1

votes

Toxic green color oozing out from purple sweet potatoes baked with egg whites?

Answered on August 19, 2014
Created November 19, 2012 at 12:11 AM

I just baked the purple sweet potatoes and it was a little soft on one end with blakish dots in the middle of the potato around the soft bad end. So I baked the potatoes with egg whites to give it some crisp but what i found was the egg whites binded to something in the sweet potatos that had a green color and I ended up with some weird dark green liquid that binded to the egg whites. I know egg whites bind to biotin when raw so i'm thinking what the heck did it bind to when cooked? What was that green stuff in other words? was it toxic? i know the color green in potatoes is highly toxic and i know potatos originally were highly toxic. Would appreciate some feedback

A2c38be4c54c91a15071f82f14cac0b3

(12682)

on November 19, 2012
at 01:20 AM

This seems likely. I've made ph paper from anthocyanin containing juices, they can turn green at basic conditions.

  • Size75 avatar

    asked by

    (246)
  • Views
    13.1K
  • Last Activity
    1430D AGO
Frontpage book

Get FREE instant access to our Paleo For Beginners Guide & 15 FREE Recipes!

2 Answers

4
1d0497f8781845ab371b479455bfee8e

(11157)

on November 19, 2012
at 12:20 AM

When I boil purple sweet potatoes, often the water is a greenish color. It's just the anthocyanins.

http://en.wikipedia.org/wiki/Anthocyanin

A2c38be4c54c91a15071f82f14cac0b3

(12682)

on November 19, 2012
at 01:20 AM

This seems likely. I've made ph paper from anthocyanin containing juices, they can turn green at basic conditions.

3
32f5749fa6cf7adbeb0b0b031ba82b46

(41747)

on November 19, 2012
at 12:23 AM

Likely the same phenomenon that you see in hard-boiled eggs. Iron + sulfur = green iron sulfide. Egg whites are sulfur rich, there's likely enough iron in the potatoes to react with it.

Answer Question


Get FREE instant access to our
Paleo For Beginners Guide & 15 FREE Recipes!