where is folic acid absorbed in the body
Folate Folic acid used in fortified foods is a synthetic form called pteroylmonoglutamate.[99] It is in its oxidized state and contains only one conjugated glutamate residue.[99] Folic acid therefore enters via a different carrier system from naturally occurring folate, and this may have different effects on folate binding proteins and its transporters.[100] Folic acid has a higher bioavailability than natural folates and are rapidly absorbed across the intestine;[99] therefore, it is important to consider the Dietary Folate Equivalent (DFE) when calculating one's intake. Natural occurring folate is equal to 1 DFE;, however, 0.6 µg of folic acid is equal to 1 DFE.