Clove Bud Oleoresin
Clove Bud Oleoresin
Purity Levels
Eugenol 55–85% w/w
Mechotech designs and manufactures turnkey oleoresin extraction plants for Clove Buds (Syzygium aromaticum), processing the dried, unopened flower buds into an oleoresin standardised primarily on eugenol content — the phenylpropanoid that gives clove its characteristic pungent, warm aroma and accounts for the majority of the bud's essential-oil weight, one of the highest single-compound concentrations found in any common spice. Because clove bud's essential-oil yield and eugenol share are both unusually high compared with other spices, the extraction line is set up around efficient recovery of this dominant phenolic fraction, with a lower-value clove-leaf-oil (also eugenol-rich, but coarser and lower-priced) available as a complementary byproduct stream from a separate leaf-processing intake where buyers want to run both raw materials on shared infrastructure. We supply the complete machinery to process clove buds into a consistent, eugenol-standardised oleoresin for the food, flavour, dental, pharmaceutical, and fragrance industries.
Mechotech's Clove Bud oleoresin plant is engineered around eugenol as the dominant target compound: dried clove buds carry an unusually high essential-oil content, and within that oil eugenol alone typically makes up the large majority of the volatile fraction, alongside smaller amounts of eugenyl acetate and β-caryophyllene. This single-compound dominance simplifies standardisation relative to spices whose value depends on a balanced multi-terpene profile (such as cardamom), but eugenol is a reactive phenol that oxidises and discolours under heat, so concentration runs under nitrogen to preserve colour and assay. Clove-leaf oil — distilled or extracted from the tree's leaves rather than the flower bud — carries a broadly similar but lower-value eugenol profile with a coarser, harsher aromatic note, and Mechotech can configure a shared or parallel processing line for buyers who want to run both bud and leaf material through common extraction infrastructure. Built in SS 316L with electropolished product-contact surfaces, closed-loop solvent recovery, and PLC-based automation, each plant is delivered as a commissioned turnkey system engineered to the declared eugenol specification.
Technical Specifications
| Product | Clove Bud Oleoresin Extraction Plant |
|---|---|
| Botanical Name | Syzygium aromaticum |
| Raw Material | Dried, unopened clove flower buds |
| Plant Part | Flower bud (unopened) |
| Extract Type | Eugenol-rich viscous oleoresin (liquid concentrate) |
| Standardisation | Eugenol content by GC assay, 55–85% w/w typical, with eugenyl acetate and β-caryophyllene profiled as secondary markers |
| Extraction Method | Solvent percolation extraction (closed, jacketed SS 316L extractors); optional parallel line for steam-distilled clove-leaf-oil byproduct processing |
| Product-contact Material | SS 316L, electropolished, CIP-cleanable |
| Filtration System | Plate-and-frame filter press with cartridge polish filtration |
| Concentration System | Falling-film / vacuum evaporator, nitrogen-protected to limit eugenol oxidation and colour formation, with closed-loop solvent recovery |
| Drying System | Not applicable — final product is a viscous liquid oleoresin, not a dried powder |
| Automation | PLC-SCADA with recipe management, batch traceability and production reporting |
| Plant Capacity | Configured to requirement |
| Utility Requirements | Steam, chilled/cooling water, compressed air, soft water, nitrogen, power (project-specific) |
| Compliance | FSSAI, GMP, HACCP hygienic design; full documentation for qualification |
| Final Product Form | Viscous, food-grade eugenol-rich oleoresin (liquid, not powder) |
Plant Capacities
| Plant Scale | Clove Bud Throughput | Typical Use |
|---|---|---|
| Pilot | Configured to your feedstock and trial plan | Eugenol-yield validation, colour-stability trials |
| Semi-Commercial | Configured between pilot and commercial scale | Contract manufacturing, flavour-house sample runs |
| Commercial | Configured to raw-material supply and confirmed buyer volume | Export-grade continuous oleoresin production |
Capacity is configured to raw-material supply and confirmed buyer volume; we recommend a pilot plant to validate eugenol recovery and colour-stability parameters before scaling, particularly if a parallel clove-leaf-oil byproduct stream is planned.
Manufacturing Process
Raw Material Cleaning & Size Reduction
Dried clove buds are cleaned of stems and foreign matter, tested for moisture and essential-oil content, and milled to a uniform particle size to maximise solvent contact given clove's unusually high oil-cell density.
