Our Process
After two years of R&D, we upgraded our extraction methodology to the best process out there: ultrasonic-assisted extraction. Here's the science behind cavitation, the studies comparing it to conventional methods, and why it matters for what's in your bottle.
Guided by more than two years of research and development, Mindfull Mycology's extracts have entered a new chapter: ultrasonic-assisted extraction. It's a departure from the Soxhlet method we relied on previously, and it's not a change we made lightly. In fact, it's the result of digging through the extraction science for more than two years to find a method that consistently outperforms conventional techniques on the metrics that actually matter: how much of the mushroom's bioactive content ends up in the bottle, how gently that content is handled, and how much energy, water, and solvent it takes to get there.
This article walks through the science behind ultrasonic extraction and the peer-reviewed research comparing it to Soxhlet extraction and other conventional extraction methods for medicinal mushrooms.
What Is Ultrasonic-Assisted Extraction?
Ultrasonic-assisted extraction (UAE) uses high-frequency sound waves, typically in the 20 to 100 kHz range, to accelerate and intensify the transfer of bioactive compounds out of plant or fungal material and into a solvent. Rather than passively soaking mushroom material in solvent for hours or weeks and waiting for compounds to diffuse out on their own, UAE delivers mechanical energy directly into the mixture, physically disrupting cell structures in a fraction of the time.
This is a fundamentally different approach than a Soxhlet extractor, which is a slow, passive, heat-driven process that works by repeatedly cycling, boiling, condensing, and refluxing solvent through the material over 6 to 48 hours.
Ultrasonic extraction uses a probe-type processor — in our case, a Hielscher UP400St, a 400-watt, 24kHz industrial ultrasonic processor — submerged directly into the mushroom-solvent mixture, with an integrated temperature sensor to keep the process within a controlled, low-temperature range throughout the run.
The Cavitation Effect: How Sound Waves Break Open Fungal Cells
As ultrasonic waves pass through the mushroom-solvent mixture, they create rapid alternating cycles of compression and rarefaction, meaning that regions of high pressure are followed immediately by regions of low pressure. During the low-pressure phase, microscopic vapor bubbles form in the liquid. During the very next high-pressure phase, those bubbles violently collapse. This formation-and-collapse cycle is called cavitation, and it's the mechanism that makes ultrasonic extraction so effective.
Each bubble collapse releases a highly localized burst of energy, basically akin to a microscopic shockwave, that physically ruptures whatever cell structures happen to be nearby. This shockwave then pulses solvent through the ruptured cell structure, effectively pulling the compounds boun d within or concentrated behind this cell wall.
Research on the cavitation mechanism notes that the effectiveness of ultrasonic-assisted extraction can be mostly attributed to the hydrodynamic activity of acoustic cavitation, which disrupts cell walls and dramatically improves mass transfer between the solid material and the surrounding solvent.
This especially matters for fungi. Mushroom cell walls are built largely from chitin and beta-glucans, structurally tough amino-glucose polymers that evolved to resist exactly the kind of passive breakdown a simple solvent soak provides. Cavitation's mechanical force is uniquely suited to breaking through that resistance, giving the solvent direct access to compounds that would otherwise stay locked inside and behind the cell.
A direct comparison of hot water extraction, Soxhlet extraction, and ultrasonic-assisted extraction on cultivated mushroom β-glucans found that ultrasonic extraction produced a higher extraction rate, higher polysaccharide purity, and lower energy consumption than either conventional method.
The Research
What the Studies Show: Ultrasonic vs. Soxhlet and Other Methods
Head-to-head against Soxhlet: A study published in Ultrasonics Sonochemistry directly compared hot water extraction, Soxhlet extraction, and ultrasonic-assisted extraction on an artificially cultivated mushroom, measuring the yield, purity, and structural characteristics of the (1-3;1-6)-β-D-glucan recovered by each method. Ultrasonic extraction produced a higher extraction rate and higher polysaccharide purity than either Soxhlet or hot water extraction, while consuming less energy. Further, both the Soxhlet and Ultrasonic extracts demonstrated a similar monosaccharide composition, confirming that speed and efficiency didn't come at the cost of compound integrity.
