Might this process be applied to the Shroud of Turin? That might prove interesting.
That’s fabric, not parchment, but regardless that’s not a topic I’d enjoy participating in, at least, I haven’t in the past. :’)
It would certainly establish the origins of the fabric in terms of how the fabric and/or (not to mentioned the patched and repaired segments) and then where on the globe the Shroud may have originated. I don't see any important distinction for DNA testing between fibers of cloth woven from plants vs. fibers of parchment made from plants.