Which essential amino acid is Amaranth notably rich in, making it a complete protein rare among many cereals?
Answer
Lysine
Amaranth is classified as a complete protein because it contains all nine essential amino acids required by the human body. A key characteristic setting it apart from many true cereals is its rich concentration of the amino acid lysine. Most plant-based grains are often deficient in lysine, necessitating complementary food pairings (like beans and rice) to achieve a full amino acid spectrum. Because amaranth supplies sufficient lysine, its protein is considered biologically more valuable for processes such as muscle repair and enzyme production without needing such careful dietary balancing.
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