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 • Ginger extraction
Zingiber officinale Roscoe
Turn ginger rhizome into a warm, food-grade extract with COMERG equipment. Our cold, room-temperature, low-pressure process captures the spicy, woody-citrus heart of the root, the zingiberene that defines ginger's aroma, along with the warming pungent fraction, all without heat.
The spice
Ginger is the rhizome of Zingiber officinale, a knobbly underground stem with a warm, woody, faintly citrus aroma and a familiar peppery heat. The scent comes mainly from zingiberene, the signature sesquiterpene of the root, while the warming pungency sits in the heavier gingerol and shogaol fraction.
The rhizome is dried, milled and processed cold, so the finished extract carries the full warmth of the spice. Ginger belongs to the same family as cardamom and turmeric, and shares their rich, aromatic character.
The extract
Run on COMERG equipment, ginger rhizome yields a standardised, high-strength extract, batch after batch. Because the extraction is cold and solvent-light, with no high heat, the warm aromatic notes carry straight through to the finished oil. The figures below are typical of a standardised BGin-70.1 grade.
The method
No heat, no leftover solvent. This is what happens inside a COMERG aerosol system, and why the extract keeps the full ginger character.
Non-toxic liquefied R134a gas is introduced to the milled ginger rhizome at controlled, low pressure. There is no heat, the cycle begins and stays at room temperature.
The liquid gas gently dissolves the zingiberene and the warm sesquiterpenes, while the heat-sensitive aromatic notes stay structurally intact.
The R134a is fully recovered and recycled in a closed loop. What is left is a concentrated ginger extract, at least 70% volatile oil, with under 0.1 g/kg residue.
Aromatic profile
Principal constituents identified by GC-MS, each above 1%. Zingiberene dominates the profile, supported by a family of sesquiterpenes that together give ginger its warm, woody-spicy signature.
Other extractables present, including the warming gingerol fraction. Per-batch GC-MS report available on request.
Specification
Why ginger, why cold
Zingiber officinale, India
Versus steam distillation
Applications
The extract can be taken concentrated or diluted in a carrier oil to suit the application. Typical filling rates for the concentrated extract in food are 5 to 100 mg per kilogram of product.
Why the COMERG line
The warmth above is not an accident of the root alone, it is what the right equipment makes repeatable. Our line is engineered around the things that matter when you process a high-value spice.
Why it wins
Against steam distillation, solvent and CO2, cold R134a extraction keeps more of the ginger, with a clean, warm, high-strength 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% |
| Compound recovery | up to 97% | 70-85% | 80-90% | 85-92% |
| Zingiberene | Concentrated | Retained, some loss | Retained | Mostly retained |
| Pungent fraction | Carried through | Largely lost | Carried through | Carried through |
| Solvent residue | < 0.1 g/kg | None | Needs post-purge | None |
| Energy use | 85% less vs solvent | High | Medium-high | Very high |
From rhizome to extract
A complete COMERG line takes ginger from raw rhizome to a finished extract. These are the core stages, each available as standalone equipment.
The heart of the line. Liquefied-gas systems that pull ginger oil cold, below 25 °C, from 10 l pilot units up to 2000 l.
Room temp • 97% recoveryDries the sliced rhizome to even, low moisture before milling, so each batch of ginger extracts cleanly and consistently.
Prep stageFrom a 10 l pilot system to industrial 2000 l lines, the same cold process scales with your volume.
10 l - 2000 lQuestions
A 100% natural ginger rhizome extract, product code BGin-70.1. It reaches at least 70% volatile oil, led by around 42% zingiberene, 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.
Ginger's aroma lives in zingiberene and a family of sesquiterpenes, while its heat comes from the gingerol fraction. Cold R134a extraction concentrates the aromatics cleanly and carries the warming compounds through, without the prolonged heat that can dull them.
Roughly 1 kg of extract represents around 30 to 40 kg of dried, milled ginger rhizome.
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.
It is produced with a food-grade solvent per Directive 97/60/EC. It is a raw material for formulation, not intended for direct consumption or undiluted topical use, and users are responsible for compliance with applicable legislation.
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.
Tell us your throughput and target product. We will recommend the right system, share a yield estimate for your ginger rhizome, 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 ginger line
The machines below make up the ginger line, the equipment that takes the rhizome 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

A bench-scale system that refines a finished botanical extract, selectively removing unwanted constituents at room temperature while preserving the aromatics and actives.

A stainless-steel short-path wiped film system that distills and purifies heat-sensitive botanical fractions in seconds under deep vacuum, with no thermal damage.

A compact automated filler for viscous botanical oils, with a heated mixer, jacketed feed and temperature-controlled nozzle for clean, bubble-free 0.3-3 mL doses.

A tractor-towed harvester that cuts flowering tops and stalks in a single pass, feeding a self-unloading 5 m³ bunker at up to 2 hectares per hour.

A scalable 20-1000L ethanol platform that washes botanicals with chilled food-grade ethanol and recovers the solvent in a closed loop for clean, full-spectrum extracts.

A compact benchtop GC-FID analyser with a built-in hydrogen generator and dual columns for fast, low-cost potency, aroma-profile and residual-solvent testing.

A low-pressure decontamination system that removes mold, yeast and microbial load from botanical material and extracts at room temperature, with no heat or irradiation.

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.

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.

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.
For this system. We will reply shortly.