Reishi: Researchers optimizing ultrasonic-assisted extraction conditions for Ganoderma lucidum found that a single UAE process could efficiently recover both polysaccharides and triterpenoids — the two compound classes that normally require a separate hot water phase and a separate alcohol phase in conventional dual extraction — while producing extracts with strong in vitro antioxidant capacity.
Cordyceps: Multiple studies have optimized ultrasonic-assisted extraction specifically for Cordycepin recovery from Cordyceps militaris. One orthogonal-design study achieved a Cordycepin yield of 7.04 mg/g (nearly 87% recovery) using a 60-minute ultrasonic extraction. A separate optimization achieved strong Cordycepin recovery using 100% water as the solvent at just 45°C, a meaningfully lower temperature than the sustained near-boiling conditions a Soxhlet run requires for hours at a time.
Lion's Mane: A study optimizing ultrasonic extraction of Hericium erinaceus fungal biomass found the method efficiently recovered Erinacine A and polyphenolic compounds with strong antioxidant activity — the same delicate, nerve-growth-factor-stimulating compounds that make Lion's Mane one of our most researched mushrooms.
Shiitake: A 2025 study in the journal Foods compared conventional, chemical, and ultrasound extraction of crude polysaccharides from Shiitake (Lentinula edodes), adding another data point to a growing body of research reaching the same conclusion across mushroom species: ultrasonic extraction consistently matches or outperforms conventional methods on yield while doing it faster.
Sustainability
A Lower-Impact Way to Extract
A Soxhlet extraction cycle typically runs 6 to 48 hours, with solvent held at a steadily high temperature the entire time. That requires sustained heating and continuous circulation of chilled coolant through the condenser for the full duration of the run, just to keep the solvent vapor condensing and cycling back through the material. Multiply that by every batch, every day, and it adds up to a genuinely resource-intensive process in energy, water, and solvent that has to be replenished.
Ultrasonic extraction sidesteps most of that. The energy requirement, treatment time, and temperature involved in UAE are all comparatively lower than conventional Soxhlet extraction, and the process achieves comparable or superior recovery using meaningfully less solvent per batch. The combination of less energy, less water, less solvent, and more medicinal compounds recovered is precisely why ultrasonic extraction has become a reference point in green chemistry: it's one of the few extraction upgrades that improves both the product and the process's environmental footprint at the same time.
Heat-Sensitive Compounds
Why Low-Temperature Extraction Matters for Cordyceps and Lion's Mane
Not every bioactive compound tolerates sustained heat well. Cordycepin, the signature compound in Cordyceps, and the compounds responsible for Lion's Mane's nerve growth factor effects, are both more delicate than the polysaccharides that make up the bulk of most mushroom extracts. A Soxhlet run holds solvent at or near its boiling point for hours at a stretch — conditions that raise real questions about how much of a heat-sensitive compound survives the process intact.
Because cavitation does the mechanical work of breaking open cells as well as efficiently pulling the compounds within and behind the cells, ultrasonic extraction can achieve strong recovery at meaningfully lower temperatures. The Cordyceps study cited above reached strong Cordycepin recovery using water as the solvent at just 45°C, far below a sustained boil. Our own process reflects the same principle at every stage: mushrooms are dehydrated at low temperatures before processing, the ultrasonic extraction itself runs with continuous temperature monitoring to stay in a controlled low range, and afterward we concentrate the extract using a rotary evaporator under vacuum — which lowers the boiling point of both water and ethanol, allowing us to reduce the extract at roughly 50°C for water and 35°C for ethanol rather than their normal boiling points of 100°C and 78°C. Every stage of the process is built around keeping the temperature controlled and low.
