جستجوی مقالات مرتبط با کلیدواژه « tortilla » در نشریات گروه « صنایع غذایی »

Mixing wheat flour with other food sources in order to achieve useful nutritional properties to improve physiological and metabolic effects of Cereal products is highly significant. Flour tortilla is a light, flat, non-fermented, and round bread which is mainly made of wheat, Corn and barley flour. In this research, the Mixture Design Technique was used to analyze the effect of simultaneous replacement of soy flour and whey powder on textural and sensory properties of flour tortillas. The independent variables were wheat flour (٪0-%100) soy flour (5%-15%) and whey powder (2 - %%10) .The results show that changing the ratio of all variables had significant effects on the physicochemical properties studied, statistically. By increasing the replacement level a decrease in Aw of product was observed. So that, use of whey powder and soy flour in their highest proportion, significantly reduced the sample thickness whereas adding high proportion of wheat flour led to the production of thicker samples. The results from the TPA tests revealed that there is a meaningful relationship between all variables and texture properties. Samples containing less whey powder demonstrated better mouthfeel and taste. Finally, optimization displayed  that the best formulation of the production of protein-rich tortilla contains 83.2% wheat flour, 12.6% soy flour and 4.2% whey powder.

The aim of this study was to prepare tortilla from oat flour and optimize the physical quality of the resulting product. Inactivated the lipase and peroxidase enzymes in the oat grains were processed during thermal process operation to prevent lipid rancidity and the oat flour was prepared. At the next stage, tortilla was prepared from oat flour.To improve the texture of tortilla, whey, gluten and mono di glyceride isolates were added to oat flour. The effect of the additives was investigated during tissue stress, fragility resistance and colorimetry tests. According to the results,with increasing gluten level, the fragility resistance of the produced sample was increased.Also, with an increase in the dough baking temperature of 140 to 160 degrees Celsius, the brightness of the produced sample was reduced. Then, the produced samples were compared with two commercial samples of "Pringles" and "Tordilla",which were prepared from maize flour,and chemical compounds, texture meter,amino acid content,colorimetry and organoleptic characteristics were studied. According to the results obtained at 5% level, the Tortilla from oat showed no significant difference in terms of the texture and color quality with the two commercial samples of Pringles and Tordilla as well as had higher essential amino acids, low fat and high quality protein content.Also,the tortilla and two commercial samples of  Pringles and Tordilla were evaluated by the assessors in terms of the indicators of crispiness, color, flavor and taste,which had a significant difference at the level of 5%, so that the highest score was for Pringles, Tortilla and Tordilla, respectively.

Corn tortiilas are flat breads made from corn dough (masa) which is prepared through the nixtamalization process (alkaline cooking). Corn, in nixtamalization, is cooked in a lime solution then the boiled maize is steeped in cooked liquor, following by washing out and milling to obtain wet masa flour. Drying wet masa flour in air oven produce dry masa flour. Cooking temperature, cooking time, lime concentration, and steeping time significantly affect the quality of masa flour and final product(tortilla). In this research the cross effects of these four factors, to determine the best treatment for production of masa flour, were studied. Effects of cooking temperature (75,85,95°C), cooking time (0,30,60 min), lime concentration(0, 0.5, 1%) and steeping time (10,14,18 hr) by measuring pH, protein content, ash content, color parameters, water absorption index (WAI) and using central composite design were investigated. Statistical analysis revealed the best treatment for production of masa flour as: cooking temperature 85°C, cooking time 30 min, lime concentration 0.5%, and steeping time 14 hr.