Fatemh Eivani; Behzad Nasehi; Mohammad Noshad; Hassan Barzegar
Abstract
Introduction: Increasing the demand for purchase and use of high quality products with good health benefits has led to a lot of efforts to increase and maintain the quality of different products. Sponge cake is one of the cereal products that the stale and lack of dietary fiber in cake flour is one of ...
Read More
Introduction: Increasing the demand for purchase and use of high quality products with good health benefits has led to a lot of efforts to increase and maintain the quality of different products. Sponge cake is one of the cereal products that the stale and lack of dietary fiber in cake flour is one of the major problems in this product. Cake is one of the flour mills and is intermediate in terms of calorie content of bread and biscuits. This high-consumption product has many fans among children and adolescents. Given the fact that this group of people is in the age of growth and healthy and nutritious nutrition will play a significant role in their health, the enrichment of all kinds of cakes is among the most important issues. Since the predominant promise is low-value and even unattractive and with high calories, it only causes obesity and cardiovascular disease. Recently, the use of fruit and vegetable waste has become widespread to reduce environmental pollution. Considering that these lesions are important sources of polyphenols. Industrial and agricultural residues are sources of natural antioxidants and food fibers. The functional properties of some skin components, such as pectin, flavonoids, carotenoids, lemonies, and poly-methoxyflavones, should be taken into account. Nowadays, cake producers have a major problem with lipid oxidation, which limits the shelf life of their products. Bakery products such as cakes, especially those with high fat content, tend to become corrosive after prolonged storage due to unsaturated fatty acids. Special attention has been paid to the use of natural antioxidants to minimize the use of synthetic additives. In recent years, the growing trend of bakeries with nutritional value such as rich fiber has been observed. In order to increase fiber content in cake and muffins, several raw materials such as bran, outer layers of grains have been used. Materials and methods: Pomegranate was purchased freshly from the market, then the seeds were separated, then the samples were dewatered and the cores were dried at 30 ° C for 2 days. The pomegranate cores were dried after milling and after passing the sieve with the mesh 35 was used. The dough was prepared and the pomegranate and xanthan gum flour was added to the dough. The prepared dough was poured into the mold, then the molds were bake for 30 minutes in an oven at 175 ° C. Cakes were then stored after leaving the oven and cooled in polyethylene packages at room temperature until further tests were performed. An image processing method was used to check the porosity and color of the crust and crumb of enriched cakes. For this purpose, the imaging was carried out in a special box with a uniform white light at all directions and from a fixed distance with the Canon Power Shot P500 Canon Camera. Pictures are saved in JPG format. To get the same levels from each image, Adobe Photoshop CS4 (Photoshop CS6) was designed with 457 x 504 pixels for the brain and skin. To colorize the samples, the RGB color space was converted by Image J software to * L,*a, and *b. In this research, the effect of replacing wheat flour with pomegranate powder (0-50%) and xanthan gum (0 to 0.3%) on the physico-chemical (Moisture, pH, ash, porosity, volume index, fiber and protein), qualitative (Density, stiffness, weight loss, symmetry, volume, color and durability) and sensory properties of cake were evaluated using the response surface method in the form of a composite design. Results and discussion: The results of this study showed that increasing the replacement of pomegranate powder has a positive and significant effect on fiber content, protein and weight loss and negative effect on density properties, texture stiffness, symmetry, volume index, color indices, the overall acceptance and flavor of the samples. Also, increase in the percentage of xanthan gum has a positive and significant effect on density, texture stiffness, volume, porosity, and volume index and weight loss of samples. In general, the evaluation of all characteristics showed that the cake sample containing 0.1% gum and 22.22% pomegranate powder had the best quality. On the other hand, comparing the optimal sample and the control indicates that the replacement of pomegranate powder has increased the phenolic compounds and reduced peroxide value.
Mahboubeh Darapoor; Behzad Nasehi; Hassan Barzegar; Hossein Jooyandeh
Abstract
Introduction: By-products have traditionally been used as animal feed and are considered agricultural waste. However, they are rich in fiber and bioactive compounds, and efforts have been made to utilize them as functional ingredients and for the enrichment of food products. On the other hand, the intake ...
