downwardsfromzero
Boundary condition
This (great) paper has been discussed recently over in this thread.An1cca said:TBM potency is confirmed in this recent article (paragraph 3.3.7):
Validation and exploratory application of a simple, rapid and economical procedure (MESQ) for the quantification of mescaline in fresh cactus tissue and aqueous cactus extracts
Objective: An effective way to protect the currently endangered wild populations of Lophophora williamsii is to select mescaline-rich specimens for selective propagation. Also, users of these and other entheogenic cacti are in need of an accessible way of dosing extracts. This research aims to...zenodo.org
It's good to know that each segment of TBM equates to about one dose. In that respect, it's lucky that brewster 'only' tried 227g/four segments and didn't rush in on Wolfie's suggestion of 500 grams!
What VDS' analysis does show is that there's ample activity in the cactus from mescaline alone without having to invoke the presence of MAOI action from other components, even if they do perhaps play a role sometimes.