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Technology · Bioproduction & equipment / Downstream purification

Green extraction (SC-CO2, DES, ultrasound)

Advanced green extraction technologies including supercritical CO2, deep eutectic solvents, and ultrasound intensification for zero-residue bioactive recovery.

Risk: medium US · EU · CN Science: why it works → verified · 8 Sources (0 independent)

1 · What it gives

Green extraction technologies represent a fundamental shift in downstream processing, replacing volatile organic compounds with supercritical CO2 (SC-CO2), deep eutectic solvents (DES), and physical intensification methods. Operating at supercritical conditions (typically above 31.1°C and 74 bar for CO2), these systems achieve zero-residue recovery of high-value bioactives. Ultrasound-assisted extraction (UAE) operates at 20-40 kHz to induce acoustic cavitation, reducing processing time from hours to 10-15 minutes while increasing yields by up to 35%. These technologies synergize to enable the production of premium pharmaceutical and cosmetic ingredients that meet strict clean-label and zero-solvent standards.

The key directions of green extraction are:

  1. Supercritical fluid extraction (SC-CO2): Solvent-free extraction operating up to 1000 bar with over 98.5% CO2 recirculation.
  2. Deep Eutectic Solvents (DES / NADES): Environmentally benign solvent mixtures combining hydrogen bond donors and acceptors for polar compound recovery.
  3. Ultrasound-Assisted Extraction (UAE): Acoustic cavitation for rapid cellular lysis and mass transfer enhancement.
  4. Microwave-Assisted Extraction (MAE): Internal dielectric heating causing mechanical lysis for rapid intracellular product release.

Sectoral value chain#

[Biomass prep] ──> [Solvent add] ──> [Intensification] ──> [Phase separation]
                                  │
                          (Cavitation)
                                  │
                                  ▼
[B2B ingredient] <─── [QA / QC] <─────┘

Value chain levels#

LevelDescriptionKey inputs/outputs
Raw materialsPreparation of biomass, microalgae, or agricultural byproducts.In: Wet biomass.
Out: Dried and milled powder.
Solvent systemsApplication of SC-CO2, DES, or aqueous mixtures.In: Dried biomass.
Out: Slurry or fluid mixture.
Physical intensificationApplication of ultrasound (20-40 kHz) or microwaves.In: Slurry.
Out: Lysed cellular matrix.
Extraction & transferDiffusion of target compounds into the green solvent.In: Lysed matrix.
Out: Enriched solvent phase.
Phase separationDecompression or liquid-liquid separation.In: Enriched solvent.
Out: Crude extract and recovered solvent.
StandardizationQuality control for pesticide screening and zero residual solvents.In: Crude extract.
Out: Validated B2B ingredient.

Cross-cutting technologies of the sector:

  • Acoustic cavitation: High-shear microjets for cellular disruption.
  • Supercritical chromatography: High-resolution fractionation using dense CO2.
  • Solvent recovery loops: Closed-loop systems achieving >98% fluid recycling.

2 · What it replaces 0 · matched by industry

No graded substitution linked yet.

