Just wanted to bump this and add the sources I use. I don't have time to read through the entire thread, so I apologize if these two suppliers have been mentioned.
I've spoken to owners of both, and I put the response to my email below the link to the product the quote refers to. Both are certified organic.
https://www.mushroom...3c886b3103f6262
"Our products are steam extracts, which is a mechanical method of
extraction. This proprietary process allows us to break the beta-glucans
off the cell walls making them bio-available. At the same time we
maintain and make available many the myriad of other constituents such as
triterpenes and antioxidants.
Hot water extracts will isolate the beta-glucans, but tend to lose many of
the other constituents, such as antioxidants and glyconutrients. In this
process the hot water extraction breaks some of the beta-glucans off the
cell wall, but not even close to all of them. Then the rest of the
mushroom, along with all the beneficial constituents still a part of the
mushroom, are thrown away.
Alcohol extracts can help draw out the di- and tri-terpenes, sterols as
well as other alcohol soluble constituents. The alcohol extraction method
results in a dilution of the original concentration of these compounds
that are in the mushroom, although it does increase the bioavailability of
these compounds. The beta-glucans and other beneficial polysaccharides are
not extracted whatsoever.
We don't make extracts focusing on one constituent - the majority of the
mushroom extracts out there are mostly composed of beta-glucans (also
referred to as polysaccharides on many labels). There are so many
different types of beneficial constituents in mushrooms in addition to
beta-glucans. We made the effort to have the ability to make steam
extracts of whole mushroom powders, so we could produce mushroom powders
that are both bioavailable and have the full range of medicinal benefits
that mushrooms have to offer. The triterpenes are responsible for the
cholesterol reduction, blood pressure reduction, allergy and asthma
relief, anti-inflammatory properties, etc.
Thank you,
Hunter
"
Also (2nd email, with text formatting issues):
"Mushroom Harvest medicinal mushroom powders are organically grown in a
manner exceeding organic standards to provide the highest quality product
possible. They are rich in 1,3 β-D and 1,6 β-D glucans,
glycoproteins, arabinoxylans, triterpenes, ergosterol and antioxidants.
The mushrooms and mycelium are grown on a certified organic substrate
with GMP’s, HACCP procedures, SSOP’s and with guaranteed P-values . The
mushrooms and mycelium are dried to a moisture level below 10% and are
ground to a fineness of 200 – 500 microns. The mushroom powders are then
activated by steam extraction to make the medicinal constituents readily
bio-available for maximum potency. Each lot is sent to an analytical lab
for microbial testing before it is cleared for shipping. Our product
requires no further processing on your part.
"
http://fungihealth.c...ne-extract-1-lb
"Hello !
The mushrooms and mycelium are dried to a moisture level below 10% and are ground to a fineness of 200 - 500 microns. The mushroom powders are then activated by hot water steam extraction (solvent free) to make the medicinal constituents readily bio-available for maximum potency. All of our mushroom extracts have a minium beta-glucan content of 20 %
Let me know if you have any more questions.
Bryan Warman
Fungi Health "
My impression of Mushroom Harvest was better, and I ordered 1lb of the extract once again. The previous batch I found to be about as potent, at 2 level teaspoons a day, as the Mushroom Science extract, both were efficacious. I will let you know how it works out, it should arrive tomorrow (they had a rapid turnaround time btw, shipped at 11am Monday, ordered Sunday night).