It's not just about pregnant women, it's about women in general who may experience uterine discomfort due to the quinazolines.ouro said:By all means manske if you feel compelled to. Honestly I don't know enough about harmala alks generally to give them to a pregnant woman in the first place, regardless of vasicine.
That study also lists:ouro said:But as far as what we do know:
content of dried plant material for the other alks:
Vasicine (peganine) - 0.25%
Vasicinone - 0.0007%
Harmine - 0.44%
Harmaline - 0.096%
Which makes the vasicine content anything but negligible. An extract with such composition would contain about 1/3 vasicine by weight!
There are several studies to be found. The problem with some of these studies, such as the above mentioned, is the use of anhydrous methanol for the initial extract, upon which all further analysis is based. Obviously, less than 0.5% yield of betacarbolines is unusual and unexpected in the light of the results on the nexus and in this thread. Another study that used 1:1 methanol/dilute HCl for initial extraction found results more in line with yields reported here.ouro said:according to:
Pulpati H, Biradar YS, Rajani M (2008). "High-performance thin-layer chromatography densitometric method for the quantification of harmine, harmaline, vasicine, and vasicinone in Peganum harmala". J AOAC Int 91 (5): 1179–85. PMID 18980138.
AFAICS the data is mostly lacking. Even scientific studies seem to have trouble getting the procedures right. Did the person who prepared the samples for analysis in that thread use sufficient base when basing the manske filtrate? In my experience, when throwing in a boatload of lye, I got quite a bit of precipitate. This, when redissolved into a significantly smaller amount of acidified water, still yielded little harmala needles from re-manske.ouro said:Plus from personal experience and many other trials reported among rue extractors, basing leftover manske water recovers an extremely small amount of precipitate, which may contain a lot of harmala. I think there was even a lab test of this residue and it was determined to be mostly harmalas, but I might be misremembering. Does anyone recall this? At any rate, the amount of vasicine is very small.