Read More
Introduction: By-products have traditionally been used as animal feed and are considered agricultural waste. However, they are rich in fiber and bioactive compounds, and efforts have been made to utilize them as functional ingredients and for the enrichment of food products. On the other hand, the intake of a sufficient amount of dietary fiber can regulate the flow of intestines, prevent and treat diabetes, cardiovascular and intestinal cancers. In this regard, in recent decades, there has been a tendency to seek new sources of dietary fiber and natural antioxidants, such as agricultural byproduct that were considered. In this regard, sugar cane bagasse, which has chemical compounds such as cellulose, hemicellulose, lignin, as well as phenolic compounds, waxes and minerals. Currently, bagasse used to production Cement (Tian et al., 2016), sand and grains (Sales et al., 2010), Chipboard (Garzon-Barrero et al., 2016), enzymes (Bocchini et al., 2005), single proteins (Rodriguez et al., 1992), vanillin (Mathew & Abraham, 2005), succinic acids (Chen et al., 2016), citric acid (Zhoghi et al., 2013), lactic acid (Laopaiboon et al., 2010). Donut is the only wheat industrial product that has a lot of attractive sensory features in spite of its high fat content. Therefore, one of the goals of the researchers in recent years has been finding solutions to improve its quality by reducing the absorption of oil or increasing the health components such as fiber. Therefore, this study was conducted to investigate the possibility of production of functional donuts that enriched with bagasse. Materials and methods: In this study, in order to optimize the formulation of donuts with two varieties of sugarcane bagasse fiber (0-25%), soybean soluble polysaccharide (0-2%) and frying time (2-5 minutes) on the physicochemical characteristics of donuts and sensory properties by using mini-tab software (version 16) and central composite rotatable design (CCRD) was investigated. The mean comparison was performed using Fisher test at 95% probability level. Bagasse were treated according to the method of Gao et al. (2013). Donuts were prepared according to the formulation by Nouri et al., 2017. Ingredients used in control donut formulation were consisted of 100 g of wheat flour (9 g/100g proteins, (Arde jonob Co., Khuzestan, Iran), 38 g of water, 9g of Shortening (Behshahr Industrial Co., Tehran, Iran), 13g of Egg, 13g of water for yeast, 6.3g of sugar, 6.3g of nonfat dried milk powder (Pegah Co., khozestan, Iran), 3g of active dried yeast (Nabmayeh, Khozestan, Iran), 1.6g of Vanilla extract (AbyazChimieEssence and Colour Co., Tehran, Iran), 1.6g of baking powder (Soheil Powder, Tehran, Iran), and 1.6g of Salt. The volume of the donuts was determined using the rapeseed displacement AACC method 10-05 (AACC, 2000). Moisture content of donuts crumb was measured using a Heraeus oven (model UT 5042, Germany) at 105 ºC for 3.5 h (Kim et al., 2015). The fat content of dried donuts was determined by Soxhlet extraction with petroleum ether for 5 h (Melito & Farkas, 2012). Firmness and springiness were measured in triplicate using a TA.XT2i Texture Analyzer (Stable Micro Systems, Goldalming, UK). The donuts were evaluated for over all acceptance of based on a five-point hedonic scale. The scale of values ranged from “dislike extremely” (score 1) to “like extremely” (score 5). And lightness was evaluated with Konica Minolta colorimeter. Results and discussion: The results showed that most of the proposed models in this study were proportional and meaningful from R2 and R2 (Adj). Also, the lack of fit these model were meaningless and their coefficient of variation was also appropriate. So, bagasse fiber increased moisture, hardness, cohesiveness and gumminess, fat, crust and crumb a, fiber and decreased specific volume, crust L. Increasing frying time increases hardness, cohesiveness, gumminess, and decreases crust L and moisture. Soybean soluble polysaccharide had no significant effect on these cases. According to the panelists, donuts containing bagasse fiber were harder and less chewable and had a darker color than the control sample. Response surface methodology described that donuts with optimum formulation of 9.09% bagasse fiber and 0.78% soybean soluble polysaccharide and the frying time of 2 minutes and 36 seconds would be the most desirable sample that has acceptable consumer characteristics. Investigating the optimal sample composition showed that iron and zinc mineral elements, fiber, fat, and total acceptance were higher than the control sample. However, no significant difference was observed in the control and optimum sample protein content. Also, with increasing durability, the moisture content of the product decreases. On the other hand, the specific volume of the control sample during the days of storage did not have a significant difference at 5% level. While the optimum sample volume in the days of shelf life has decreased. There was no significant difference between the control and optimum sample peroxidase in the first and third days, while on the fifth day, both were significantly decreased. The examination of texture characteristics suggests that the donut crumb of controlled and optimized was harder during the storage period, while the optimum sample was softer than the control sample.
