Why are Great Northern beans considered an incomplete protein source?
Answer
They lack all nine essential amino acids.
Although Great Northern beans offer a substantial amount of protein, approximately 8.3 grams per 100-gram serving, they are classified as an incomplete protein source, similar to most legumes. This means that the protein structure within the bean does not inherently contain all nine amino acids that the human body requires but cannot synthesize on its own. To achieve a complete amino acid profile necessary for optimal functions like muscle repair and immune support, individuals consuming a plant-based diet are advised to strategically pair these beans with complementary sources, such as grains like rice or corn, consumed throughout the same day.
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