Fariba Ataei nukabadi; Narges Nehchiri; Javad Keramat; Manuchehr Momeni Shahraki
Abstract
[1]Introduction: Increasing demand for various quality food products with health-related properties has caused many efforts to be made in producing such products. Cereal industry is among major industries with the potential of attracting people’s attention in this regard. However, staling and lack ...
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[1]Introduction: Increasing demand for various quality food products with health-related properties has caused many efforts to be made in producing such products. Cereal industry is among major industries with the potential of attracting people’s attention in this regard. However, staling and lack of fiber and other nutritients in flour is a problem with the products of this industry. Mung bean belongs to Fabaceae family. Mung bean has 7.91% water content, 24.08% protein content, 1.55% fat content, 2.87% ash content, 2.20% fiber content, and 25.73% starch content. In addition, Mung bean has bioactive compounds like tannin, phytic acid, flavonoid, phenolic acid, and other organic acids. This bean is cultivated in Asia, Australia, New Zealand, and Africa. Materials and Methods: In this study, mung bean powder was used in the formulation of sponge cake. The ingredients used in the formula were flour, cake liquid oil, sugar, fresh eggs, dry milk powder, baking powder, whey protein, vanilla and water. Mung bean flour replacied wheat flour by 0, 25, 50, 75, 100% in the sponge cake formula. The traditional sponge cake formula in this study was adopted from the work of Ataei Nukabadi and Hojjatoleslamy (2017). Sugar and oil were mixed for 5 min; the eggs were then added and mixed on the speed 3 setting for 5 min. The sifted powder materials and mung powder were gradually added into the mixer on speed 3 setting for 5 min. For each cake, 58- 60 g of cake batter was poured into a cake pan (50 g) and baked at 250- 280°C for 20 min in preheated oven. The cakes were allowed to cool for 1 hour and then the cooled cakes were packed in poly propylene bags at room temperature before performing physicochemical and sensory evaluation. Chemical evaluation including moisture content, crude protein, ash, crud fat, density, wet gluten, were measured on the sponge cakes according to their standards. Texture profile analysis (TPA) of the cake samples from the midsection of the cakes was carried out using a texture analyzer on the first and thirtieth day of storage and Hardness, cohesiveness, cut, punch and springeness were also measured. Hunter Lab and a*, b*, L*, ∆E was used for color measurements of samples. The hedonic scale is a unique scale providing both reliable and valid results for sensory evaluation. A 5 point hedonic scale was applied to determine the degree of overall acceptance of the sponge cakes. Twenty semi- trained panelists received five samples and were asked to rate the samples based on degree of preference on a five- point hedonic scale (one: extremely dislike, two: dislike, three: neither like nor dislike, four: like, five: extremely like). The panelists received samples from the midsection of the cakes which had been held at room temperature. Each measurement was an average value of 3 replicates. The experimental data were subjected to an analysis of variance (ANOVA) for a completely random design using a statistical analysis system. Duncan's multiple range test was used to determine the differences among means at significance level of 0.05.Result and Discussion: The results showed that hardness, punch, density, ash and protein increased as the level of mung bean powder increased, whereas springiness, moisture content, fat and gluten decreased. There was no significant difference between the samples in measuring the cohesiveness in the first and thirtieth day. Color measurements showed that crumb a* increased and b*, L*reverse trend was observed. The value of ∆E shown sponge cake contained 25% mung had the least difference with the control sample. In sensory evaluation, 25% sample was selected as an acceptable cake formula by the panelists, based on texture, taste, odor and color. The results shown, it is possible to produce sponge cake with different percentages of replacing wheat flour by mung bean powder. Increasing mung powder up to 50% does not have any significant effect on texture and organoleptic properties.
Food Technology
Nasim Najafi; Hajar Abbasi
Abstract
Introduction highly sensitive to fungal and biochemical changes such as respiration and enzymatic activity, as a result, it has a short shelf life: wheat is an important cereal crop used as staple food in many parts of the world and provides 20% of the energy and 78-93% of the protein in the human diet. ...
