How do I extract ovalbumin from egg whites?

Question

I'm looking for an easy to follow procedure (no jargon preferred)

Answer 1

The easiest way is as follows:

• Crack the egg and separate the egg white from the yolk.
• Add distilled water to the egg white, and a white precipitate (solid) should form.  This is the globular protein, and not the ovalbumin.  You don't want this stuff.
• Carefully pour off the water leaving the solid on the bottom.  Easier to filter it through a coffee filter or regular filter paper, keeping the stuff that comes through the filter.  That will contain the ovalbumin.

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Jargon stuff:  The ovalbumin is soluble in water, and the globular proteins are not.  So, adding water to egg whites will result in precipitation of the globulin leaving the ovalbumin in the supernatant fluid.  Filtration will separate precipitate from soluble ovalbumin.