NFS 411 Lecture Notes - Lecture 3: Magnesium, Potassium Phosphate, Polyphosphate
4 Feb 2023
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Skeletal health: phosphorus, fluoride, and magnesium: phosphorus, essential structural component of cell membranes and nucleic acid, but is also involved in i. ii. iii. iv. Regulation of acid-base balance: rda = 700 mg/day, serum concentrations = 2. 5 - 4. 5 mg/dl, found organically in most food sources. Fish: not well distinguished in plant foods. Cannot be cleaved in human intestine due to the lack of phytates i. ii: vegetable-based phosphorus bioavailability is usually < 50, component of many commonly used food additives i. Increased use of food additives, fast food, ready to eat food. Estimated daily intake of p has more than doubled i: 500 mg/d to 1000 mg/d, highly processed meat and poultry has twice as much p as naturally occurring, function i. Bone: major structural component of bone in the form of a calcium phosphate salt of hydroxyapatite , lays down collagen during bone formation. Increased excretion of p to stimulate ca reabsorption (pth)