| Cavitation MechanismBubble collapse creates microjets & shockwaves that rupture tough fungal cell walls | Higher Yield & PurityOutperformed Soxhlet & hot water extraction in direct β-glucan comparison |
| Lower Energy UseShorter run times & lower operating temperatures than Soxhlet | Lower Water & Solvent UseNo hours-long condenser cooling cycle; less solvent per batch |
| Faster ProcessingMinutes to an hour per batch versus 6–48 hours for Soxhlet | Low-Temperature ExtractionProtects heat-sensitive Cordycepin, Hericenones & Erinacines |
| Scalable & ControlledContinuous temperature monitoring & automated data recording every batch | Third-Party VerifiedRegular batch testing sent to independent labs for potency & purity testing |
Our Process, Step by Step
|
1
|
CultivationEvery extract starts with U.S. grown Certified Organic or Georgia Grown Certified Naturally Grown mushroom fruit bodies. Sourcing quality is the ceiling for everything that happens downstream. |
|
2
|
ExtractionAfter low-temperature dehydration and pulverization, the mushroom material is combined with solvent and exposed to high-frequency ultrasonic sound waves from our Hielscher UP400St processor. This triggers cavitation — the rapid formation and collapse of microscopic bubbles — producing high-energy shockwaves that rupture cell walls and release the mushroom's compounds into the surrounding liquid. |
|
3
|
Concentration & ReductionAfter extraction, a 3-ton press removes the remaining solvent from the spent mushroom material to maximize recovery. We then use a rotary evaporator under vacuum — which allows water to boil at roughly 50°C and ethanol at roughly 35°C — to concentrate the extract to its final potency without exposing it to high heat. |
|
4
|
Final ProductOnce we reach our target extract ratio — between 1g/3mL and 1g/4mL — we batch, bottle, and label. We regularly send batches to third-party labs for independent potency and purity testing. |
The Honest Nuance: Why Tuning the Process Matters
Ultrasonic extraction isn't automatically superior in every configuration. Rather, the research is clear that parameters matter. Studies on other fungal polysaccharides have found that excessive or poorly tuned ultrasonic treatment can reduce the molecular weight of extracted polysaccharides compared to gentler methods, which can affect the extract's properties. Frequency, amplitude, treatment time, and temperature all have to be calibrated to the specific mushroom and compound class being extracted. Run it too aggressively and you can degrade the very compounds you're trying to preserve.
That's exactly what our two-plus years of R&D went toward: dialing in the specific frequency, amplitude, and timing settings for each mushroom species we work with, rather than running every batch through a single generic setting. It's the difference between adopting a technology and actually mastering it.
Explore Further
→ Medicinal Mushroom Dual Extracts: What They Are and Why They Matter
→ How to Make a Homestyle Dual Extract — the foundation of home extraction
→ Lion's Mane — A Natural Nootropic
→ Reishi — the Mushroom of Immortality
→ Turkey Tail — A Tonic for Tumors
→ Cordyceps — Energy and Endurance
Ready to try extracts made with ultrasonic-assisted extraction, third-party tested from 100% fruit bodies?
Shop Our Extracts →
This article is for informational and educational purposes only and describes Mindfull Mycology's production process as of the date of publication. As with any dietary supplement, consult with your physician before incorporating medicinal mushroom extracts into your regimen.
Sources
Kaewnarin, K. et al. Ultrasonically Extracted β-D-Glucan from Artificially Cultivated Mushroom, Characteristic Properties and Antioxidant Activity. Ultrasonics Sonochemistry. sciencedirect.com/science/article/pii/S1350417716301158
Optimization of ultrasonic-assisted extraction of polysaccharides and triterpenoids from the medicinal mushroom Ganoderma lucidum and evaluation of their in vitro antioxidant capacities. PLOS ONE. journals.plos.org/plosone/article?id=10.1371/journal.pone.0244749
Optimization of Ultrasonic-Assisted Extraction of Cordycepin from Cordyceps militaris Using Orthogonal Experimental Design. Molecules. mdpi.com/1420-3049/19/12/20808
Enhanced Adenosine and Cordycepin Extraction from Cordyceps militaris: Optimization via Ultrasound-Assisted Extraction and Response Surface Methodology. academia.edu/142970695
Optimization of Ultrasonic Extraction to Obtain Erinacine A and Polyphenols with Antioxidant Activity from the Fungal Biomass of Hericium erinaceus. researchgate.net/publication/347453818
Comparison of the Conventional, Chemical, and Ultrasound Extraction of Crude Polysaccharides and Their Properties from Lentinula edodes (Berk.) Pegler. Foods, 2025. doi.org/10.3390/foods14142428
A comprehensive review of the application of ultrasonication in the production and processing of edible mushrooms. pmc.ncbi.nlm.nih.gov/articles/PMC10825639
A comprehensive review of ultrasonic assisted extraction (UAE) for bioactive components: Principles, advantages, equipment, and combined technologies. pmc.ncbi.nlm.nih.gov/articles/PMC10594638
Soxhlet extractor. Wikipedia. en.wikipedia.org/wiki/Soxhlet_extractor