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Green spot in cooked egg white?

Answered on August 19, 2014
Created September 29, 2011 at 1:11 AM

I hardboiled a couple of eggs today. After I cooked them I peeled them and set them aside; after they had been resting for a minute or so a green "veiny" looking patch appeared on the outside of one of them. I threw it away, having no idea WTF it was, but can someone explain it? Was it safe to eat? They were fresh, smelled fine and the other egg from the same carton didn't have any discolouration.

Cc7381bd787721575ea9198048132adb

(5541)

on September 29, 2011
at 03:49 PM

Did some more searching, couldn't find anything about a green vein but lots of cases of the entire egg white having a green tint to it because of riboflavin and chlorophyll in the chicken's diet. I doubt you'll ever see something like that again ;)

7d0c3ea9bf8be00b93e6433d8f125ac3

(7540)

on September 29, 2011
at 06:09 AM

Um, no. It was one spot on the white, and it looked normal immediately after peeling.

77877f762c40637911396daa19b53094

(78467)

on September 29, 2011
at 04:46 AM

?An Easter egg?

7d0c3ea9bf8be00b93e6433d8f125ac3

(7540)

on September 29, 2011
at 02:23 AM

Yes I thought about that but since it wasn't a ring around the yolk (and it was just on the outside of the white...I cut the egg open and the rest of the white and yolk were normal) I couldn't figure out what it was.

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1 Answers

1
Cc7381bd787721575ea9198048132adb

on September 29, 2011
at 02:21 AM

The egg white contains sulfur and the egg yolk contains iron and when an egg is cooked at a high temp, the two can combine to form ferrous sulfide, which is usually a green ring that shows up in the yolk in an over cooked hard boiled egg. Never heard of it showing up in the egg white but that's my best guess.

7d0c3ea9bf8be00b93e6433d8f125ac3

(7540)

on September 29, 2011
at 02:23 AM

Yes I thought about that but since it wasn't a ring around the yolk (and it was just on the outside of the white...I cut the egg open and the rest of the white and yolk were normal) I couldn't figure out what it was.

7d0c3ea9bf8be00b93e6433d8f125ac3

(7540)

on September 29, 2011
at 06:09 AM

Um, no. It was one spot on the white, and it looked normal immediately after peeling.

Cc7381bd787721575ea9198048132adb

(5541)

on September 29, 2011
at 03:49 PM

Did some more searching, couldn't find anything about a green vein but lots of cases of the entire egg white having a green tint to it because of riboflavin and chlorophyll in the chicken's diet. I doubt you'll ever see something like that again ;)

77877f762c40637911396daa19b53094

(78467)

on September 29, 2011
at 04:46 AM

?An Easter egg?

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