Aqueous extraction, composition, and functional properties of rice bran emulsion

Abstract

The effect of temperature (20-60°C) on the aqueous extraction of emulsified rice bran oil from commercial rice bran was described. The total solids, protein, fat, and carbohydrate contents of the rice bran emulsions extracted at various temperatures were 4.82-6.99, 1.05-1.40, 0.82-1.65, and 2.65-3.36%, respectively. The mean droplet sizes of the rice bran emulsions extracted at 20, 30, 40, 50, and 60°C were 4.35, 2.92, 3.04, 4.40, and 3.73 µm, respectively. The phenolics extracted at various temperatures ranged from 63.28 to 82.51 mg/100 mL emulsion. The antioxidant capacity (oxygen radical absorbance capacity, ORAC) of rice bran emulsions extracted at various temperatures ranged from 2087 to 3505 µmol Trolox ® equivalents per 100 mL of emulsion. The relationship between ORAC and the total phenolic content was highly significant (R 2 = 0.87). The shear stress and apparent viscosity of rice bran emulsions in response to shear strain were similar to those of homogenized whole milk. Hence, the composition and functional properties show the potential of aqueous rice bran extracts as food-grade emulsions.

Improvement of Oxidative Stability of Rice Bran Oil Emulsion by Controlling Droplet Size

“…Consumers have recently become aware that plant oils including rice bran oil have important health benefits, and new research in this field is attracting immense public interest. Rice bran oil contains well‐balanced saturated and unsaturated oils and provides an excellent source of vitamin E, antioxidants, oryzanol and other micronutrients (Monsoor et al . 2003).…”

Preparation and characterization of high‐quality rice bran proteins

“…Food utilization of rice bran is limited because of lipid hydrolysis (free fatty acid formation) and subsequent oxidation (off‐flavor development) during storage. Lipase must be inactivated or else lipid must be removed before the rice bran can be used as a food ingredient 3. Removal of the oil fraction in rice bran also improves its stability by removing the substrate for lipase.…”

Trends of Judicial Activism for the Advancement of Muslim Family Laws in Bangladesh: A Critical Appraisal

“…81 In a subsequent case, 82 the attitude of the court was changed, though minimally, and allowed the maintenance based on an 'appropriate case'. 83 However, the issue of past maintenance was finally settled in the landmark case of Jamila Khatun v. Rustom Ali, 84 where the Appellate Division of the Supreme Court of Bangladesh came up with a progressive mind by recognizing the right to past maintenance to the wife and overturned the orthodox ruling of High Court Division in the Rustom Ali v. Jamila Khatun Case. 85 While coming to this forward-looking and positive decision, the Appellate Division took reliance on a leading case of Pakistan that was Sardar Muhammad v. Nasima Bibi 86 which also granted past maintenance in favour of the wife.…”