PROTEIN DENSITY AND QUALITY OF KORO KRATOK (Phaseolus lunatus L. Sweet ) AND KACANG TUNGGAK (Vigna unguiculata (L.) Walp)
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Proteins are macronutrient, plays important roles in human health. It is essential to life because it is a vital par of the nucleus and protoplasm of every cell. The outer layers of skin, the hair, and the nails consist of almost entirely of an insoluble protein called keratin. The most active and abundant tissues of the body – the muscles and glandular organs- are high in protein content. Lean muscles, heart, and liver contain 17-21 percent protein. Connective tissues consists mainly of protein. Blood carries the important iron-containing protein hemoglobin in red blood cells. Therefore, the 50 gram daily requirement is a must to be fulfilled. Protein are larger and more complex molecules than those of either fats or carbohydrate. The large molecules of protein made up of great number of amino acids. The number of difference amino acids in the molecules of certain protein varies from 8 to 18 according to the size and complexity of the molecules of different protein. The number and composition of essential amino acids of protein determine utility of the protein for human health.
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