nen888 said:..hey jamie, you wrote:..i'm curious as to what kinds of flavonoid rich foods had this effect..berries? certain fruits? this could explain a lot of previously unexplained potentiations of some entheogens..I have experience some weird potentiation a number of of times with vaped DMT and ayahuasca when adding alot of flavanoid rich foods into my diet.
..i'm now finding the list i hastily compiled on p1 here of MAOI Plant Flavonoids, quite handy when looking through phytochemical survey lists..i'm sure this list is by no means complete yet..
.
Blueberries and cranberries are known to contain quantities of the flavonol group including quercetin and myricetin. Blackberries and black grapes are high in the flavonoids epicatechin and catechin while raspberries, cherries and red grapes may be high in anthocyanidins and cyanidin...
Bananas contain quantities of anthocyanidins including cyanidin and delphinidin. Citrus fruits including grapefruit, lemons, limes and oranges are high in the flavonone group of flavonoids including hesperetin, naringenin and eriodictyol. Members of the Rosaceae family of tree fruits including apples, pears, plums, peaches and apricots are known to be high in catechin and epicatechin...
Onions, particularly red onions and green onions, are also high in quercetin...
Thyme is high in the flavones luteolin and capers though rarely used are very high in the flavonols kaempferol and quercetin. The best news for some people may be that chocolate is known to be very high in catechins, particularly if consumed in the dark variety.
.. a chemical supplier says: "Harman... Potent inhibitor of monoamine oxidase A and B (IC50 values are 0.5 and 5 μM respectively)"..Rommelspacher [2002] - found as an inhibtor of MAO-B, "Harman had an IC50-value of approximately 1 μM (competitive interaction)."..this is comparable (slightly stronger infact from my understanding of IC-50 values) to Harmine, of more fame..the paper by Samoylenko et al. [2010] posted by endlessness in this thread www.dmt-nexus.me/forum/default.aspx?g=posts&t=26443 "found Harmaline and harmine showed..inhibitory activity against...(MAO)-A and -B enzymes (IC50 2.5 and 2.0 nM, and 25 and 20 μM)."Harman (1-methyl-beta-carboline) is an endogenous compound with neurotropic properties in rats and humans. In a novel in vitro binding assay, the binding site of [3H]harman has been characterized in the rat crude mitochondrial (P2) fraction. The binding was saturable and reversible.
..so, some of these flavonoids (e.g. apigenin, quercetin) are about as potent MAOIs as Harmine (the higher the IC50 value, the lower the potency)..cool, huh?..Among the isolated compounds, flavones such as apigenin (2) and luteolin (3), as well as the flavonol, quercetin (7) showed potent inhibitory effects against the MAO activity with IC50 values of 6.5, 22.6, and 31.6 microM, respectively. However, the flavone glycosides, apigenin-7-O-beta-D-glucuronopyranoside (1) and luteolin-7-O-beta-D-glucopyranoside (4), showed mild MAO inhibition (IC50 values: 81.7 and 118.6 microM, respectively). The flavanonol derivatives, taxifolin (5) and aromadendrin (6), also showed weak inhibition (IC50 values: 154.7 and 153.1 microM, respectively). Furthermore, quercetin (7) had a more potent inhibitory effect on MAO-A (IC50 value: 2.8 microM) than MAO-B (IC50 value: 90.0 microM). Apigenin (2) and luteolin (3) also preferentially inhibited MAO-A (IC50 values: 1.7 and 4.9 microM, respectively) compared with MAO-B (IC50 values: 12.8 and 59.7 microM, respectively).
..interesting..have you got the paper/study?.. - if it's an underground report, the identity of the harman may not be as sound (sourced from where?), depending on where it came from..i've heard this said in the underground, but the bio-med-data contradicts this..repeatably contradicts since 2001 infact, including in-vivo enzyme studies ..wira said:Re: harman as an MAOI, animal studies might be misleading here as harman has been taken orally by humans at up to 250mg, chased with 35mg DMT, with no activity.
..err, i didn't know this was stated in this thread..can you point it out..?Re: harmaline in durian... can you provide a source for this? I see it is repeated verbatim all over the net, but no one has an actual reference for it, and I've been unable to find one through my usual research means.
..this is an interesting point..to add a little bit more bioassay info to the thread, i admit to being the subject of the P. subpeltata (synon. P. alba) plus dmt experiment reported in Voogelbreinder 2009..P. alba (subpeltata) is reported by Neu to contain Harman as the sole alkaloid..the one experiment successfully orally activated the dmt, though not as pleasantly as P. incarnata (the preferred species) or P. coccinea..By the way, if harman is so strong inhibitor of MAO-b also, then MAOI diets would probably be more recommended with it than with the rue/caapi harmalas?