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Spices Oleoresin Extraction Plants
Essential Oils, Spices & Oleoresins

Spices Oleoresin Extraction Plants

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Stainless-steel batch solvent extractors with conical bases and piping in a turmeric extract plant

Spices Oleoresin Extraction Plants

An oleoresin plant makes sense when a spice grower or processor wants to sell concentrated flavour, pungency or colour instead of whole or milled spice. The first decisions are the spice and how it is supplied, the oleoresin quality the buyer will pay for, which solvent or water route is acceptable, and whether the site can handle a flammable solvent. Spice variety, harvest season and moisture then decide most of the extraction design, and the plant is built in SS 316L.

The same backbone serves each spice: cleaning and milling, extraction, filtration, vacuum concentration with solvent recovery, standardising and drying. A spice changes the particle size, the solvent, the time and temperature and the point of standardisation, but not the layout of the train. Wetted parts are SS 316L and the controls are automated. Solvent recovery is a large part of the economics, because the solvent is reused rather than bought again for every batch.

Indicative Capacity Range

  • 100–5,000 kg feed/day

Key Specification Inputs

Extraction solvent/water, extraction stages, batch time, filtration and recovery.

Typical Process Route

1

Cleaning and milling

The spice is cleaned and ground to an even particle size so the solvent reaches the oleoresin-bearing tissue. Fine dust must be controlled during this step, because a dust cloud of combustible material can explode.

2

Solvent extraction

Milled spice is extracted with a food-grade solvent in closed, jacketed SS 316L extractors. Temperature is held under control and the spice is extracted in several cycles to recover the oleoresin as fully as practical.

3

Filtration

The miscella is passed through a filter system that takes out fines and fibrous matter before it goes to the evaporator.

4

Vacuum concentration and recovery

A vacuum concentrator removes solvent at a lower temperature, which limits heat damage such as darkening of colour and cooked notes. Some volatile aroma can still be lost on evaporation, so aroma recovery is worth discussing for delicate spices. Solvent is condensed and returned for reuse.

5

Purification and standardisation

The concentrate is purified as needed and adjusted to the declared specification for that spice, such as its pungency, colour or volatile-oil content as agreed with the buyer.

6

Drying, packing and release

The oleoresin is brought to the required consistency and packed hygienically. Oleoresins are often viscous liquids or pastes, so a drying stage applies where a powder is to be sold. Release follows quality testing.

Major Plant Equipment

  • Spice cleaning and destoning line
  • Mill or grinder with dust collection
  • Jacketed SS 316L extractors
  • Filter press or polish filter for the miscella
  • Vacuum concentrator
  • Condenser and closed solvent recovery loop
  • Purification and standardising vessel
  • Dryer, where a powder is to be sold
  • Solvent storage in a ventilated, explosion-protected area
  • Clean-in-place (CIP) skid
  • PLC and SCADA panel, electrical MCC and instruments

Plant Output

Standardised spice oleoresin (viscous liquid or paste)Oleoresin dried or carried onto a powder, where requiredRecovered solvent, returned to the extractorsSpent spice material

Applications

  • Seasoning and flavour blends for snacks, sauces and meat products
  • Standardised pungency from chilli, ginger and pepper oleoresins
  • Natural colour from paprika and turmeric oleoresins
  • Nutraceutical and supplement formulations
  • Cosmetic and personal-care ingredients
  • Fragrance applications

Key Features

  • Hygienic stainless-steel build

    Electropolished SS 316L extractors and tanks, with clean-in-place washing between batches.

  • Vacuum concentration with recovery

    Low-temperature evaporation limits heat damage to colour and flavour, while the recovery circuit returns solvent.

  • Fines and fibre removed

    A filtration stage, typically a filter press, clears the miscella ahead of concentration.

  • Recorded control

    PLC and SCADA automation control temperature, pressure, solvent flow, vacuum and agitation and record each batch.

  • Matched finishing

    Finishing equipment matched to the product form, with a dryer where a powder is wanted, gives a standardised, hygienically packed product ready for dosing and blending.

Country Pages for Spices Oleoresin Extraction Plants

This product is listed on the pages of the countries below, each with its own enquiry route. Where Kadali has no office in a country, enquiries are handled from the Accra office.

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Frequently Asked Questions

What is an oleoresin, and how is it made from a spice?
An oleoresin is a concentrated solvent extract of a spice that holds both the volatile aromatic oil and the non-volatile flavour, colour and pungency compounds; ginger oleoresin, for example, contains essential oil together with gingerols. It is usually a viscous liquid or paste. The spice is milled and extracted, the extract is filtered and concentrated with the solvent recovered, and the result is standardised to a specification. The sequence is the same for most spices.
What should I decide before asking for a spice oleoresin plant?
Decide the spice and whether it arrives fresh or dried, the annual supply you can secure, the oleoresin attribute your buyer pays for (for example pungency, colour or volatile-oil content), the solvent or water route, the volume per day or batch and whether the site can accommodate a flammable solvent. Ask for the harvest pattern to be considered too, since many spices are available only for part of the year.
How does oleoresin differ from essential oil?
Essential oil is only the volatile fraction, recovered by distillation. Oleoresin is a wider extract that also includes non-volatile compounds, giving a fuller flavour and colour profile. If you need the volatile oil alone, see the essential oil distillation plant.
How do turmeric oleoresin and curcumin differ?
Turmeric oleoresin is a broad solvent extract of the rhizome, used mainly for colour and flavour. Curcumin is the purified curcuminoid fraction, sold on a curcuminoid assay (for example as 95% curcuminoid powder) for uses that need pharmaceutical or nutraceutical purity. For that target, see the curcumin extraction plant or the turmeric processing plants.
Which spices are commonly extracted?
Black pepper, ginger, chilli or capsicum, cardamom, cassia and cinnamon, clove, coriander, cumin, fennel, fenugreek, garlic, mustard, nutmeg, onion and turmeric are among those with dedicated pages in the list below. The ginger processing plants page is one example.
How should spices be prepared and stored in hot, humid climates?
Dry them to a safe moisture level, keep them off the ground and out of the rain, and store them clean and ventilated. Poorly dried spices can develop mould, and mycotoxin risks, including aflatoxin and ochratoxin, are documented in spices such as cumin, capsicum, white pepper and black pepper, so storage and handling records matter. Insects, stones and soil should be removed before milling. Fine organic dust from milling can be a fire and explosion hazard and needs control.
What drives solvent and energy consumption, and how is carry-over avoided?
Solvent demand follows the solvent-to-spice ratio, the number of extraction stages and the efficiency of recovery; particle size, agitation, time and temperature also change how much is extracted. Energy mainly goes to evaporating the solvent or water from the miscella, so a dilute extract costs more. When one plant handles several spices, thorough cleaning between runs prevents flavour or colour carry-over, which is why the cleaning design is worth reviewing in a proposal.
What should I prepare for a technical proposal?
Send the spice and its form, moisture and particle size on receipt, the oleoresin specification and test method, the annual and daily volume, the solvent you wish to use, site utilities and the destination market. Related scope is described under essential oil and oleoresin solutions.
What drives the cost of an oleoresin plant?
Cost depends on the spice and its extraction difficulty, the capacity, the filtration and vacuum concentration equipment, the solvent recovery circuit, the dryer if a powder is wanted, and the level of automation. Plant setup starts from the spice, supply and capacity, and the cleaning, extraction, filtration, concentration, purification and drying train is engineered around those figures. Supply scope is set in the technical proposal, and a project-specific quotation can be prepared from your details.

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