Question

Does gelatin contain tyrosine?

Answer 1

Sure. Not significant amounts, but sure. It has less than approximately `0.5%` of Tyrosine (Tyr, Y).

It's richest in Gly (`21%`), Pro (`12%`), Hyp (`12%`), and Glu (`10%`). The rest of the amino acid composition (Ala, Arg, Asp, Lys, Ser, Leu, Val, Phe, Thr, Ile, Hyl, Met, His) is `10%` or below. Again, this varies by gelatin sample.

https://en.wikipedia.org/wiki/Gelatin#Medical_and_nutritional_properties