Complex carbohydrates, which are actually large chains of glucose molecules, consist primarily of starches and fiber. Rice, a complex carbohydrate food, provides more vitamins, minerals, and fiber than simple carbohydrate foods. One-half cup cooked white rice provides 0.03 grams of dietary fiber. One-half cup cooked brown rice provides 1.6 grams of dietary fiber. Return to Chart Protein Dietary proteins provide amino acids to build and maintain tissues, and to form enzymes, some hormones, and antibodies.
Proteins function in some body regulating processes and are a source of energy.
Proteins, unique among the energy nutrients because they contain nitrogen, are composed of amino acid units that are linked in chains. All of the eight amino acids must be present at the same time and in the right proportion in order for protein to be synthesized. The protein in rice is well balanced because all eight amino acids are present and in proper proportion. Therefore, rice is a unique cereal grain. Biological value is a measure of protein quality, assessed by determining the extent to which a given protein supports nitrogen retention.