Wanted to research this before posting but dont have time so I will toss it out here.  All that has been said about protein sources in general is true, but the issue here is the assumption of the adjective "complete" - quinoa has become popular in human diets  because it is a "complete" protein - to humans. In this context, a "complete" protein  means it supplies all of the "essential" amino acids. "Essential" means more than just the ones a particular organism needs, it means the ones they need but can't make for themselves by their own anabolic processes. So, what may be "complete" for a human may not be "complete" for a bee. The way to determine this is to look at the a.a. profile of quinoa or any other potential ingredient and compare this to the a.a. that a bee must obtain from its food, that is, those it cant make for itself. I cant say for sure that someone already knows this, but I can say with the utmost certaintly that I do not know (!). I beleive this line of inquiry was considered in the development of FeedBee, for example, and hopefully others. 
Greg Hawkins
Everton, ON
Sent on the TELUS Mobility network with BlackBerry

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