Final answer:
There is no set amount of protein that can be absorbed at once, as this can vary based on several factors. Proteins are generally absorbed efficiently in the small intestine with a high biological value and around 75-80% of amino acids from protein turnover are reused for new protein synthesis. Excessive consumption, especially from supplements, can lead to imbalances.
Step-by-step explanation:
There is no definitive amount of protein that can be absorbed at once as it varies widely depending on the individual's body physiology, the type of protein consumed, and overall health. However, most proteins are digested and absorbed in the small intestine at very high rates, with 95 to 98 percent efficiency.
The dietary amino acids obtained from proteins are absorbed through active transport mechanisms in the duodenum and jejunum. When taken as part of a complete diet, dietary protein typically provides all necessary amino acids for bodily functions. High biological value proteins like those found in egg and milk are almost entirely absorbed and utilized by the body. Excessive intake, particularly from amino acid supplements, can lead to competition for transport systems, potentially causing deficiencies. It should be noted that while the body can absorb a vast array of amino acids, not all ingested protein is used for new protein synthesis.