5L Fully Automated Compound Remediation System
A bench-scale system that refines a finished botanical extract, selectively removing unwanted constituents at room temperature while preserving the aromatics and actives.
COMERG • Basil extraction
Sweet Basil
Ocimum basilicum L.
Turn fresh basil leaf into a vivid, food-grade extract with COMERG equipment. Our cold, room-temperature, low-pressure process captures the sweet, green, peppery aroma of basil, the methyl chavicol and linalool that define the herb, with no heat to dull its lively top notes.
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47% methyl chavicol
The herb
The king of herbs
Basil, Ocimum basilicum, is one of the most loved culinary herbs in the world. Its sweet, green, slightly peppery aroma, with a soft anise lift, comes mainly from methyl chavicol and linalool, while a trace of eugenol adds the gentle clove note that rounds the scent.
The leaf is milled and processed cold, so the finished extract keeps the fresh, lively character of the living herb rather than a cooked, flat note. Nothing is added, and the natural aromatic balance is carried straight into the extract.
Raw material
Botanical nameOcimum basilicum L.
FamilyLamiaceae
Plant partLeaves
ConditionDried, ground
OriginBulgaria
AvailabilityAll year
The extract
What the process delivers
Run on COMERG equipment, basil leaf yields a vivid, standardised extract, batch after batch. Because the extraction is cold and solvent-light, with no high heat, the sweet green aroma carries straight through to the finished oil. The figures below are typical of a standardised BBas-50.1 grade.
47%Methyl chavicol
≥15%Volatile oil v/w
0.291DPPH IC50 mg/ml
<25 °CExtraction temp
~375 kgLeaves per kg extract
<0.1 g/kgSolvent residue
The method
Cold extraction, in three steps
No heat, no leftover solvent. This is what happens inside a COMERG aerosol system, and why the extract keeps the full basil character.
1
Pressurised R134a flooding
Non-toxic liquefied R134a gas is introduced to the milled basil leaf at controlled, low pressure. There is no heat, the cycle begins and stays at room temperature.
2
Selective aromatic dissolution
The liquid gas gently dissolves the methyl chavicol, linalool and the green aromatic compounds, while the fresh, volatile top notes stay structurally intact.
3
Recovery and pure extract
The R134a is fully recovered and recycled in a closed loop. What is left is a concentrated basil extract, with under 0.1 g/kg residue.
Aromatic profile
The compound fingerprint
Principal constituents identified by GC-MS, each above 1%. Methyl chavicol dominates, with linalool and methyl eugenol behind it, the combination that gives sweet basil its fresh, green, anise-edged scent.
0%20%35%47%+
Other extractables present, including germacrene, eugenol and cadinol. Per-batch GC-MS report available on request.
Specification
BBas-50.1 at a glance
Identity & origin
Botanical nameOcimum basilicum L.
Plant partLeaves
OriginBulgaria
Product codeBBas-50.1
CAS No.84775-71-3
EINECS No.283-900-8
Production
MethodLiquefied-gas extraction
TemperatureBelow 25 °C
SolventFood-grade (Dir. 97/60/EC)
Solvent residue< 0.1 g/kg
StandardisationDeclared volatile oil
Concentration1 kg ≈ 350-400 kg leaves
Physical
AppearanceDark green-brown liquid
Volatile oil50-60% v/w (ASTA)
INCI nameOcimum Basilicum Extract
Density950 g/l
Refractive index1.5067
Acid value19.7 mg KOH/g
Solubility & output
In oilsFully soluble
In 40% alcoholPartial
In waterInsoluble
Flash point> 62 °C
ContainerLined aluminium bottle
Shelf life2 years
Why basil, why cold
A fresh herb, captured whole
A concentrated leaf
Ocimum basilicum, Bulgaria
Plant partLeaves, milled
Leaves per kg extract~350-400 kg
Volatile oil≥ 15% v/w
AntioxidantDPPH IC50 0.291 mg/ml
Captured cold
Versus heat-based methods
Methyl chavicol47% kept
Linalool11%
Process temperature< 25 °C
Fresh green top notesPreserved
Applications
What you can make
Sauces & pesto-style
Meat & savoury foods
Seasoning blends
Fine perfumery
Skincare & cosmetics
Pharmacy
This basil extract is edible and can be used concentrated or diluted in a carrier oil to suit the application. Typical filling rates for the concentrated extract in food are 1 to 50 mg per kilogram of product.
Why the COMERG line
Built for fresh herbs like basil
The vivid, green freshness above is what the right equipment makes repeatable. Our line is engineered around the things that matter when you process a delicate, top-note herb.
Room temperatureR134a aerosol extraction works cold and at low pressure, so the volatile green top notes are never cooked off.
