Phos and Mg 3 pp - Phosphorus 2011 Phosphorus Good Sources...

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Phosphorus 2011 Phosphorus: Good Sources Best sources: high protein foods ~15 mg P/g protein Poultry Fish Meat Phosphorus: Good Sources Dairy products provide only 20-30% of dietary P compared to 60-70% f C of Ca
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Phosphorus: Other Sources • Nuts • Legumes • Cereals Cereals • Grains • Chocolate • Coffee • Tea Soft drinks Phosphorus: Forms Not usually found free in nature Organic: bound to proteins, lipids, sugars, etc. Inorganic: phytates (phytic acid) – Found in cereal grains: wheat, rice, corn – Beans, legumes, nuts Phosphorus as Phytic Acid Fig. 11-8, p. 443
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Phytic Acid Phosphorus less available as phytate When consumed with other minerals (Ca, Zn, Fe) – Phytates form complexes that bind the cations making them unavailable for absorption Table 11-5, p. 444 Food Processing Increases Phosphorus 1 oz. naturally aged cheddar h 1 oz. processed cheese 1 oz cheese spread < < cheese 145 mg 211 mg 257 mg
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