I used to do the same with my protien, but the longer it sits in the fridge the more nasty i thought it tasted. It used to get a hard film over the top after about 12 hours or so. but then again that is back in the day, when designer whey first came out.
as an aside, why do you guys even bother with glutamine ... its pretty much uselsess.
I don't do this for my family, my friends, women, accolades, pride, or ego. I do it for me and no one else, its just part of who I am.