Sorour Lotfi Shirazi; Arash Koocheki; Elnaz Milani; Mohebbat Mohebbi
Abstract
Introduction: Snack foods have become an important part of the people’s diets. During last decade demands for utilization of fruit and vegetable waste in order to their dietary fibers in value added food products has been increased. Carrot pomace is rich in dietary fiber that contains important functional ...
Read More
Introduction: Snack foods have become an important part of the people’s diets. During last decade demands for utilization of fruit and vegetable waste in order to their dietary fibers in value added food products has been increased. Carrot pomace is rich in dietary fiber that contains important functional and nutritional properties. Barley contains a high amount of dietary fiber, especially soluble fiber, which has essential role in reducing blood cholesterol level.
Materials and methods: In this project based on Central Composite Design, the effect of independent variables containing extrusion temperature (120-170 °C), moisture content (14-20%) and carrot pomace level (10-25%) were evaluated on expansion ratio, bulk density, WAI, WSI, hardness, color snacks were evaluated by panelists in terms of acceptance or non-acceptance.
Results and discussion: Results expressed that expansion ratio, lightness, total acceptability and WAI decreased by increasing the amount of carrot pomace. Reduction of expansion ratio and WSI and improvement of lightness and WAI were shown as increased in moisture levels. The hardness and bulk density decreased with an increase in temperature. When temperature increased up to 145°C, expansion ratio, lightness, WAI and WSI increased and decreased thereafter. The optimum conditions for barley flour-carrot pomace snack were determined at the maximum expansion ratio, L*, WAI and overall acceptability with minimum bulk density and hardness in a snack. The optimum condition provides the highest value of expansion ratio 296.1 (%), L* 65.087, WAI 4.931 (g/g) and overall acceptability 4.502 with lowest bulk density 1.22 (g/cm3) and hardness 6.756 (N). Accordingly, the optimum conditions for the snack are 10% carrot pomace, 148°C die temperature and 15.49% moisture. The approximate composition of the snack extruded and unextruded obtained under the optimal conditions. Extrusion did not affect the protein and ash contents but it decreased the fat content of snack. During the extrusion, the SDF increased from 7.63 to 9.27 g/100g while the IDF decreased from 5.24 to 3.71 g/100g. Extrusion cooking did not affect the TBG content in barley flour-carrot pomace snack. Extrusion cooking resulted in the conversion of insoluble to soluble fiber and well balance of both types of the fiber
Sakineh Heydari; Bahareh Shabanpour; Parastoo Pourashouri
Abstract
Introduction: One of the most important factors in the production of bread products is the frying process. Deep frying by moving a water mass separated from the product to the outside can cause deformation and fracture of the crust of bread products, therefore, This study aimed to evaluate the effect ...
Read More
Introduction: One of the most important factors in the production of bread products is the frying process. Deep frying by moving a water mass separated from the product to the outside can cause deformation and fracture of the crust of bread products, therefore, This study aimed to evaluate the effect of adding edible wheat and oat dietary fibers and prevent deformation quality of shrimp analogue products, as a value-added product produced from surimi.
Materials and Methods: The shrimps analogue were produced of Hypophthalmichthys molitrix fish surimi by using a composite-molded method with preparation filament of surimi in five treatments including a fiber-free treatment and four others have 5 and 6 percent oats and wheat fiber; coating, pre-fried and were frozen. In order to perform experiments, the shrimp’s analogue were thawed and fried.
