This is some info about eggs and why they are best partially cooked. I just throw them in boiling water for about 5 mins. It cooks the white but not the yolk.
Avidin is in the egg white
Biotin is in the egg yolk.
There is more biotin than there is avidin.
Even if every molecule of avidin bound itself to a molecule of biotin there would still be more than enough biotin left over. Biotin is in many foods
From PetEducation.:
http://www.peteducation.com/article.cfm?cls=2&cat=1662&articleid=712
"Biotin deficiencies have been reported following the ingestion of raw egg whites. Raw egg whites contain an enzyme called avidin that acts to destroy biotin. It is best if raw egg whites are not fed to dogs or cats. Cooking inactivates avidin. The yolk is very high in Biotin and if
the whole egg is fed, the avidin in the white and the high biotin in the yolk cancel each other out."
From the Linus Pauling institute:
http://lpi.oregonstate.edu/infocenter/vitamins/biotin/
"Although biotin deficiency is very rare, the human requirement for dietary biotin has been demonstrated in two different situations: prolonged intravenous feeding without biotin supplementation and consumption of raw egg white for a prolonged period (many weeks to
years). Avidin is a protein found in egg white, which binds biotin and prevents its absorption. Cooking egg white denatures avidin, rendering it susceptible to digestion, and unable to prevent the absorption of dietary biotin (7)."
From Absolute Astronomy Encyclopaedia:
"Biotin deficiency rarely occurs in healthy individuals. This is due to the facts that the daily requirements of biotin are low [and] many foods contain adequate amounts, bacteria synthesize small amounts, and the body effectively scavenges and recycles biotin from bodily waste. However, deficiency can be caused by excessive consumption of raw egg-whites over a long period (months to years). Egg-whites contain high levels of avidin, a protein that binds
biotin strongly. Once cooked, the egg-white avidin becomes denatured and entirely non-toxic.
Sources of Biotin:
* Eggs
* Fish
* Milk and milk products
* Whole-grain cereals
* Legumes
* Yeast
* Broccoli and other vegetables in the cabbage family
* White and sweet potatoes
* Lean beef
