Nutrition experts say that the types and proportions of amino acids for synthesizing human collagen are fixed. The amino acids in pig trotter collagen are very concentrated, which恰好 meets the needs of human collagen synthesis.
However, pig trotters are not the only source of human collagen. One should still pay attention to a diversified daily diet. Because basically all foods contain amino acids, just some have more and some have less. The human body will re-synthesize various proteins, including collagen, according to its needs by recombining these amino acids in appropriate proportions.