Results and Discussion: The results showed that the highest amount of moisture and the lowest amount of fat were in treatments containing 6% 49.06 and 5.51 wheat fiber respectively and 49.56 and 6.47 oat fiber respectively (p
Mehran Nouri; Behzad Nasehi; Vahid Samavati; Saman Abdanan
Abstract
Introduction: Increased awareness of diet-health association has led to the growth of health food industry. Deep-fat fried foods such as donuts enjoy wide popularity owing to their taste, distinctive flavor, aroma and crunchy texture. There is, however, a great health concern over large fat content of ...
Read More
Introduction: Increased awareness of diet-health association has led to the growth of health food industry. Deep-fat fried foods such as donuts enjoy wide popularity owing to their taste, distinctive flavor, aroma and crunchy texture. There is, however, a great health concern over large fat content of fried foods. Incorporating the dietary fiber such as hydrocolloids into the food substrate in the batter formulation is one of the most effective strategies to decrease fat uptake in fried foods. Dietary fibers act as water binders in a coating or batter formulation through which reduce fat uptake of fried foods. That is, an increase of water content of food could lead to a decrease of oil penetration during the frying process. Persian gum (PG), as a novel gum, is exudates of the wild or mountain almond trees (the main source is Amygdalus scoparia Spach). Carrot pomace is a fibre-rich by-product of carrot juice industries which contains approximately 80% of carrot carotenes. Carrot juice yield is reported to be only 60-70% and the remaining pomace is usually disposed of as feed or fertilizer. There is an increasing interest in microwaving foods for several reasons: it is faster than conventional methods, the energy consumption is often lower and foods cooked by microwaving maintain nutritional integrity. Therefore, the aim of this study was to examine the effect of microwave pre-treatment on physico-chemical properties of donut containing Persian gum and carrot pomace powder sources of dietary fiber.
Materials and methods: Donuts were prepared according to the formulation reported by Melito and Farkas (2012). Ingredients used in control donut formulation were consisted of 100 g of wheat flour (9 g/100g), 38 g of water, 9g of Shortening, 13g of Egg, 13g of water for yeast, 6.3g of sugar, 6.3g of nonfat dried milk powder, 3g of active dried yeast, 1.6g of Vanilla extract, 1.6g of baking powder, and 1.6g of Salt. For the making of donuts, the flour blends were prepared by replacing wheat flour with 1.2 g/100g PG and 645 g/100g CPP. As well, water was added at 48.16 g/100g based on flour weight. The exudate gums of mountain almond trees were collected in Lorestan province. In order to eliminate foreign matters such as dust and dirt, the PG was washed three times with its threefold weight of ethanol (96% w/v) for 15 min under constant stirring. After removing ethanol by drying in an oven (at 60º C for 6 h) the PG was ground using a coffee grinder (model 320, Spain), sieved (180 µm) and packaged in polyethylene packs and then stored in 4ºC. Fresh carrots were purchased from a local market. Carrots were washed and then pressed with a juice extractor and the resultant pomace was collected. The carrot pomace was blanched in water (80 ± 2°C for 3 min) and then cooled in cold water (4º C). The pomace water was drained with cheese-cloth prior to drying. Finally, the carrot pomace was dried in an oven (60º C for 12 h). The dried pomace was ground using a coffee grinder to fine powder. The carrot pomace powder was sieved (180 µm) and packed in polyethylene packs and then stored in 4ºC. Specific volume of donuts was determined using the rapeseed displacement AACC method. Moisture content of donuts crumb was measured using a oven at 105 ºC for 3. The fat content of dried donuts was determined by Soxhlet extraction with petroleum ether for 5 h. Firmness and springiness were measured in triplicate using a TA.XT2i Texture Analyzer equipped with a 5 kg load cell and a P/35 mm aluminum cylindrical probe. Crumb grain (total number of cells and porosity) and crumb color of donuts were evaluated using an image analysis system consisted of a digital camera, a personal computer and MATLAB R2014a software. The control and optimized donuts were evaluated for acceptance of their appearance, crust color, crumb color, aroma, texture, taste and overall acceptance based on a nine-point hedonic scale. Response Surface Methodology (RSM) and Box-Behnken design with 3 factors were applied to obtain optimal levels of independent variables including microwave power (300-900 W), microwave time (30-90 s) and frying time (70-130 s).
Results and discussion: The results indicatedthat moisture content significantly (p
