Eggs can be separated into three sections—the shell, egg white, and egg yolk. Egg yolk is the yellow part which is used to feed the developing embryo. Egg yolk has many nutrients.

egg yolk nutrition facts


Egg yolk contains about 2.7 grams of protein, which occupies almost half of the total egg protein. Egg yolk is considered the complete protein because it contains all of the imperative amino acids. Amino acids include lutein and zeaxanthin that can help to prevent the development of different types of cancer.


Egg yolk is rich in vitamins. It includes vitamin B2, B5, B12, A, D, E, and K. Vitamin B2 can promote the development and regeneration of cells, and promote the development of skin, nails, and hair. It can also improve eyesight, alleviate eye fatigue and affect the absorption of iron. Vitamin B5 has the function of produce antibody. It plays an important role in hair care and skin. Vitamin B12 plays an important role in the nervous system. It is also important for metabolism and blood cells. Vitamin A, D, E and K are only found in egg yolks and not in egg whites. Vitamin D is especially important for bone growth. Egg yolk is one of the few foodstuffs that have vitamin D naturally. It can meet 10% of the body’s vitamin D requirement.
Egg yolk also contains choline. It can help promote heart and cardiovascular health. Choline can also help promote brain development, improve memory and regulate cardiovascular function.


Egg yolk contains various essential minerals, such as calcium, magnesium, iron, potassium, sodium, and selenium. Although egg white and egg yolk all contain minerals, egg yolk occupies the most of it. For example, egg yolk occupies 90% of whole egg’s calcium and 93% of iron. Iron can help to prevent iron deficiency anemia in children and adults. Potassium has a relation with blood pressure, if the potassium level is low, then the people are likely to suffer from hypertension. Selenium can help protect cells and reduce the probability to cause cancers. Egg yolk provides nearly 10% of recommended phosphorus.

Cholesterol considerations

Cholesterol helps to maintain the flexibility and permeability of cell membranes. For normal people, it is safe to consume one egg yolk per day. For those people who have high levels of cholesterol, ask your doctor about including yolks in your diet plan.

Eggs breaking and separating machine is used to break eggs and then separate the egg yolk from egg white automatically.