Agaricus Blazei

Many names, one species

Agaricus blazei Murrill (the most common trade name), Agaricus subrufescens (the correct modern scientific name), Agaricus brasiliensis (a synonym used in part of the literature), Cogumelo do Sol (Brazil, "mushroom of the sun", after the Piedade region where it was first cultivated commercially), Himematsutake (Japan, 姫松茸), almond mushroom (after its characteristic almond aroma), ABM (industry abbreviation). All of these names refer to the same species. Its origin is linked to Brazil, and it first gained popularity as a supplement ingredient in Japan. It is a heat-loving species that does not occur naturally in the Polish climate, so wild foraging from Polish forests is out of the question.

Typical batch specification

Typical batch: β-glucans 20-40% by the Megazyme K-YBGL method (depending on the form). Total polysaccharides 30-50% by the phenol-sulfuric method. Cadmium and heavy metals (lead, cadmium, mercury, arsenic) tested by ICP-MS and controlled against EU limits (cadmium as the critical parameter for this species). Pesticides: multi-residue panel. Microbiology compliant with the European Pharmacopoeia (Ph.Eur.). Extraction ratio 10:1 for the extract form. Moisture ≤ 5%. Every batch has a full COA with test methodology, with particular attention to cadmium.

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Mechanisms described in the literature

Studies on Agaricus blazei (in vitro, animal models and clinical work) describe above all the immunological direction linked to β-glucans, as well as aspects of genoprotection and safety. Below are the three best-documented areas, given as mechanistic literature, not as claims about the product's action.

1. 01

   Immunomodulation via (1→3),(1→6) β-glucans

   The best-described direction in the literature. Agaricus blazei (subrufescens) contains β-glucans with a (1→3),(1→6) structure and protein-polysaccharide complexes, described as biological response modifiers. Mushroom β-glucans bind to Dectin-1 and TLR receptors on immune cells. The review by Hetland et al. [2008, Scand J Immunol] collected preclinical and clinical data on the effect of A. blazei on NK cell activity, interleukin levels and immunoglobulin titres. This is mechanistic and preclinical literature, not a basis for health claims about the product.

2. 02

   Genome protection (genoprotection) in in vitro models

   A second direction described in in vitro work. A β-glucan isolated from A. blazei protected human hepatoma HepG2 cells against the genotoxic effects of benzo[a]pyrene, without showing genotoxic or mutagenic activity of its own [Angeli et al. 2009]. Later work in this strand [da Silva et al. 2013] analysed the effect of A. blazei β-glucan on ERCC5, CASP9 and CYP1A1 gene expression and the metabolic profile in HepG2. These are cell-line results describing a mechanism, not a clinical effect in humans.

3. 03

   Safety profile and cadmium as a critical parameter

   A third aspect, crucial for raw-material selection. Agaricus blazei can accumulate cadmium from the substrate, so the source and cultivation conditions have a real impact on EU-limit compliance. In a phase I clinical study in patients in remission, cadmium exposure from an A. blazei supplement amounted to about 25% of the tolerable daily intake from food, and doses of up to 5.4 g per day for 6 months caused no laboratory abnormalities [phase I clinical study, PMC3092499]. The practical conclusion: Agaricus safety begins with a controlled source and cadmium testing by ICP-MS on every batch.

Application of the extract

Capsules and tablets: standard filling with extract or fruiting-body powder (for powdered forms, density, flowability and filling efficiency matter). Functional-mushroom blends: Agaricus as an ingredient high in β-glucans. Drink powders: the extract form, more soluble. We match the form and specification to the target application. Whatever the format, the foundation remains documented cadmium control.

Caution

Contraindications and special groups: do not use in children, pregnant or breastfeeding women. Post-organ-transplant state with active immunosuppression (cyclosporine, tacrolimus, mycophenolate) - β-glucans activate Dectin-1 and TLR. Autoimmune diseases in an active phase - consider with caution.

Requires consultation with a doctor: people taking medication or coping with chronic diseases should consult a doctor before use. Cadmium and agaritine: because of the species profile we pay particular attention to controlling cadmium content against EU limits - this is the fundamental element of Agaricus raw-material safety. As standard we put the most important warnings on the label of the final consumer product.