The majority of ingested protein is digested and absorbed as amino acids, but small peptides can also be transported across the intestinal wall.

“quantitatively most of the of the protein will be completely uh digested and absorbed as amino acids over the intestinal wall then released in the portal vein then actually uh released via the liver into the circulation now there there are Transporters for uh for small peptides in the guts and so they have been uh yeah recognized and shown”