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Introduction highly sensitive to fungal and biochemical changes such as respiration and enzymatic activity, as a result, it has a short shelf life: wheat is an important cereal crop used as staple food in many parts of the world and provides 20% of the energy and 78-93% of the protein in the human diet. Seed germination is a process which begins with activating proteinase due to uptake of water. Metabolic activity occurs during the germination process, leading to the hydrolysis of proteins and carbohydrates, and the synthesis of metabolites that have health-promoting properties for human. Sprouted wheat is a rich source of protein, dietary fiber, minerals, vitamins and phytosterols. Using chemical preservatives to extend the shelf life of food has a great health concern for many years. Therefore, developing safe methods to control perishability and maintain quality of perishable foods during storage is crucial. Chitosan is a linear polysaccharide composed of randomly distributed β-(1-4)-D-glucosamine and N-acetyl-D-glucosamine. Chitosan coating is beneficial to maintaining the storage quality and prolonging the shelf life of postharvest fruits and vegetables. Dracocephalum kotschyi is one of the medicinal herbs with special constituents including caryophyllene, limonene, α-pinene, geranial, and flavonoids. The essential oil of this plant has significant biological activities, including antiviral, antibacterial and anti-corruption. Considering the successful application of chitosan and essential oils in edible coating formulae and its proven antifungal properties due to its nano-particles prompted us to initiate this study aiming at assessing the efficiency of an edible coating for maintaining quality and increasing the shelf life of wheat sprout. Therefore, in the present study, nano-emulsion of Dracocephalum Kotschyi essential oil in chitosan was considered for coating sprouted wheat in order to delay its perishability. Materials and Methods: Materials used in this study consisted of wheat (Pakanbazr Co.), chitosan (Shayan Chemical Co.) and Dracocephalum kotschyi were supplied from Isfahan's medicinal plants market. All chemicals were from Merck Co. In order to prepare wheat germ, wheat grains were immersed in water containing 0.07 % sodium hypochlorite for 10 min. Then, the disinfected samples were soaked in water at 25 °C for 12 h. After soaking, the samples were placed in a germination chamber at 30 °C and 98% relative humidity for 48 h. Quality properties of sprouted wheat such as moisture, ash, fat, protein, mineral, fiber and ascorbic acid concentration were measured. Sprouted wheat was coated by immersion in nano-emulsion and then was packed at modified atmosphere (30% oxygen, 70% nitrogen), for 12 days at 4° C. The pH, weight loss, total phenol content, antioxidant activity and hardness of the samples were determined. Optimal and control samples were examined in terms of qualitative characteristics such as pH, weight loss, total phenol content, antioxidant activity and hardness during 0, 4, 8, 12, 16 and 20 days after production. In the present study, effects of independent variables such as essential oil concentration (A), chitosan concentration (B) and immersion time (C) on total phenolic content, antioxidant activity, ascorbic acid content, and hardness were investigated by Response Surface Method in the form of a central composite design with 6 central point (α=1.5). Comparison of the optimal and control samples was done in a completely randomized design using SAS ver: 9.1 software. Results and Discussion: An increase in chitosan and immersion time resulted in better preservation of total phenolic. The interaction effect of essential oil concentration and immersion time also resulted in better retention of total phenolic compounds. An increase in essential oil and chitosan concentration up to intermediate level increased the antioxidant activity. Chitosan and Dracocephalum Kotschyi essential oil play a key role in maintaining the total phenolic content and antioxidant capacity of sprouted wheat by reducing gas exchange, respiration rate and the activity of polyphenol oxidase and peroxidase enzymes. Interaction effects of variables up to intermediate level resulted in higher level of preservation of ascorbic acid. The interaction effect of essential oil and chitosan at high levels led to better preserved of hardness. Coating treatment contains 25% chitosan with 84.18 ppm Dracocephalum Kotschyi essential oil and 25s immersion time can be introduced as a safe and effective method to maintain the quality characteristics and increase wheat sprout shelf life. Coating of wheat sprout reduced the changes in pH, weight loss, total phenol content, ascorbic acid, antioxidant activity and hardness in coated samples during storage compared to the control sample. Furthermore, sensory properties did not change significantly after storage time. The results revealed that the use of chitosan- Dracocephalum Kotschyi oil coating delay bacterial and fungal decay and improved the quality characteristics and shelf life of sprouted wheat during storage. The results of this study indicated the positive effect of chitosan-Dracocephalum Kotschyi oil nano-emulsion coating on preserving the quality of sprouted wheat
Mohammad Javad Golieh; Mohammad Goli
Abstract
Introduction: Recently, the prevalence of diseases related to diabetes, hypertension, and obesity, due to high and persistent consumption of sucrose is increasing rapidly. Concerns about the adverse effects of sugar consumptionon one hand, and manufacturers and consumers attention for natural sweeteners ...
