Egg Choline

Choline was established as an essential nutrient in 1999 with recommended daily intakes (RDIs) of 550 mg for

Table 6 Egg mineral content per large egg

Mineral

Whole

Albumen

Yolk

Calcium (mg)

26.5

2.3

21.9

Iron (mg)

0.92

0.03

0.46

Magnesium (mg)

6.0

3.63

0.85

Phosphorus (mg)

95.5

4.95

66.3

Potassium (mg)

67.0

53.79

18.53

Sodium (mg)

70.0

54.78

8.16

Zinc (mg)

0.56

0.01

0.39

Copper (mg)

0.05

0.01

0.01

Manganese (mg)

0.02

<0.01

0.01

Selenium (mg)

15.85

6.60

9.52

USDA National Nutrient Database for Standard Reference, Release 16 (July 2003). Nutrient Data Laboratory Home Page, http://www.nal.usda.gov/fnic/foodcomp

USDA National Nutrient Database for Standard Reference, Release 16 (July 2003). Nutrient Data Laboratory Home Page, http://www.nal.usda.gov/fnic/foodcomp

men and 450 mg for women. The RDI for choline increases during pregnancy and lactation owing to the high rate of choline transfer from the mother to the fetus and into breast milk. Animal studies indicate that choline plays an essential role in brain development, especially in the development of the memory centers of the fetus and newborn. Egg-yolk lecithin (phosphati-dylcholine) is an excellent source of dietary choline, providing 125 mg of choline per large egg.

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