To digest vitamin B 12 non-destructively, it is cleaved from its protein complex in the stomach where haptocorrin strongly binds and protects the B 12 molecules from stomach acid and during assimilation and circulation in the blood.
To digest vitamin B 12 non-destructively, haptocorrin in saliva strongly binds and protects the B 12 molecules from stomach acid as they enter the stomach and are cleaved from their protein complex. Haptocorrin continues to bind and protect the B 12 molecules from stomach acid and during assimilation and circulation in the blood.