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Introduction: Recently, the prevalence of diseases related to diabetes, hypertension, and obesity, due to high and persistent consumption of sucrose is increasing rapidly. Concerns about the adverse effects of sugar consumptionon one hand, and manufacturers and consumers attention for natural sweeteners to replace sugar, on the other hand, reveal that innovative approaches are needed to help develop a healthy diet which prevents such diseases. Stevia can be introduced as a good replacement for sucrose. Corchorus olitorius L. is a rich source of bioactive compounds such as protein, fiber, vitamins, minerals, sterols, tocopherols, and carotenoids, which has significant antioxidant, antibacterial, antifungal, antiviral, anti-inflammatory and anti-cancer properties. This study aimed to reduce the sugar level in Luz preparation and produced a high nutritive product by using Corchorus olitorius. Materials and methods: Materials used in Luz formulation consisted of isomalt, sorbitol, coconut powder, pistachio powder, cardamom, cinnamon and chlorophyll, stevia, and Corchorus olitorius were supplied from Salamat-gostaran arayan Co. All chemicals were from Merck Co. The formulations of Luz include sorbitol (29.68%), sugar (25.85%), coconut powder (38.75%), cardamom (0.3%), cinnamon (0.26%) and chlorophyll (58.5%). 2) were selected, and isomalt was used as filler. To produce Luz, the mixture of sorbitol and isomalt was heated to reach boiling temperature and complete dissolution. After the heat treatment (126°C for 1h), the mixture was cooled to 40°C and the other materials were added and mixed. The prepared samples were molded and placed at 15°C for 3 h. Moisture, ash, protein, fat, and sugar were determined according to AACC standard numbers. The density was also determined according to AACC standard number 54-21. Textural properties were determined using a texture analyzer. Atomic Spectroscopic measurement of minerals was performed according to Devatkal et al. (2004). The color evaluation was performed by the Image Processing method. In this study, the effects of Stevia replacement with sugar (0-100%), Corchorus olitorius replacement with pistachio powder (0-100%) and cooking temperature (50-70°C) on physical and textural properties (density, hardness) of Luz were investigated. Formulation optimization of enriched dietary Luz was performed using Response Surface Method in the form of a central composite design with 6 central points and two replications (α=2) in other locations. In optimum condition, the results of physicochemical, textural and color properties were analyzed by SPSS software. Results and discussion: The linear model was suggested for density changes, and independent effect of variables (stevia replacement, Corchorus olitorius replacement, cooking temperature), interaction effect of Stevia and Corchorus olitorius replacement, interaction effect of Corchorus olitorius replacement and cooking temperature, the quadratic effect of Stevia replacement and the quadratic effect of cooking temperature were significant on density (P <0.05 or P <0.001). The density of all treatments increased with increasing the levels of Stevia and Corchorus olitorius replacement. An increase in density was observed with increasing cooking temperature. The interaction effect of Corchorus olitorius and cooking temperature caused a significant (P<0.05), decrease in hardness. A reduction in the level of stevia replacement resulted in a decrease in hardness. The optimum formulation of dietary Luz was introduced containing 25% Stevia, 25% Corchorus olitorius and cooking temperature of 65°C, and 55% Stevia, 75% Corchorus Olitorius and cooking temperature of 55°C. Overall, the nutritional value of dietary Luz containing Corchorus olitorius was improved in terms of protein, ash, magnesium and calcium content. The total sugar content of the optimum samples was significantly lower than the control. The textural characteristics of the optimum samples had not changed significantly.
Messiah Sarfarazi; Mohebbat Mohebbi; Mahdi Saadatmand-Tarzjan; Ali Mirshahi
Abstract
Introduction: Chocolate is a suspension of solid particles, including sugar, cocoa solids and milk powder (depending on the chocolate type) in a continuous fat phase, namely cocoa butter or its substitutes. The solid particles account for approximately 70% of chocolate with the fat constituting about ...
