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J Sadeghizadeh Yazdi , M Mazaheri Tehrani , M.b Habibi, S.m.a Razavi,
Volume 15, Issue 5 (1-2017)
Abstract

Abstract

Introduction: oil in water emulsions has attracted considerable food industry due to their physical characteristics. But there is a considerable amount of cholesterol in some of them, such as cream and it was a risk factor for cardiovascular disease and are created compounds in the effect of cholesterol oxidation during processing or food storage compounds that are known as carcinogenic agents, cytotoxic, mutagenic and atherogenic. The purpose of this study is the production of cream mixed with cholesterol and lower prices and greater nutritional value than dairy cream.

Methods: Three different formulations of the mixture cream (A, B, C), soy milk, cow's milk, water soluble emulsifier, xanthan, calcium chloride, light cream milk, sunflower oil and emulsifier Sytrum was taken in proportions appropriate. The Pearson correlation was used to assess the relationship between amounts of fat, protein with water. Sensory evaluation of the cream mixture samples was conducted by using a 9-point Hedonic scale. They were used rank Kruskal-Wallis test Due to the response variables. They were used the specific test of multiple comparisons DAN for compare the two groups. They were also used descriptive statistics as mean and standard deviation and were performed data analysis by using R 2.3 software.

Results: the Pearson correlation coefficient between fat and.16 volume (increase volume) is equal to 45% and p-value <0.03 and between volume and water is equal to - 87% and p-value = 0.0001 obtained by using software minitab.16. Most flavors, colors, cream, and a general acceptance, respectively obtained for the formulation of C A> B (p <0.05).

Conclusion: The results of this study showed that the use of soy milk made ​​from soy flour, although somewhat affecting flavor and creamy mixed water but while increasing the nutritional properties can be formulated with other ingredients to create the perfect texture.


Neda Mollakhalili Meybodi, Mohammad Amin Mohammadifar,
Volume 15, Issue 6 (3-2017)
Abstract

Background and objective: irradiation is a physical treatment in which products are exposed to ionized radiation such as gamma and x rays to improve the security and quality. Hydrocolloids are components that are used in food science to improve texture properties. Exposing to irradiation treatment may change structural and functional properties. By regard to the importance of irradiation on decontaminating of hydrocolloids in food application, the aim of this study is studying the effect of irradiation at different doses on functional properties of Gum Tragacanth in food application. Material and methods: effect of irradiation treatment was studied on the rheological properties, zeta potential, particle size distribution and surface tension of dispersion systems contained 0/5% w/ w gum tragacanth that is irradiated at different doses (0, 0.75. 3, 5 kGy). The effect of irradiation on rheological properties was monitored by rheometer. In order to monitor the effect of irradiation treatment on particle size distribution, zeta potential and surface tension, particle sizer, Brookhaven zeta plus and tensiometer sere used respectively. All treatments were performed three times and the data were analyzed by one way ANOVA. Significant differences between means were identified (P values < 0.05) using Duncan test. Results: Irradiation, change rheologiacal properties and particle size distribution of dispersion contained gum tragacanth. Irradiation treatment up to 0.75 kGy increase zeta potential, but irradiating at higher doses decrease it again. Results of studying parameters showed that irradiation changes the functional properties by affecting on structure. These changes depend on irradiation dose Conclusion: Gum tragacanth irradiation may improve the functional properties by affecting on structure.



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