Sara Rrahbaran; Aazam Aarabi
Abstract
Introduction: The consumption of dietary fiber plays an important role in the prevention of illnesses such as diabetes type 2, hypercholesterolemia. Dietary fibers are not only desirable for their nutritional properties but also for their functional and technological properties. This study was undertaken ...
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Introduction: The consumption of dietary fiber plays an important role in the prevention of illnesses such as diabetes type 2, hypercholesterolemia. Dietary fibers are not only desirable for their nutritional properties but also for their functional and technological properties. This study was undertaken to investigate the possibility of alkaline hydrolysis to remove fiber from rice bran. Material and methods: In this study, the extraction of fiber from rice bran was carried out in the presence of sodium hydroxide as an alkaline media and under autoclave condition. The Response Surface methodology was evaluated by the central composite design (CCD) to build a model based on three variables including the time (X1), temperature (X2) and the concentration of Hydrogen Peroxide (X3) for the extraction of fiber, and water binding and fat binding capacity of produced fiber.Results and Discussion: Results showed that the optimum conditions for the maximum production of extracted fiber were 35min, 99.6 °C and 13.47% for time, temperature and the concentration of hydrogen peroxide, respectively. Results indicated that temperature was the most significant factor influencing considerably on fiber extraction and fiber fat binding capacity and none of the parameters had significant effect in the level of (0.05) on the water binding capacity of fiber
Fatemeh Raiesi; Mohammad Hojjatoleslami; Seyed Hadi Razavi; Mahdi Bahman; Mohammad Ali Shariaty
Abstract
In this study, three varieties of rice including Tarom, Anbarbo and Hashemi were selected and their heavy metals Content were analyzed. Subcritical water was used to provide rice bran extract at temperatures 100 and 120 ° C. In order to provide grape juice treatments, we used 5, 10, 15 and 20 % of extract ...
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In this study, three varieties of rice including Tarom, Anbarbo and Hashemi were selected and their heavy metals Content were analyzed. Subcritical water was used to provide rice bran extract at temperatures 100 and 120 ° C. In order to provide grape juice treatments, we used 5, 10, 15 and 20 % of extract in the formulation of red grape drink. samples which had packed and pasteurized, kept in the refrigerator for three months, then Rheological measurements were carried out by using Brookfield rheometer at 5°C .Physical and chemical characteristic evaluated by using SPSS software and one-way ANOVA and Duncan test >P) 0.05). Increasing temperature results in increasing rice bran extraction in subcritical water extraction method. Investigation of rheological properties showed that increasing in amount of rice bran extract cause to decrease consistency coefficient and increase flow index. Consistency coefficient of treatments during storage indicated that consistency coefficients were increased for all treatment