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Introduction: Chocolate is a suspension of solid particles, including sugar, cocoa solids and milk powder (depending on the chocolate type) in a continuous fat phase, namely cocoa butter or its substitutes. The solid particles account for approximately 70% of chocolate with the fat constituting about 30%. Sugar takes up nearly 40–50% of the total solid particles of chocolate, thus influencing its sweetness, particle size distribution, rheological and sensory properties. It is also considered to be a bulking agent and a source of energy which produces 394 kcal/100 g of refined sugar. Therefore, consumers are increasingly becoming concerned with chocolate sugar and calorie content nowadays. This issue can be resolved by replacing sugar with bulk (nutritive) sweeteners and/or dietary fibers. Bubbles are found in many food products, including cakes, chocolates and beverages. Although they do not increase the food nutritional value, they change its textural properties and mouthfeel. Bubbles are normally visible to the naked eye and their mean diameter ranges from 0.05 to 3 mm. X-ray computed tomography is a 3D imaging technique which captures the images of a sample cross-sections. It is used for the non-destructive visualization and characterization of food microstructure. In this method, a series of radiographs of a sample are captured from different angles to be utilized for the 3D reconstruction of the material microstructure. Materials and methods: sugar was replaced with inulin: maltodextrin mixture at ratios of 25:75 (CH2), 50:50 (CH3) and 75:25 (CH4). Carbon dioxide was injected into the samples at 6 bar to produce aerated chocolate. Using X-ray computed tomography, the images of the samples were captured and after processing, the obtained images were segmented using the Chan-Vese method. The properties of bubbles included total volume, diameter and surface to volume ratio. The crystallinity of the samples was determined through X-ray diffraction. The hardness of the chocolate bars was measured using the puncture test. The density of the aerated chocolates was also compared with that of the nonaerated ones. Introduction: Chocolate is a suspension of solid particles, including sugar, cocoa solids and milk powder (depending on the chocolate type) in a continuous fat phase, namely cocoa butter or its substitutes. The solid particles account for approximately 70% of chocolate with the fat constituting about 30%. Sugar takes up nearly 40–50% of the total solid particles of chocolate, thus influencing its sweetness, particle size distribution, rheological and sensory properties. It is also considered to be a bulking agent and a source of energy which produces 394 kcal/100 g of refined sugar. Therefore, consumers are increasingly becoming concerned with chocolate sugar and calorie content nowadays. This issue can be resolved by replacing sugar with bulk (nutritive) sweeteners and/or dietary fibers. Bubbles are found in many food products, including cakes, chocolates and beverages. Although they do not increase the food nutritional value, they change its textural properties and mouthfeel. Bubbles are normally visible to the naked eye and their mean diameter ranges from 0.05 to 3 mm. X-ray computed tomography is a 3D imaging technique which captures the images of a sample cross-sections. It is used for the non-destructive visualization and characterization of food microstructure. In this method, a series of radiographs of a sample are captured from different angles to be utilized for the 3D reconstruction of the material microstructure. Materials and methods: sugar was replaced with inulin: maltodextrin mixture at ratios of 25:75 (CH2), 50:50 (CH3) and 75:25 (CH4). Carbon dioxide was injected into the samples at 6 bar to produce aerated chocolate. Using X-ray computed tomography, the images of the samples were captured and after processing, the obtained images were segmented using the Chan-Vese method. The properties of bubbles included total volume, diameter and surface to volume ratio. The crystallinity of the samples was determined through X-ray diffraction. The hardness of the chocolate bars was measured using the puncture test. The density of the aerated chocolates was also compared with that of the nonaerated ones. Results and discussion: X-ray diffraction revealed that there were many strong peaks in the diffractogram of CH1, which can be ascribed to the high degree of sugar crystallinity in addition to the impurities present in the commercial sugar utilized in this study. In the case of the sugar-free samples, namely CH2, CH3 and CH4, two distinct peaks could be seen at 2θ of about 21° and 23.5°, both of which were much stronger and more defined in the scattering pattern of CH3, demonstrating the more crystalline structure of this sample. It seems that inulin and maltodextrin have physically interacted with each other or with the other ingredients of the chocolate, in particular CBS, which has been more pronounced at the ratio of 50:50. The results of image segmentation showed that the Chan-Vese method, compared with the adaptive thresholding one, was more able to segment the images, because this method does not depend on the image gradient and is especially suitable for the objects with vague edges. The mean bubble diameter of CH1 was bigger than that of the other samples, which could be due to its higher degree of crystallinity, because the crystalline structure of CH1 prevented the gas from being lost leading to the coalescence of smaller bubbles and the formation of bigger ones. In addition, it was observed that the density of the aerated chocolate was higher than that of the unaerated one in all the formulas as a portion of solid particles and fat was replaced with the gas. The results also demonstrated that the sugar-free aerated samples were softer than the corresponding nonaerated ones. However, it was reversed in the case of CH1 which could be ascribed to the presence of sugar in this sample, because in aerated products, solid particles, particularly sugar, form a continuous skeleton and play the same role as fat does in nonaerated products.