3 · How to implement 6 steps

  1. 1
    Biomass preparationFormulation & blending
    Microalgae are harvested, centrifuged to 15% moisture, spray-dried, and ball-milled to mechanically disrupt the tough sporopollenin cell wall, increasing potential yield from <5% to >95%.
    Who can do this step matched automatically
    Advanced Enzyme Technologies (NSE) India
    ✓ ISO 9001 500 m3
    “This is a satellite blending, mixing and formulation facility, located at Vashind near Shahapur and dedicated to the company’s Animal Nutrition business.”
    India Glycols (NSE) India
    ✓ ISO 9001 7,500 MT/ industrial scale
    “Recent expansions and new facilities across процесses: MEG production growth (up to 200,000 MTPA), EO purification, ethoxylate, sulphation, formulation plants, and …”
    Rossari Biotech (NSE) India
    ✓ ISO 9001 industrial scale
    “The company also announced a new greenfield blending facility in Thailand to boost Southeast Asia operations and smarter capacity utilization across its HPPC, TSC, and AHN …”
  2. 2
    Extractor loadingExtraction
    Dry algal powder is loaded into stainless steel cartridges, installed in the high-pressure extractor, and sealed with Triclamp fittings while nitrogen purges oxygen to prevent astaxanthin oxidation.
    Who can do this step matched automatically
    India Glycols (NSE) India
    ✓ ISO 9001 7,500 MT/ industrial scale
    “ Novel technologies, including super critical technology for nutraceuticals where carbon dioxide is used as a green solvent during extraction processes.”
    VTR Biotech 溢多利 (SZ 300381) China
    “VTR Biotech is a global science-driven biotechnology company founded in 1991, active in research, development, production, and distribution of advanced enzyme solutions, plant …”
    ScaleUp Bio Singapore
    10,000 L pilot scale
    “Core capabilities span pilot-industrial fermentation and downstream unit operations (centrifugation, TFF, chromatography, solvent extraction, spray/freeze drying) with cGMP …”
  3. 3
    Pressurization & UAE
    Liquid CO2 is pumped and heated to 45°C, reaching 350 bar to enter the supercritical state, while industrial ultrasonic sonotrodes (28 kHz) are activated to disrupt the boundary layer and increase mass transfer by 4-5x.
  4. 4
    Extraction & transferExtraction
    SC-CO2 dynamically diffuses into the lysed cells, solubilizing non-polar astaxanthin and lipids, while the saturated fluid is continuously drawn off to the separators over a 90-minute cycle.
    Who can do this step matched automatically
    India Glycols (NSE) India
    ✓ ISO 9001 7,500 MT/ industrial scale
    “ Novel technologies, including super critical technology for nutraceuticals where carbon dioxide is used as a green solvent during extraction processes.”
    VTR Biotech 溢多利 (SZ 300381) China
    “VTR Biotech is a global science-driven biotechnology company founded in 1991, active in research, development, production, and distribution of advanced enzyme solutions, plant …”
    ScaleUp Bio Singapore
    10,000 L pilot scale
    “Core capabilities span pilot-industrial fermentation and downstream unit operations (centrifugation, TFF, chromatography, solvent extraction, spray/freeze drying) with cGMP …”
  5. 5
    Decompression
    Pressure is dropped in two stages (to 120 bar, then 50 bar), forcing CO2 into its gaseous phase and precipitating the dark red astaxanthin oil, while >98.5% of the CO2 is condensed and recycled.
  6. 6
    Standardization
    The crude oil is standardized to 10.0% concentration using carrier oils, tested via GC-FID for zero residual solvents, and packaged in airtight aluminum canisters under a nitrogen blanket.

4 · Who delivers

Matched suppliers (matched automatically)

EvonikGermanyProduceractive

In the services and supply catalogue 2 · paid service

Chromatography resins · Downstream — separation & purification

Leading companies and institutes (from the brief)

Company / InstituteCountryKey products / platformsTech featuresStatus 2026
Flavex Naturextrakte🇩🇪 GermanyBotanical extractsSC-CO2 with selective fractionationcommercial
Natex Prozesstechnologie🇦🇹 AustriaHigh-pressure extractors1000 bar scalable SC-CO2 systemscommercial
Evonik Industries🇩🇪 GermanyDES/NADES systemsCholine-based deep eutectic solventscommercial
Radient Technologies🇨🇦 CanadaNatural ingredientsHigh-power MAE intensificationcommercial
Valensa International🇺🇸 USAAstaxanthin & lipidsHigh-throughput SC-CO2commercial
Givaudan🇨🇭 SwitzerlandFood ingredientsUAE combined with NADEScommercial

5 · Rules & route to market

United States

The US market is driven by the booming demand for clean-label consumer products, cosmetics, and pharmaceutical ingredients, with a market size estimated at $1.2 billion in 2025.

