Physicochemical Properties of Iranian Rice Bran Protein Concentrate

Rice bran is a by-product of rice milling industry، that contains considerable quantities of protein، fat، carbohydrate and minerals. According to the chemical composition، rice bran might show suitable physicochemical properties that might have industrial applications. In this research protein concentrates were prepared from defatted bran obtained from two varieties of rice (Neda and Tarom) and their chemical composition and physicochemical properties namely protein yield and protein extraction yield، water adsorption index and water solubility index، nitrogen solubility index، bulk density and color parameters were evaluated. Protein yield was in the range of 8. 52-8. 74 (%). Rice bran protein concentrate of Tarom had higher bulk density (0. 24 g/g) and protein concentrates had significant differences in some color parameters. It was concluded that rice bran has the potential to be used as an ingredient in functional food formulations to enhance the nutritional values and functional properties of the product.