Amir Gitiban; Narmela Asefi
Abstract
Introduction: Dried fruits are one of the most important non-oil exports and the efforts should be made to grow the economy of the country by increasing their exports to world markets. Meanwhile, quince juice contains various minerals including iron, phosphorus, calcium, potassium and rich in vitamins ...
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Introduction: Dried fruits are one of the most important non-oil exports and the efforts should be made to grow the economy of the country by increasing their exports to world markets. Meanwhile, quince juice contains various minerals including iron, phosphorus, calcium, potassium and rich in vitamins such as vitamins A, C and B vitamins. Drying of food is one of the ways to keep its quality and increase its shelflife. During this process, the removal of moisture through the simultaneous transfer of heat and mass occurs. By transferring heat from the environment to the foodstuff, the heat energy evaporates the surface moisture. The drying process has a great impact on the product. In recent years, new and innovative techniques have been considered that increase the drying rate and maintain the quality of the product and infrared drying is one of these novel techniques.. Infrared systems are emitting electromagnetic waves with a wavelength of 700 nm to 1 mm. The advantage of using infrared is to minimize waste and prevent product quality loss due to reduced drying time can be mentioned. The need to predict product quality in each process makes it necesary to model and discover the relationship between factors that can affect the final quality of the product. Artificial neural networks have been considered as a meta-innovative algorithm for modeling and prediction, which can be favored by the ability of these networks to model and predict processes The complexity and discovery of non-random fluctuations in data and the ability to discover the interactions between variables, economical savings in the use and disconnection of classical model abusive constraints (Togrul et al., 2004), the ability to reduce The effect of non-effective variables on the model by setting internal parameters is the ability to predict the desired parameter variations with minimum parameters (Bowers et al., 2000). Materials and methods: In this research, quince fruit (Variety of Isfahan) was purchased as the premium product of Isfahan Gardens and was kept at 0°C in the cold room prior to further experiments. The fruits were removed from the refrigerator one hour before processing and exposed to ambient temperature. After washing, surface moisture was removed by moisture absorbent paper and turned into slices with a constant thickness of 4 mm. The specimens were subjected to pre-treatment with an osmotic solution (vacuum for 70 minutes at a temperature of 40 ° C for 5 hours). For drying the samples, an infrared convective dryer with three voltages (800.400 and 1200 watts) and a constant speed of 0.5 m / s was used. In this way, the samples were placed under infrared lamps on a plate made from a grid and the weight of the samples was measured in a scale of 10 minutes by means of a scale and recorded on the computer. In order to achieve stable conditions in the system, the dryer was switched on 30 minutes before the process. The distance between the samples and the infrared lamp was fixed in all treatments at 16 cm. The drying process continued to reach a moisture content of 0.22 basis. To perform a puncture tests, quince slices were used in a Brookfield-based American LFRA-4500 tissue analysis device. In order to model these parameters in the drying process, the results of examining the quality of the samples, including the firmness of the tissue as well as the drying time, were used as network outputs. The power, concentration and pressure parameters were considered as network inputs. In this research, a multilayer perceptron network (MLP) was used. Due to its simplicity and high precision, this model has a great application in modeling the drying of agricultural products. Many functions in transmitting numbers from the previous layer to the next layer may be used (Tripathy et al., 2008). Result & discussion: The results indicated that the stiffness of the tissue is reduced in vacuum conditions with increased power. So, the least amount of stiffness was related to osmotic sample dried at 1200 watts. By increasing the infrared power, the stiffness of the tissue decreases, the reason for this is probably the volume increase phenomenon that occurs during the rapid evaporation of moisture through infrared rays from inside the tissue. The results showed that at the start of the drying process, due to the high moisture content of the product, the moisture loss rate is high. Gradually, with the advent of time and reduced initial moisture content, the rate of moisture reduction naturally decreases. At lower power, the drying time is longer and with increasing power, the drying time decreases due to the increase of the thermal gradient inside the product and consequently the increase in the rate of evaporation of the moisture content of the product. The results of this study showed that the neural artificial network, as a powerful tool, can estimate the stiffness parameters of the tissue and the drying time with high precision. The most suitable neural network structure to predict these parameters with a 3-7-2 topology along with logarithmic activation functions with a total explanation coefficient above 0.9923 represent the best results. Also, by increasing the drying capacity and using osmotic dehydration, the drying time and the stiffness of the tissue samples is decreased.
Azam Ayoubi; Mahda Porabolghasem
Abstract
Introduction: Increased intake of calorie and decreasing physical activity might increase the risks for cancer, obesity, cardiovascular diseases, diabetes mellitus and hypertension. Using natural sweeteners instead of sugar in food formulations can be a good method to reduce the calorie intake. World ...
