NUTR 1010 Lecture Notes - Lecture 27: Heme, Cytochrome, Myoglobin
Document Summary
A trace mineral the opposite of a major mineral: need less than 100mg per day. Red you see in your blood is due to iron. Heme in meat, poultry, ish and seafood: we absorb heme iron the best, it"s in a heme molecule from hemoglobin or myoglobin. Nonheme iron in beans, lenils, grains and some vegetables, iron added to lour or breakfast cereals. Things that help absorpion of non-heme: vitamin c, beef (meat protein factor) Things that inhibit absorpion: calcium, phytates (whole grains, legumes, tannins (tea, fibre. Plant based diet 10: this is why vegans may have trouble geing enough iron. Do the dris take absorpion into account: yes! A component of myoglobin: transports oxygen in muscles. Found in enzymes that are needed to metabolize energy from cho, fat and protein: cytochromes in the electron transport chain. How does it work: binds to the iron in cytochromes and stops cells from using oxygen, death!!!
