Talk:Avidin

In Practice
Companies that sell this are:


 * For anything to be included in the article, we need reliable sources. Icek 00:32, 24 June 2007 (UTC)

Digestability
One egg contains about 3.6 g egg white protein (according to the USDA food database). According to the Wikipedia article on egg white, 0.05% of that is avidin, that is 1.8 mg per egg. If one ingests 300 micrograms (the RDA, I know there are institutions which recommend only 150 micrograms per day) of biotin, that is 1.23 micromoles. Each mole of biotin needs 1/4 mole of avidin to bind it, so we need 0.31 micromoles avidin, which would be about 21 mg of avidin, more than 11 eggs, to bind all the biotin. If the avidin really becomes a problem, only comparatively little of it is digested. Why is it not broken down more efficiently by digestive proteases? Icek 00:32, 24 June 2007 (UTC)


 * Some simpler, more readable version of this might be useful as an addition to the actual article (and perhaps also to the article Egg_(food)). It would be most useful to give how much biotin can be bound by each egg. Of course this also depends on the avidin coming in contact with the biotin in the digestive system, and one would assume that all of one's daily biotin intake would not be consumed at the same time as the avidin. It seems to me the math also should be done of comparing the amount of biotin in an egg yolk with the the amount of avidin in the white. I'm finding it hard to find this information...one source said 25 mcg, another said 18-25 mcg, neither were authoritative. 25 mcg would seem to approximately balance out the avidin, however it is not clear to me how much of the biotin is destroyed by cooking, so this also ought to be factored in. --Ericjs (talk) 01:27, 28 November 2011 (UTC)

I have asked my GP about the issue of avidin and its relation to vitamin deficiency. He told me there was no danger of vitamin deficiency even when consuming the amount of eggs that an average bodybuilder takes in a day. —Preceding unsigned comment added by Pierce.Schiller (talk • contribs) 15:24, 28 April 2011 (UTC)