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Introduction: Increased intake of calorie and decreasing physical activity might increase the risks for cancer, obesity, cardiovascular diseases, diabetes mellitus and hypertension. Using natural sweeteners instead of sugar in food formulations can be a good method to reduce the calorie intake. World Health Organization recommends limiting added sugar intake to <10% of total energy. Many sugar substitutes were used in food products such as glucose syrup, molasses, fructose syrup, invert syrup and malt extract. Utilization of fruits in food preparation while requiring sweet taste is a wise strategy to reduce the added sugar intake. Dates are ideal fruits to substitute added sugar in foods, and they play an important role in daily nutrition of many people in the arid regions. Date fruits are rich in dietary fiber, phenolic compounds, minerals, vitamins, antioxidant and antimutagenic compounds. Date syrup that produces from date is one of the suitable replacements that can be used for substituting sugar. Date syrup is a high energy food rich in carbohydrate, a good source of minerals; but it is also contains a very complex mixture amino and organic acids, polyphenols and carotenoids. Date syrup contains fructose, glucose and small amount of sucrose. Low quality date cultivation occupies about 60% of the total plantation. These dates are poor in size and taste, unsuitable for consumption. The presence of high sugar content in these low quality varieties makes them suitable for producing date syrup. The purpose of this research was study the effects of substituting sugar with date syrup on physicochemical and sensory properties of cupcake.
Materials and methods: Date syrup purchase from Dambaz Company and wheat flour purchase from Tavakkol factory of Kerman. Other materials purchased from local market of Kerman. In this research four different level of date syrup (25, 50, 75 and 100%) were used in cake formulations as a sugar substitution and the effects of dates syrup on the physicochemical (including weight loss, pH, porosity, density, moisture, hardness of texture and color of crust and crump) and sensory (texture, crust color, taste and total acceptance) properties of cupcake were studied. The weight loss calculated by measuring difference of weight before and after baking. pH was measured by a digital pH meter. cake moisture content was determined by drying samples at 130±2°C in a hot air oven. The volumes of the cake samples were measured by the seed displacement method and then density was calculated by dividing the volume by the weight. For evaluation of porosity used Image j method. Hardness of the cake samples were measured with Instron testing machine. Color measurements were done using a Hunterlab Colorimeter. Analysis of variance (ANOVA) was conducted for data using MSTAT-C software. Differences among the mean values were also determined using Duncan’s Multiple Range test. A significant level was defined as a probability of 0.05.
Results & Discussion: Data analysis showed that the date syrup, significantly affected the physiochemical and sensory properties of the cake. It was discovered that by increasing the percentage of date syrup in cake formulation, weight loss decreased and moisture increased. Sugars make hydrogen bonds with water molecules due to their hydroxyl groups, because of the molecular structure of the sugars like sucrose, fructose and glucose, it seems that increasing functional groups in date syrup sugars compared with sucrose, resulted in the formation of more hydrogen bonds, which caused the reduction in the mobility of free water and therefore make an increase in moisture of cake. According to the results, pH and porosity of the cake decreased as the date syrup level increased. The results showed that increasing date syrup level caused an increase in density. By decreasing the volume of cake density increased. The volume probability decreased because of affecting reduced sugars and changing viscosity and density of the cake batter. Based on the results, hardness increased significantly with increasing replacement of sugar with date syrup. The possible reason for this result was due to decreasing volume and porosity of cake with increasing date syrup content. The color of the cake is due to the Maillard and caramelization reactions during baking. A key element in Maillard reaction is reducing sugar which is abundant in date syrup and able to enhance the brown color. The results showed that the crust and crump lightness (L) decreased significantly with increasing the levels of date syrup. The crust and crump yellowness (b) were significantly less than control. With reducing sucrose level, the redness of the crust and crump increased significantly. According to sensory evaluation results, scores of crust color, texture and total acceptance of the cake remained unchanged when up To 50% date syrup was used. However, further addition of date syrup significantly reduced these scores. The results showed that the cake formulation with 100% date syrup date obtained the lowest score by panelists in terms of taste. Least value of weight loss (19/2%), porosity (19/5%) and most value of density (0/5 g/cm3), darkness of crust (32/47) and crump of cake (35/64) were related to substitution level of 100%. Present study demonstrated that the date syrup could replace up to 50% of the sugar without affecting the quality of cupcakes.
