10 unique facts present in eggs For groceries, eggs is necessary to meet the nutritional needs of the body. It feels good, easily digestible and suitable to be consumed all age groups, from infants to the elderly. Another advantage of eggs is to be processed into various kinds of side dishes are delicious. To know better that this cheap source of nutrition, see 12 interesting facts about eggs that you may not know. 1. Egg protein has a utility value (net protein utilization) 100 percent. Compare with chicken meat (80 percent) and milk (75 percent). 2. Eggshells are made of calcium carbonate which is also the main basis of several types of materials antacids. Approximately 9-12 percent by weight egg consists of his skin. Egg shells also have pores so that oxygen can enter and carbon dioxide and moisture out. 3. Egg whites are made from protein called albumen and also contain niacin (vitamin B3), riboflavin (Vitamin B2), chlorine, magnesium, potassium, sodium and sulfur. Egg whites contain 57 percent of egg protein. 4. The color of egg yolks from hens determined by the food. The more grain that has a yellow and orange pigments are eaten by the hens, the egg yolk color kentallah. 5. The color of eggs also varies according to age and other factors. According to the Egg Safety Center, American, white eggs are somewhat murky it indicates that fresh eggs. A clear white color signifies that the eggs come from chickens that are old. Avoid eating eggs pinkish white or another color change. 6. Sometimes there is little blood in the egg. The blood is derived from blood vessels in the yolk broken. But these eggs remain safe to eat. 7. When hatched, the egg temperature around 40.5 degrees Celsius. The colder, the fluid in it will settle and the air cell is formed between two layers of eggs. 8. Hens capable of laying 250-270 eggs each year. 9. Most Americans prefer white chicken eggs. In Indonesia, most of the brown chicken egg. 10. Compared with chicken eggs, duck eggs have a more fishy smell and her skin has larger pores so that more would make a salted egg.