Supercritical CO2, Clean Label, High-pressure automation#

  • Cannabis and botanical extraction: Widespread adoption of SC-CO2 for selective extraction of CBD/THC and terpenes without thermal degradation or toxic hexane residues.
  • Automated pressure systems: Deployment of continuous high-pressure extractors (up to 700 bar) reducing OPEX.
  • Regulatory alignment: Rigorous alignment with USDA Organic and FDA GRAS standards.
European Union

In the European Union, green extraction is deeply integrated into circular bioeconomy goals and strictly regulated by REACH and VOC reduction directives.

Upcycling, Cosmetics premiumization, Green certification#

  • Agri-food upcycling: Valorization of byproducts (e.g., lycopene from tomato pomace) using SC-CO2 and eutectic mixtures.
  • Cosmetics premiumization: Major cosmetic brands mandating 100% green extraction to eliminate methanol or hexane allergen risks.
  • Rigorous certification: Compliance with Ecocert, COSMOS Organic, and strict GMP manufacturing standards.
China

China leads as the world’s largest producer of plant extracts, rapidly transitioning its vast traditional capacities to green chemistry pathways to meet strict export standards.

DES/NADES, Ultrasound intensification, Export compliance#

  • Academic-industrial DES integration: Widespread use of deep eutectic solvents (choline, urea, sugars) for extracting polyphenols and ginsenosides from traditional medicine raw materials.
  • Continuous physical intensification: Massive deployment of industrial ultrasonic and microwave lines, boosting yields by 20-35%.
  • Zero-residue export advantage: Transitioning to green methods allows Chinese exporters to meet stringent US and EU limits on Class 1 and Class 2 residual solvents.

6 · Money: tenders & grants

GrantCircular innovative advanced materials: facilitating the transition from design to markets (RIA) (Innovative …
European Commission · EU
Feb 2, 2027
109 days
GrantTextile circularity through advanced processing and manufacturing technologies and system approaches (IA) …
European Commission · EU
Feb 2, 2027
109 days
GrantDeveloping novel recycling technologies for complex plastic materials applying biotech solutions
European Commission · EU
Sep 22, 2027
341 days
GrantIncreasing riparian and coastal areas resilience to climate change, including in waterfront cities and …
European Commission · EU
Sep 21, 2027
340 days
GrantSEEDING CRITICAL ADVANCES FOR LEADING ENERGY TECHNOLOGIES WITH UNTAPPED POTENTIAL (SCALEUP) READY
Advanced Research Projects Agency Energy · United States
Sep 29, 2029
1079 days

7 · Tech stack & innovations

Green extraction relies on combining novel solvents with physical wave fields to accelerate mass transfer and disrupt cellular matrices.

  1. Supercritical CO2 Dynamics:
    • Operates above 31.1°C and 73.9 bar to achieve liquid-like density with gas-like diffusion.
    • Typically utilizes 5-15% bio-ethanol co-solvents for polar compound extraction.
  2. Deep Eutectic Solvents:
    • Hydrogen bond donor/acceptor mixtures that melt significantly below individual component points.
    • Offers zero volatility, flammability, and high affinity for polar molecules.
  3. Acoustic and Microwave Intensification:
    • UAE (20-40 kHz) generates localized pressure spikes up to 1000 atm via adiabatic microbubble collapse.
    • MAE (2.45 GHz) induces internal dipole heating, boiling intracellular water for mechanical lysis.

Sources 8 · 0 independent · 8 producer sites

Producers' own sites 8

  1. Flavex producer checked 2026-01-22 · link not kept
  2. Natex producer checked 2025-04-24 · link not kept
  3. Evonik producer checked 2026-04-01 · link not kept
  4. Radient producer checked 2026-03-26 · link not kept
  5. Valensa producer checked 2025-11-12 · link not kept
  6. Givaudan producer checked 2025-12-01 · link not kept
  7. Beijing gingko group producer checked 2026-06-25 · link not kept
  8. Chenguang biotech producer checked 2026-06-25 · link not kept