Solvent Percolation Extraction
Milled clove buds are charged into closed, jacketed SS 316L extractors and extracted with a food-grade solvent system across multiple percolation cycles to maximise recovery of eugenol, eugenyl acetate, and β-caryophyllene.
Solid-Liquid Separation & Filtration
The miscella is clarified through a plate-and-frame filter press followed by cartridge polish filters, removing bud fibre and particulate ahead of concentration.
Nitrogen-Protected Vacuum Concentration
The filtered miscella is concentrated in a falling-film / vacuum evaporator under a nitrogen blanket, since eugenol is a reactive phenol prone to oxidative discolouration at elevated temperature and prolonged air exposure.
Solvent Recovery
A closed-loop recovery system condenses and recycles the extraction solvent back into production.
Optional Clove-Leaf-Oil Byproduct Processing
Where a buyer supplies clove leaf alongside bud material, a parallel steam-distillation or extraction stream can process the leaves into a lower-value, coarser-aroma eugenol-rich oil on shared infrastructure, improving overall plant utilisation.
Standardisation
The concentrated oleoresin is assayed for eugenol content by GC, with eugenyl acetate and β-caryophyllene profiled as secondary markers, then blended to target the declared 55–85% w/w eugenol specification.
Quality Control & Filling
The finished oleoresin is polish-filtered, tested for residual solvent, heavy metals, and microbial load, and filled into lined, nitrogen-blanketed drums to preserve colour and eugenol assay through storage and export transit.
Major Plant Equipment
- Raw material cleaning system
- Hammer mill (size reduction)
- Stainless-steel percolation extraction vessels (jacketed, SS 316L)
- Solvent storage tanks
- Solvent transfer pumps
- Plate-and-frame filter press / pressure leaf filter
- Cartridge polish filters
- Nitrogen-blanketed falling-film / vacuum evaporator
- Closed-loop solvent recovery system
- Condensers & vacuum pumps
- Optional clove-leaf steam-distillation unit (byproduct line)
- Nitrogen blanketing/inerting system
- Drum-filling station
- CIP (clean-in-place) system
- PLC-SCADA control panel, electrical MCC & instrumentation
Plant Output
From Plant to Product
Clove Buds Extract
This botanical is also in the product range of Sureka Life Sciences, our sister concern in botanical ingredients.
Applications
- Food, bakery, and confectionery flavouring
- Flavour-house compounding for warm-spice and baked-goods flavours
- Dental and oral-care formulations (traditional eugenol-based preparations)
- Pharmaceutical and topical-analgesic formulations
- Fragrance formulations calling for a natural clove note
- Processed meat and pickling-spice applications
- Export to regulated-market spice-oleoresin buyers
Key Features
GMP/FSSAI Hygienic SS 316L Construction
Electropolished SS 316L product-contact surfaces use FSSAI and GMP hygienic design, with CIP operation between batches.
Nitrogen-Protected Concentration for Colour Stability
Vacuum concentration under a nitrogen blanket limits oxidative discolouration of eugenol, holding the finished oleoresin's colour and assay within specification.
High-Yield Eugenol Standardisation, 55–85%
In-process and batch-release GC assay are used to check the finished oleoresin against its declared eugenol specification, reflecting clove bud's unusually high single-compound concentration among common spices.
Closed-Loop Solvent Recovery
Integrated recovery returns the extraction solvent for reuse each batch, reducing fresh-solvent consumption.
Optional Clove-Leaf-Oil Byproduct Line
A parallel processing stream can convert lower-value clove leaf into a eugenol-rich byproduct oil on shared plant infrastructure.
Scalable Batch Capacity
Plants are configured to requirement from pilot scale upward, with modular expansion.
Frequently Asked Questions
Does Mechotech supply the complete machinery for Clove Bud oleoresin?
Why is eugenol content so high in clove bud oleoresin compared with other spices?
What is clove-leaf oil, and can Mechotech's plant also process it?
Why is nitrogen protection used during concentration?
What specification can the Clove Bud oleoresin plant achieve?
What production capacities are available for the Clove Bud oleoresin plant?
Which industries use Clove Bud oleoresin, and does the plant support FSSAI and GMP requirements?
What is the typical cost and delivery timeline for a Clove Bud oleoresin plant?
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