Suc gastric(stomac
proteine+H2O+pepsina+HCl(creeaza mediu acid,transforma pepsinogenul in pepsina)⇒⇒⇒⇒albumoze+peptone
Suc pancreatic(intestin subtire)
proteine+albumoze+peptone+H2O+proteaze pancreatice(tripsina chemotripsina carboxipeptidaza elastaza colagenaza)⇒⇒⇒⇒⇒oligopeptide(2-5 AA) sau chiar AA
Suc intestinal(intestin subtire)
oligopeptide+H2O+oligopeptidaze⇒⇒⇒⇒⇒AA