Inhibitory effect of eggs on vitamin B12 absorption: description of a simple ovalbumin 57Co-vitamin B12 absorption test.
Ovalbumin and egg yolks, mixed separately in vitro with radiocyanocobalamin (57 Co-vitamin B12), were served to normal volunteers in a cooked form. Ovalbumin, and to a lesser degree, egg yolks were observed to inhibit vitamin B12 absorption. This observation explains the rather poor assimilation of vitamin B12 from eggs labelled in vivo with 57 Co-vitamin B12.
D000042:Absorption; D003037:Cobalt Radioisotopes; D004530:Egg Yolk / Q000009:adverse effects; D004531:Eggs / Q000009:adverse effects*; D005260:Female; D006801:Humans; D010047:Ovalbumin / Q000494:pharmacology*; D014805:Vitamin B 12 / Q000378:metabolism* / Q000652:urine
D003037:Cobalt Radioisotopes; D010047:Ovalbumin; D014805:Vitamin B 12