Why would eggs have blue in them?
Recently when I scrambled some eggs, I noticed some bright blue patches inside the eggs. Not around the outside, but when I took a bite out of part of one there was a bright blue patch in the uneaten half.
It wasn't even a natural, mold sort of blue, but looked almost like dye. But I didn't notice anything when I first cracked the egg. One of my friends has had a similar experience. How could this happen?
I discarded the rest of the eggs, but would they have been safe to eat?
Best Answer
With boiled eggs, the yolk can get a blue/green tint, particularly when over-cooked or cooked at too high a temp a reaction most of us have seen. It is a reaction between sulfur and iron. The same can occur with scrambled eggs. Over cooking and cooking at high temperature is considered a prime culprit. Cooking in iron reportedly increases the likelihood as it increases the available iron for the reaction. If the eggs are old, or if the birds have had a diet that resulted in a bit more sulfur in the yolk it might be more likely.
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Quick Answer about "Why would eggs have blue in them?"
The blue color is created by oocyanin, which is applied early in the laying process. The blue pigment goes right through the shell, unlike the brown pigment. So blue eggs are blue inside and out.Why is my egg blue inside?
When you purchase chicken eggs at the market, they usually have white or brown shells. But some breeds of chicken produce blue or green eggs. The blue color is caused by insertion of a retrovirus into the chicken genome, which activates a gene involved in the production of blue eggs.Can you eat bluish eggs?
Specifically, it changes the chemistry of the eggshell so that it can take in biliverdin, a bile pigment, from the chicken's uterus. Weird! And not necessarily harmful; blue eggs are widely eaten and the Araucana, in particular, is a very popular exotic chicken breed.Are blue eggs healthy?
The color of an egg shell has influence on people's buying choices. Some believe that brown, green, blue, or pink eggs are healthier than white chicken eggs. The truth is, there is no nutritional difference between colorful chicken eggs and white chicken eggs.What are bluish eggs?
Boiled Egg Blushing is a softy with a secret! This bashful friend has a goofy stitch smile and peachy rosy cheeks. With marvellous creamy marshmallow fur, a sunshiney yolk and toasty cord booties, this giggly egg can't help cracking up!Sources: Stack Exchange - This article follows the attribution requirements of Stack Exchange and is licensed under CC BY-SA 3.0.
Images: Pixabay, Alizee Marchand, ROMAN ODINTSOV, ROMAN ODINTSOV