Keeps it freshThe methyl chavicol and linalool that carry basil's sweet, lively scent come through cleanly, not flattened by heat.
Fully automatedClosed-loop systems run the cycle for you, so results stay consistent and one operator can handle the line.
Fast cycles, high yieldLow-pressure extraction is quick and recovers up to 97% of the leaf's compounds, more than older high-pressure CO2 lines.
Scales with youFrom a 10 l pilot unit to 2000 l production, the same method grows from R&D batches to full output.
Clean and economicalIt uses around 85% less energy than solvent methods and needs no special hazardous-location facility.
Why it wins
Compared to the alternatives
Against steam distillation, solvent and CO2, cold R134a extraction keeps more of the basil, with a bright, true-to-leaf result.
| Feature | COMERG R134a | Steam distillation | Solvent | CO₂ supercritical |
|---|---|---|---|---|
| Process temperature | < 25 °C (room temp) | 100-150 °C | 40-70 °C | 31-80 °C |
| Aromatic preservation | 95%+ | 60-75% | ~85% | ~80% |
| Green top notes | Preserved | Partly lost | Mostly kept | Mostly kept |
| Compound recovery | up to 97% | 70-85% | 80-90% | 85-92% |
| Solvent residue | < 0.1 g/kg | None | Needs post-purge | None |
| Energy use | 85% less vs solvent | High | Medium-high | Very high |
| Special facility | Not required | Not required | Required | High-pressure safety |
From leaf to extract
The machines for basil
A complete COMERG line takes basil from fresh leaf to a finished extract. These are the core stages, each available as standalone equipment.
Aerosol extraction
The heart of the line. Liquefied-gas systems that pull basil oil cold, below 25 °C, from 10 l pilot units up to 2000 l.
Room temp • 97% recoveryView system
Conveyor dryer
Dries the fresh basil leaf gently and evenly before milling, protecting the green colour and the volatile aroma.
Prep stageView machine
The complete botanical line
From a 10 l pilot system to industrial 2000 l lines, the same cold process scales with your volume.
10 l - 2000 lBrowse all equipment
Product specificationFull composition, properties, packaging and handling for basil extract BBas-50.1.
Download PDF
Questions
Basil extraction, explained
A 100% natural basil leaf extract from Ocimum basilicum, product code BBas-50.1. It is led by around 47% methyl chavicol with 11% linalool, carrying the sweet green scent of fresh basil, with no additives.
Liquefied food-grade gas extraction at room temperature, below 25 °C, and low pressure. Because there is no high heat, the delicate aromatic compounds are preserved and solvent residue stays below 0.1 g/kg.
Basil's freshness lives in light, volatile compounds that prolonged heat flattens. Cold R134a extraction concentrates them cleanly so the extract keeps the bright, green, true-to-leaf character.
Roughly 1 kg of extract represents around 350 to 400 kg of basil leaf.
Yes. It is produced with a food-grade solvent per Directive 97/60/EC. Typical filling rates are 1 to 50 mg per kilogram of food product. It is a raw material for formulation, not for direct or undiluted use.
Yes. The same cold process runs from a 10 l pilot unit to 2000 l production systems, so you can start small and grow without changing method.
Yes. A per-batch GC-MS analysis is available on request, and a Safety Data Sheet per 2006/1907/EC is supplied with the product.
Set up your basil line
Tell us your throughput and target product. We will recommend the right system, share a yield estimate for your basil, and reply with pricing and lead time, usually within 48 hours.
COMERG extracts are raw materials for product formulation. They are not intended for direct consumption or for undiluted topical application in cosmetics, perfumery or aromatherapy. This information is provided to the best of our knowledge and is not a substitute for prior testing of suitability for the intended use. Keep away from children.
The basil line
Equipment for processing basil
The machines below make up the basil line, the equipment that takes the leaf through to a finished extract. Request a quote on any unit and we will reply with pricing and lead time.
Showing 17–26 of 26 results
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6″ SS Wiped Film Distillation System
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EtOH Fully Automated Ethanol Extraction System
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Gas Chromatography Analysis System
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Mold & Yeast Remediation System
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SHW 120L Subcritical Hot Water Extraction System
A solvent-free 120L production system that extracts polar, water-soluble compounds with pressurised hot water, delivering both a concentrated extract and an aromatic water.
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SHW 60L Subcritical Hot Water Extraction System
A solvent-free 60L system that extracts polar, water-soluble compounds with pressurised hot water, yielding both a concentrated extract and a fragrant aromatic water.
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Stick & Seed Separation System
A sifting and air-separation line that sorts dried botanical biomass into three clean fractions – flower and leaf, stalk, and seed – ready for extraction or sale.