, 5 and 10%, and lecithin emulsifier addition in levels of 0, 0.25 and 0.5% on batter properties and quantitative and qualitative characteristics of final product in a completely randomized design with factorial arrangement (P≤0.05).The results showed that the amount of batter viscosity, moisture, specific volume and porosity of the sample increased and batter specific weight decreased by adding tahini meal and lecithin. Meanwhile, the increase in tahini meal reduced the L* value and increased a* value of the cake samples. While the lecithin increased the L * value of crust. The evaluation of texture properties during one day and one week after baking also indicated that the addition of these two compounds reduced the firmness of samples. The panelists also noted that two samples containing 10% of tahini meal and 0.25% and 0.5% of lecithin had the sensory acceptability. Therefore, by choosing the right ingredients to add these compounds to the formulation, a product by desirable texture and sensory properties can be produced

Today, preventing the loss of by-products of food industry and their optimal use in order to increase the quality of food has attracted the attention of many researchers. So the aim of this study was to improve the quantitative and qualitative characteristics of gluten-free fermented doughnut based on rice flour by adding corn gluten meal and tahini meal on three levels of 0, 5 and 10%. The results showed by  increasing the amount of corn gluten meal and tahini meal, the amount of protein and peroxide of the final product increased and decreased respectively. Also, The results showed that only increasing the amount of tahini meal in the formulation increased the moisture content, specific volume and porosity and decreased the firmness of the tissue, while the addition of corn gluten meal had no significant effect on these parameters. On the other hand, only increasing the amount of corn gluten meal in the formulation reduced the fat content of the final product and adding tahini meal did not cause a significant change in this regard. The results also showed that with increasing the amount of corn gluten meal and tahini meal, the amount of L* and a* crust values decreased and increased, respectively and the addition of corn gluten meal increased the amount of b* crust value. Finally, introduced two samples containing 5% corn gluten meal and 10% tahini meal and the sample containing 10% tahini meal and without corn gluten meal as the best sample. So, it can be concluded that the use of these meal in addition to the development of industries and economic productivity, improves the quantitative and qualitative characteristics and enhances the nutritional value of the final product.

In our country, the limited cultivation of durum wheat, the use of bread wheat instead of durum wheat and the lack of suitable technology for the production of semolina and in another direction, despite the high nutritional value, are considered as a by- product of the industry. Therefore, in this research, the effect of adding Protein Isolated of tahini meal on 0, 2.5, 5.0, 7.5 and 10% levels to two types of semolina flour made from durum wheat Behrang variety and wheat bread of Mehregan variety in production Pasta was studied in a completely randomized design with factorial arrangement (p <0.05). The results showed that the addition of Protein Isolates of tahini meal significantly increased the protein content of flour in both Mehregan and Behrang cultivars. Also, the minimum cooking time and cooking number increased significantly at 10% level, but at levels 2.5, 5.0 and 7.5 this increase was not significant in both wheat cultivars. cooking loss was not significant in Mehregan cultivars but the lowest cooking loss was observed in Behrang cultivar with 10% protein content. The color index L * and b * were not significant in the treatment of methionine at levels of 7.5 and 10%. In the Behrang treatment, L * and b * were decreased by increasing protein isolation. Overall acceptance score for sensory evaluation was not significant in treatments containing 7.5 and 10% protein. Based on the results, it is recommended to use Mehregan variety as a substitute for Behrang cultivar at the level of 7.5% protein supplementation for the pasta enrichment.

The tendency of people to diet to prevent weight gain and maintain health has attracted the attention of many researchers and manufacturers, and the fat has the highest caloric value in calculations, its reduction in formulation it has attracted. So in this study production of low-fat cupcake by replacement 50% of oil by 0, 10 and 20% tahinimeal, and replacing the water used in the dough cake by kombucha beverage in three levels of 0, 50 and 100% on dough characteristics and physicochemical, texture, visual and sensory properties of final product in a completely randomized design with factorial arrangement were invistigated (P≤0.05). The results showed by increasing the amount tahinimeal, viscosity and specific gravity of the batter increased and decreased respectively. Also the specific volume and porosity increased by increasing amount of tahinimeal. The results showed that the sample containing 20% of tahinimeal and replacement of 100 kombucha beverage had the least firmness during 1 and 15 days after baking. On the other hand, the results indicated that by addition tahinimeal and kombucha beverage, the crust L* and a* values were decreased and increased respectively. Finally, the panelists introduced a sample containing 20% of tahinimeal and 100% kombucha beverage as the best sample. In the next step, by comparing the characteristics of the best low fat cake by the control sample (without additive and without oil substitution) increased protein content, decreased fat content and decreased peroxide levels were observed. Therefore, due to the positive results of this study, can be produced the low-fat cupcake that enriched by tahinimeal and kombucha beverage which has desirable qualitative and quantitative properties and reducing health hazards caused by using shortening.

