Beta-glucan Paper Confirms Nammex White Paper Findings

A newly published research paper in the peer-reviewed  Redefining Medicinal Mushrooms, published in February, 2015.

Dr. McCleary’s paper examines different testing methods for measuring beta-glucans in basidiomycetes and utilizes whole dried mushrooms and off the shelf retail products as his sample material.

Table 2 shows the retail products tested:

Measurement of β-Glucan in Mushrooms and Mycelial Products - Table 2

Measurement of β-Glucan in Mushrooms and Mycelial Products – Table 2

Table 10 shows the testing results:

Measurement of β-Glucan in Mushrooms and Mycelial Products - Table 10

Measurement of β-Glucan in Mushrooms and Mycelial Products – Table 10

The alpha-glucan content (starch) in most of these products is extremely high.

Table 2 demonstrates that Product#2 is a mycelium on grain product which shows 66.4% alpha-glucan and 3.2% beta-glucan.

Product#3 also appears to be mycelium on grain with 72.5% alpha-glucan and 1.3% beta-glucan.

Product#8, which claims to be a “full spectrum” Cordyceps sinensis product, shows mostly alpha-glucan, 64.%, and 1.5% beta-glucan. This without question is mycelium on grain.

Product#9, which claims to be “100% organic ganoderma lucidum” shows 45.2% alpha-glucan and 7.3% beta-glucan.

Product#12, which is “Chaga mushroom (mycelium)” with other ingredients of “brown rice flour” shows 70% alpha-glucan and 0.0% beta-glucan.

In Redefining Medicinal Mushrooms we tested grains just to see what their alpha-glucan and beta-glucan content looked like. Our results are as follows:

Grain Tests from Redefining Medicinal Mushrooms
GrainAlpha-glucanBeta-glucan
Rice74%1%
Oats58%1%
Sorghum 64%2%

Our testing showed that even grain has a small amount of beta-glucans (1-2%). Pure mushrooms have very little amounts of starch, 1-5%.

So for the retail products listed above, how much is actually mushroom and/or mycelium?

The tests results would indicate that there is more grain than fungal tissue.

Measurement of β-Glucan in Mushrooms and Mycelial Products - Figure 2

This peer reviewed research by Dr. McCleary, confirms the test results reported in Redefining Medicinal Mushrooms and should be a wake up call for both companies and consumers. Genuine mushroom products are significantly different in quality, containing high levels of beta-glucans and low levels of alpha-glucans.  

As the results above demonstrate, the “mushroom” product you have purchased might be more grain than mushroom.

Full Paper: McCleary & Draga: Journal of AOAC International Vol. 99, no. 2, 2016