Hvorfor det?? Jeg har hørt det stikk motsatte..
Vad gäller gulan (plommen) så kan den gärna vara rå, då en del av de nyttiga mikronutrienterna (vitaminer/mineraler) försvinner vid uppvärmning.
Men vitan bör kokas/stekas, annars försvinner upp mot hälften av proteinerna:
"Egg proteins contribute substantially to the daily nitrogen allowances in Western countries and are generally considered to be highly digestible. However, information is lacking on the true ileal digestibility of either raw or cooked egg protein."
"The true ileal digestibility of cooked and raw egg protein amounted to 90.9 ± 0.8 and 51.3 ± 9.8%, respectively."Digestibility of Cooked and Raw Egg Protein in Humans as Assessed by Stable Isotope Techniques
The Journal of Nutrition Vol. 128 No. 10 October 1998, pp. 1716-1722
Fulltext:
http://jn.nutrition.org/cgi/content/full/128/10/1716"The availability of stable isotope-labeled protein allowed us to determine the amount and fate of dietary protein escaping digestion and absorption in the small intestine of healthy volunteers using noninvasive tracer techniques."
"Amounts of 5.73% and 35.10% (P < 0.005) of cooked and raw test meal, respectively, escaped digestion and absorption in the small intestine."Amount and fate of egg protein escaping assimilation in the small intestine of humans
Am J Physiol Gastrointest Liver Physiol 277: G935-G943, 1999;
Fulltext:
http://ajpgi.physiology.org/cgi/content/full/277/5/G935D