Nowadays, one of the most important nutritional problems in different societies is the protein mal-nutrition. Since bread is the main food material being consumed in all over the world, bread enrichment using the grains rich in protein such as sesame seeds would be an appropriate alternative. However, addition of sesame products such as Tahini meal would cause some technical difficulties such as dough stability, water absorption, dough extension time, etc. in bread manufacturing processes.In this study the effect of addition of xanthan gum to on physical and textural properties of Baguette bread containing tahini meal was investigated.

Wheat flour and tahini meal were supplied from Damghan and Ardakan cities, respectively. They were then refrigerated prior to baking process and different chemical tests were carried out according to standard methods. Protein was measured based on Kejeldahl method. Moisture content as well as ash content were determined using oven method.Raw fat was calculated according to AACC-No. 30-10 and raw fiber was measured using appropriate instrument (Scientific velp-FIWE6 F30530201). Starch determination was carried out using Small universal polarimeter (SUP-Germany). Xanthan gum was purchased from Provisco Ltd. (Switzerland) in food grade quality. Bread yeast (Saccharomyces cerevisiae) was also supplied in dried form. All other chemical enhancers were purchased from Merck Ltd. (Germany). Baguette dough was produced from mixture of wheat and Tahini meal flour based on protein content and the amount of protein in final dough was increased from 10.28% in flour free of tahini meal to 12, 14 and 16% in different treatments. The rest time for all flour samples was fixed at 15 min and the baking process was carried out for 15 min at 300°C. Baked breads were exposed to room temperature for two hours and then were packed using poly-ethylene (PE) film for further tests. Specific volume of bread samples was measured using rapeseed displacement method (AACC, No. 54-30, 2000). Samples porosity was determined using image processing techniques. Samples were cut to 2cm×2cmcubes and an appropriate scanner (Canoscan 8800F, Japan) with 300 pixel resolution was used to acquire the images for further process using Image J(1.6r, 2010). Apparent color for the baguette samples (in terms of CIE ‘L*’- lightness,“a*” - redness and greenness, and “b*”- yellowness and blueness) were also measured using image processing techniques (Image J, 1.6r, 2010).Texture profile analysis (TPA) test was carried out using a texture analyzer (QTS Texture Analyzer, CNS Farnell, Hertfordshire, UK) to study the effect of xanthan gum and tahini meal on parameters such as hardness, gumminess and cohesiveness in all baguette samples.

ANOVA test showed the significant effect of xanthan gum and tahini meal on the porosity of samples. The porosity of samples containing less than 0.5% xanthan gum at all tahini meal levels, was significantly less than control sample.Similar results were obtained in the case of specific volume meaning that the employed treatments have significant effect on bread’s specific volume. Increasing tahini meal from 9.45% to 14.53% caused significant decrease in specific volume. This could be due to the weakness of dough gluten matrix. These results are in agreement with other works reported by other researchers (Paraskevopoulouet al., 2010; Mohammad Idrisset al., 2012; and Guardaet al., 2004). The results obtained for apparent color of bread core also showed the effect of xanthan and tahini meal. The only exception was found in case of a* value when studying the effect of xanthan gum, meaning that xanthan gum has no significant effect of this parameter. In the case of apparent color in bread crust, the studied treatments (xanthan gum and tahini meal) showed significant effect on all color parameters. Different textural properties of baguette samples including hardness, gumminess and cohesiveness were also measured.

The results indicated obvious effect of xanthan gum and tahini meal levels on these mentioned parameters. Increasing tahini meal and xanthan gum levels would increase hardness as well as gumminess. However, addition of xanthan gum and tahini meal cause significant decrease in cohesiveness. This could be due to dilution effect of these substances which decrease the concentration of protein matrix existed in flour’s gluten.