Spices Oleoresin Extraction Plants

Ginger Extraction Plant

Mechotech designs and manufactures turnkey ginger extraction plants, engineered and built at our Hyderabad, India works. Ginger gives four distinct products and the catalogue lists a plant for each: ginger oleoresin by solvent extraction, a gingerol-standardised extract, a steam-distilled essential oil, and a CO2 oil. This page is for spice, nutraceutical and flavour manufacturers who need to decide which ginger route fits the product they want to sell before a plant is specified.

All four routes start from dried ginger rhizome that is cleaned and size-reduced. The oleoresin plant uses closed jacketed SS 316L extractors, pressure leaf filtration, a multi-effect vacuum evaporator and a dedicated aroma-recovery unit. The gingerol-extract plant uses alcohol or hydro-alcoholic extraction, a filter press, a falling-film / vacuum evaporator and a spray or vacuum dryer. The oil plants use either an SS 316L still with multi-tube condenser and Florentine flask, or a high-pressure CO2 unit with CO2 recovery. The design is GMP-oriented and hygienic, with documentation to support the customer's own qualification. Final configuration depends on raw material, process requirement, capacity and engineering review.

Technical Specifications

Plant Type	Ginger extraction plant: oleoresin, gingerol extract, steam-distilled oil or CO2 oil, by route
Botanical / Feedstock	Zingiber officinale, dried rhizome (typically 8-10% moisture on the oleoresin page)
Oleoresin Route	Food-grade solvent extraction in closed jacketed SS 316L extractors; multi-effect vacuum evaporator with dedicated aroma recovery; standardised to customer specification for gingerol, shogaol, volatile oil and viscosity
Gingerol Extract Route	Alcohol / hydro-alcoholic extraction; configurable range listed on the product page: 2.5% to 60% Total Gingerols by HPLC; powder or liquid concentrate (5 candidate technologies screened)
Oil by Distillation	Steam distillation of dried rhizome (hydro, vacuum or pressure modes can be evaluated); sesquiterpene-rich oil without the non-volatile gingerols and shogaols
CO2 Oil Route	Supercritical CO2 extraction in SS 316L high-pressure vessels with CO2 recompression and recirculation; ethanol modifier can be evaluated
Filtration	Pressure leaf filtration with polishing filters, or plate-and-frame filter press with cartridge polish filters, by route
Drying	Spray dryer or vacuum tray dryer on the gingerol extract route; not applicable to oleoresin, which is a viscous concentrate
Product-contact Material	SS 316L, electropolished, CIP-cleanable
Automation	PLC-SCADA with recipe-based batch control, traceability and production reporting on the extraction routes
Utilities	Steam, chilled/cooling water, compressed air, nitrogen, power (project-specific)
Plant Capacity	Configured to requirement; the reference project in the case study processes 20 MT/day of dried ginger rhizomes

Manufacturing Process

Raw Material Cleaning & Size Reduction

Dried ginger rhizome is authenticated, tested for moisture, cleaned and milled to a particle size that is sized for efficient extraction, with conditions set to help protect gingerols, shogaols and volatile oil.

Solvent Extraction

Ground ginger is extracted with a food-grade solvent (ethanol / hydro-alcoholic on the gingerol route) in closed jacketed SS 316L vessels at controlled, moderate temperature over multiple cycles.

Filtration

The extract (miscella) is clarified through pressure leaf filtration or a plate-and-frame filter press, followed by polishing or cartridge filters, to remove fibre and spent marc.

Vacuum Concentration & Solvent Recovery

The clarified extract is concentrated under reduced pressure to minimise thermal degradation, with solvent condensed, purified and recycled in a closed loop.

Aroma Recovery (Oleoresin Route)

A dedicated aroma-recovery section captures the volatile compounds that carry ginger's flavour and fragrance, which are reintroduced to the finished oleoresin.

Standardisation

Oleoresin is standardised for gingerol, shogaol, volatile oil, viscosity, moisture and residual-solvent limits. The gingerol extract is assayed by HPLC for total gingerols and adjusted to the declared specification.

Drying (Gingerol Extract Route)

The standardised gingerol extract is spray- or vacuum-dried into a free-flowing powder ready for encapsulation and blending, or supplied as a liquid concentrate.

Alternative Oil Routes: Steam Distillation or CO2

For an oil instead of an oleoresin, rhizome is steam-distilled on an extended run with a generously sized condenser and Florentine flask, or extracted with supercritical CO2 and the CO2 recovered and recirculated.

Quality Control & Packing

Each batch is released after assay or GC-MS profiling, residual-solvent, heavy-metal, microbial and moisture testing as the route requires, with certificate-of-analysis documentation.

