Absorption of Protein -- grams per feeding

I'm looking for studies the confirm/deny how much protein we can absorb at one time.  I've seen it posted many times that 30 grams is the max and I've followed that rule. However, someone I know has asked where I heard/read it and for the life of me I cannot recall where.  I'm looking for study/studies that state the max RNYers absorb. Thanks and advance!

This is one that has been discussed here before. check out this link http://www.obesityhelp.com/forums/nutrition/a,messageboard/a ction,replies/board_id,5389/cat_id,4989/topic_id,3394039/pag e,1/#26434839