We pride ourselves on sourcing our mushrooms exclusively from organic farmers on small-scale farms in Canada, the US, Siberia and Alaska. This deliberate choice ensures that our products are free from dextrin, starch, or lab-grown materials, and also avoids any association with corporate agriculture. By directly partnering with these independent growers, we bypass intermediary suppliers commonly used by larger entities, guaranteeing the quality and purity of our mushroom materials.

Our organic mushroom fruiting bodies are cultivated on farms rather than in warehouses. Our farmers carefully create an environment that mimics the natural habitat of mushrooms, growing them on the native hardwood, which is the mushroom’s preferred substrate.

Hardwood-grown mushroom fruiting bodies contain a higher concentration and greater variety of bio-active compounds, such as beta-glucans, triterpenes, and ergosterols. This cultivation method is crucial in ensuring the production of high-quality and potent mushroom extracts.

The entire fungal life cycle, from seed to harvesting, can take up to 12 months for some mushroom species.

• The mushrooms are carefully hand-harvested at the precise moment when they reach their peak potency.
• After harvesting, they are dried in the sun to increase vitamin D content.
• Then the mushrooms are transported to the extraction facility.

Step 1: Receiving and Sorting the Raw Material 

• Upon arrival at the extraction facility, the dried mushroom fruiting bodies are carefully examined and sorted by hand to eliminate any impurities. Subsequently, they are ground into a coarse powder.

Step 2: Hot Water Extraction 

• The ground mushrooms are placed into an extraction tank where they are subjected to hot water. The heat effectively breaks down the chitin present in the mushroom walls, releasing a range of beneficial components such as vitamins, minerals, and active compounds. The resulting liquid filtrate is then drained and set aside.

Step 3: Dual Extraction 

• To further maximize the extraction of active compounds, an ethanol solution is introduced to the remaining mushroom material in the extraction tank. This step is particularly crucial for species with thick cell walls. The resulting liquid filtrate is collected and combined with the hot water filtrate obtained in the previous step.

Step 4: Membrane Separation 

• The combined hot water and dual liquid filtrates undergo a specialized membrane separation process. This process ensures that substances with large molecular sizes, including beta-glucans and other active compounds, are retained and concentrated effectively.

Step 5: Concentration and Drying 

• Using a vacuum, the liquid filtrate is concentrated until it transforms into a powder. Importantly, the solids that were removed during the extraction process are not wasted and are added back in. The spray drying method is utilized without the use of excipients and fillers, employing mushroom on mushroom assistance during spray drying instead of maltodextrin. The final powder undergoes steam sterilization before being packaged, free of any remnants of water or alcohol.

• Chaga and reishi mushrooms require dual extraction, involving both hot water and alcohol, because they possess beneficial compounds that are not fully water-soluble. Dual extraction ensures that these non-water-soluble compounds, such as triterpenes, are effectively extracted from the mushrooms. These species also tend to have thicker cell walls, making it more challenging for the hot water extraction alone to release all the desired active components.
• On the other hand, lion's mane, turkey tail, and cordyceps mushrooms primarily contain water soluble active compounds. These compounds can be efficiently extracted through hot water extraction alone, as they readily dissolve in water. Additionally, the cell walls of these mushrooms are not as dense as those of chaga and reishi, allowing for easier access to the water-soluble components during extraction.
• Therefore, the different extraction methods are employed based on the unique composition and properties of each mushroom species, ensuring that the most effective extraction process is utilized to obtain the desired bioactive compounds.

• Beta-glucans
• Alpha-glucans/starch
• Active compounds analysis
• DNA verification of strains
• Extract testing
• Additives, dextrin, and fillers testing
• Heavy metals testing
• Pesticide testing that exceeds United States Pharmacopeia (USP) standards
• Ergosterol testing to ensure fungal purity

Complete microbial testing for bacteria, yeast, E. Coli, mold, and coliforms

Purest Mushroom extract powders consist of 100% pure mushroom fruiting bodies. Our products do not contain any added binders, fillers, starch, grain, or mycelium.

Yes, we do. Please follow the link below for an article including all our COAs.

Purest Mushroom COAs

Typically, consumer brands like Purest Mushrooms do not appear in the USDA Organic Integrity database. This is because the brands themselves do not directly apply for organic certification. It is the facilities where the end products are produced that need to undergo the organic certification process. The facility producing our extracts is Evolve Contract Manufacturing and they are listed as certified in the database. USDA Organic Integrity Database for Evolve Contract Manufacturing

Our extracts have a shelf life of 2 years from the manufacturing date. They can be stored on the countertop, in a cupboard, or in the fridge. It is important to keep them away from excessive heat and light.