Major Plant Equipment

Raw material cleaning and inspection system
Hammer mill / pulveriser
Stainless-steel jacketed extraction vessels (SS 316L)
Solvent storage tanks and transfer pumps
Pressure leaf filters, plate-and-frame filter press and cartridge polish filters
Multi-effect vacuum evaporator or falling-film / vacuum evaporator
Aroma recovery system
Closed-loop solvent recovery unit with condensers
Spray dryer / vacuum tray dryer
Ribbon blender (standardisation)
SS 316L distillation still, multi-tube condenser and Florentine flask (oil route)
High-pressure supercritical CO2 extraction vessel, separator and CO2 recovery system (CO2 route)
CIP (clean-in-place) system
PLC-SCADA automation panel, electrical MCC and instrumentation

Plant Output

Ginger oleoresin, with essential oil and gingerol-rich extract as co-productsStandardised gingerol extract powder (configurable range listed on the product page, 2.5% to 60% Total Gingerols by HPLC)Liquid gingerol concentrateGinger essential oil by steam distillation, with aromatic hydrosol as co-productGinger oil as a CO2 extract

Case Study

Ginger Oleoresin Extraction Plant

See how this plant was engineered and delivered for a real project.

Applications

Pharmaceutical standardised ginger ingredient supply
Nutraceutical capsule, tablet and joint or digestive-health supplement manufacturing
Food, flavour and beverage applications, including ginger ale, ginger beer and confectionery
Fragrance applications and aromatherapy blends
Cosmetic and personal care active ingredients
Ayurvedic and traditional medicine preparations

Key Features

Four Ginger Routes, Each Distinct
Oleoresin, gingerol extract, distilled oil and CO2 oil have separate catalogue pages, because gingerols and shogaols are non-volatile while the oil carries the sesquiterpene fraction.
Dedicated Aroma Recovery
On the oleoresin route, a dedicated aroma-recovery unit captures ginger's volatile flavour and fragrance compounds for reintroduction.
Low-Temperature Processing
Vacuum concentration and controlled-temperature extraction limit dehydration of gingerols to shogaols, to protect pungency and aroma.
Extended Sesquiterpene Distillation
The oil plant is designed for the longer run and extra condenser area that ginger's heavier sesquiterpene fraction needs.
Closed-Loop Solvent Recovery
Integrated recovery returns solvent for reuse within the process; recovery performance is established during process development.

Frequently Asked Questions

Should I make ginger oleoresin, gingerol extract or ginger oil?

Choose by the product you sell. Ginger oleoresin is the whole-spice solvent extract, with essential oil and a gingerol-rich fraction as co-products. A gingerol-standardised extract is an assay-verified powder for nutraceuticals. Distilled ginger oil carries the aroma without the pungent gingerols, and a CO2 ginger oil is the supercritical alternative. They need different plants, so confirm the target product first.

Why does distilled ginger oil not contain gingerols?

Gingerols and shogaols, the compounds behind ginger's pungency, are non-volatile, so steam distillation does not carry them over. Distilled ginger oil is rich in sesquiterpene hydrocarbons such as zingiberene, ar-curcumene and beta-sesquiphellandrene, giving an aromatic, warming, spicy-woody profile. If pungency or gingerol content is the target, the oleoresin or gingerol-extract route is the right one.

What gingerol range can the extract plant be configured for?

The ginger extract page lists a configurable range from 2.5% up to 60% Total Gingerols by HPLC, with powder or liquid concentrate as the finished form. That is a range listed on the product page, not a delivered guarantee. The grade you target, the assay method and the extraction technology are agreed during process development and pilot validation against your own raw material.

What ginger raw material do you need to know about?

The catalogue pages are written around dried ginger rhizome, typically at 8-10% moisture on the oleoresin page, and a fresh-ginger drying line is not described on them. Tell us the form (whole, sliced or ground), moisture, volume and the target product. For the oil route, the exact feed form, dried slices or ground, is confirmed with you, and an integrated grinding system can be supplied as an option.

Can ginger be extracted with CO2 instead of solvent?

The catalogue lists supercritical CO2 extraction of ginger rhizome as a route to ginger oil and gingerols, using high-pressure SS 316L vessels with CO2 recompression and recirculation, and an ethanol modifier can be evaluated where polar fractions are needed. Pressure and temperature are set during process development. Details are on the ginger oil CO2 page.

What does the ginger reference case study show?

The Ginger Oleoresin Extraction Plant case study describes a turnkey plant for dried ginger rhizomes at 20 tonnes per day. It is a reference project, not a catalogue size. Capacity for your plant is configured to your raw-material supply, confirmed buyer volume and engineering review. The oleoresin route is related to, but not the same as, the gingerol-extract route, so treat the case study as a reference for scope rather than a specification.

Can the ginger extract be spray dried?

Yes on the gingerol-extract route. The standardised extract is spray- or vacuum-dried into a free-flowing powder ready for encapsulation and blending, after low-temperature vacuum concentration to protect pungency. The oleoresin route is different: it is standardised as a viscous concentrate, so drying is not applicable. The spray dryer page covers the dryer in more detail.

What should I send to request a ginger plant proposal, and can I trial first?

Send the rhizome form and moisture, volume, the product you want (oleoresin, gingerol extract, oil or CO2 oil), the gingerol, shogaol or volatile-oil specification, solvent preference, automation level and site utilities. Raw-material feasibility trials can be discussed through the Process Development Centre. You can then request a proposal; the plant is configured to requirement after engineering review.

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Ginger Extraction Plant