What makes eggs white

Brown and white eggs have similar nutrients, and their health benefits are not dependent on their shell color. People should always choose fresh eggs that retailers store in a refrigerator. A person can identify different standards, such as organic and free-range, by looking for the USDA shield. Farming conditions and production methods can affect the overall color of the eggshell.

People may want to choose eggs from hens that have less stress and more freedom to roam. Eggs can provide valuable nutrients as part of a balanced diet. Learn more about the health benefits of eggs, some ideas for preparing them, possible….

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Learn more about the foods and drinks that are good for liver health here. Which are healthier, white or brown eggs? Egg colors Which is healthier? Why are eggs different colors? Are brown eggs healthier than white eggs? Which tastes better? Follow our live coverage for the latest news on the coronavirus pandemic. While the quality and taste of an egg can be changed by what the chicken eats and their living conditions, the colour of the eggshell is determined by the hen's genes.

Nathan Kilah, senior lecturer in chemistry at the University of Tasmania, got interested in the chemical make-up of eggshells when he got backyard chooks. All eggshells are made of the same stuff, with colours added by chemicals that either coat the shell or permeate through it.

The protoporphyrin is deposited as a layer on top of the calcium carbonate, so brown eggshells are white on the inside. Brown eggs are laid by some of the most commonly kept backyard breeds, such as barnavelders and Rhode Island reds, while white eggs come from breeds including silkies and leghorns. Blue coloured eggs are starting to become more common as backyard breeders look for variety with breeds such as araucana and ameraucanas.

While a blue egg layer will never lay a brown egg, crossbreeding of chickens can bring out a range of eggshell colours.

Pigments and protoporphyrin change the colour on the outside of an egg, another chemical changes the colour on the inside. Unlike the outside of an egg, the colour and taste of its contents is affected by the chicken's diet and living conditions. We acknowledge Aboriginal and Torres Strait Islander peoples as the First Australians and Traditional Custodians of the lands where we live, learn, and work.

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