If looking at pollen analysis you will notice tryptophan values absent from the AA summary. I have been told it's due to added cost to these projects. 
My question are;
Is knowing the tryptophan not extremely important when examining the AA profile in that pollen sample? DeGroot based all his ratios off that one limiting Tryptophan value. 
Is there an updated or alternate AA ratio used by researcher to determine the AA profile in the samples ?
Is there a baseline tryptophan value for canola and other pollens that can be found documented somewhere to help bring context to these pollen analysis charts?

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