dietary pqq is apparently rapidly metabolized and excreted, but so are all of the rest of the b vitamins, and it doesn't really help me understand whether it's useful, or how much i need.
i will acknowledge that some scientists "suspect" that pqq is generated by humans in small amounts, but there's no proof of it and we have to consequently assume that all utilized pqq is dietary, for now. plants pull it from the soil; all plants use soil, so all plants have some pqq. further, they have a clearer use of it, apparently....
but, as it is with algae and omega-3, if the ultimate source is the bacteria then why not eat the bacteria? yeast is a fungi (pity.), but the premise of a low-calorie, high-vitamin bacteria supplement is pretty easy to swallow, if i can figure it out.
so, what bacteria make pqq? can we just eat them? do the probiotic bacteria make pqq?
the following article explains a little:
apparently, the primary host is...pneumonia. that's maybe not such a good idea, for a dietary supplement. well, i mean - take it if you want it, but no thanks. i'll pass. and, as i sort through that article, it's not helping much in providing for further potential sources.
there's a lot of ideas that could potentially work themselves out that i can imagine exploring to clear conclusions, but there just isn't currently useful data out there about this and there's consequently not much i can do. i need to call for clearer data regarding the amount of free pqq and the amount of bound pqq and whether binding pqq is useful as a delivery mechanism or just leads to the destruction of the host material.
if you want dietary pqq, eat plants.
that's all we got right now.
i'll need to look into q3, next, but no promises.