Potassium is the primary intracellular cation (positive ion) in humans, required for the normal functioning of all cells in the body. It is necessary for regulating the transmission of nerve impulses, muscle contraction and blood flow. Fruits and non-grain vegetables are rich in potassium. Potassium citrate and potassium phosphate are the two forms of potassium naturally found in foods, while potassium chloride is the form most commonly added to processed foods and used in dietary supplements. In healthy individuals, approximately 85% of dietary potassium is absorbed through the intestine. Most potassium leaves the body through the urine; however, heat exposure and exercise can cause increased loss of potassium via sweat 1.
The U.S. Food and Drug Administration (FDA) has established a Daily Reference Value (DRV) of 3,500 mg potassium for adults and children 4 or more years of age (21CFR101.9). DRVs are a set of dietary references for energy-producing nutrients, cholesterol, sodium and potassium that are considered amounts sufficient to meet the daily requirements of healthy individuals. DRVs serve as the basis for calculating the percent daily value (%DV) amounts found on dietary supplement and food labels.
Rice fiber is the soluble and insoluble fiber obtained from the bran layer of the rice kernel.
Rice bran is made from the bran layer, underneath the hull layer, of rice, Oryza sativa. Rice bran is high in dietary fiber, and is an excellent source of protein, vitamin E, thiamin, niacin, vitamin B6, pantothenic acid and a number of minerals, such as iron and magnesium. It is also a good source of folate and riboflavin 2. Rice bran also contains beta-sitosterol and other phytosterols, along with the essential omega-3 fatty acid alpha-linolenic acid (ALA) 3.