Fennel
Fennel
Mechotech designs and manufactures turnkey spice-oil distillation plants for fennel seed (Foeniculum vulgare). The catalogue describes fennel essential oil as dominated by trans-anethole, with fenchone and estragole as secondary constituents, giving a sweet, anise-like aroma. The oil is used in pharmaceutical digestive preparations, food and liqueur flavouring and personal care. This page covers the steam or hydro-distillation route; the solvent-extracted oleoresin route has its own page.
Mechotech’s fennel seed oil plant is configured around the seed feedstock and the target oil grade. The catalogue specifies an SS 316L jacketed still with a perforated false bottom, controlled steam injection, a shell-and-tube condenser and a Florentine flask for gravity separation. Because anethole-rich oil can crystallise in cold conditions, the condensate and collection lines are insulated. Capacity and operating parameters are established during process development and pilot validation.
Technical Specifications
| Product | Fennel Seed Oil Distillation Plant |
|---|---|
| Botanical Name | Foeniculum vulgare |
| Raw Material | Fennel seed |
| Plant Part / Feed Form | Seeds (sweet or bitter fennel; variety confirmed with the client) |
| Marker Compound | Trans-anethole, listed at 50–80% (per the Sureka Life Sciences catalogue entry for Fennel Distillation) |
| Product Category | Spices Oils Distillation Plants |
| Extraction Method | Steam or hydro-distillation — live steam through a perforated false bottom, or water added to the still |
| Product-contact Material | SS 316L |
| Condensation | Multi-tube condenser with chilled-water circulation |
| Oil–Water Separation | Stainless-steel Florentine flask |
| Finishing | Polish filtration; drying over anhydrous sodium sulphate or by vacuum |
| Automation | PLC-based |
| Plant Capacity | Configured to requirement |
| Utility Requirements | Steam, chilled/cooling water, compressed air and power (project-specific) |
| Compliance | GMP hygienic design; full documentation for qualification |
| Final Product Form | Fennel seed essential oil; aromatic hydrosol as co-product |
Plant Capacities
| Plant Scale | Raw Material Throughput | Typical Use |
|---|---|---|
| Pilot | Configured to your feedstock and trial plan | Product development, parameter validation |
| Semi-Commercial | Configured between pilot and commercial scale | Scale-up trials, contract manufacturing |
| Commercial | Configured to raw-material supply and confirmed buyer volume | Commercial production |
Capacity is configured to raw-material supply, confirmed buyer volume and investment timeline; a pilot plant is recommended to validate parameters before scaling.
Manufacturing Process
Raw Material Preparation
Fennel seed is cleaned of dust, stalks and foreign matter, and its moisture and variety (sweet or bitter) are confirmed; seed may be lightly cracked where the process development trial shows a benefit.
Loading the Still
The prepared seed is charged into the SS 316L still on a perforated false bottom that keeps the charge above the water level or steam inlet.
Steam or Hydro-Distillation
Steam is injected through the seed bed, or the still is run as a hydro-distillation with water added, to volatilise trans-anethole, fenchone and the other aromatic constituents; run time is set during process development.
Condensation
Vapours pass through a shell-and-tube condenser with chilled-water circulation, condensing the oil and hydrosol.
Insulated Oil–Water Separation
Condensate flows to a Florentine flask where the oil separates by density. The flask and collection lines are insulated, with optional trace heating, so anethole-rich oil does not crystallise in the line.
Quality Testing & Packing
Each batch is sampled for GC-MS profile, including trans-anethole, fenchone and estragole, and for physical parameters against the client’s specification before packing.
Major Plant Equipment
- Seed cleaning and sorting system
- SS 316L jacketed distillation still with perforated false bottom
- Steam generation and injection control
- Shell-and-tube condenser with chilled-water circulation
- Insulated stainless-steel Florentine flask (oil–water separator)
- Polish filtration system
- Drying unit (anhydrous sodium sulphate or vacuum)
- CIP system
- PLC-based automation and instrumentation
Plant Output
From Plant to Product
Fennel Distillation
This botanical is also in the product range of Sureka Life Sciences, our sister concern in botanical ingredients.
Applications
- Digestive-health products
- Women’s-health and infant-care preparations
- Respiratory-care products
- Flavouring (seed infusion, essential oil)
Key Features
SS 316L Construction
Product-contact surfaces are SS 316L for corrosion resistance and product purity, with CIP capability between batches.
Efficient Condensation
Multi-tube condensers with chilled-water circulation condense the volatile oil and hydrosol and limit loss of volatile top-notes.
Anti-Crystallisation Provisions
Insulated condensate lines, Florentine flask and collection vessels, with optional trace heating, protect anethole-rich oil from solidifying in cold conditions.
Configurable Distillation Mode
The still is configured for steam, hydro, vacuum or pressure distillation, selected during process development for the volatility and heat-sensitivity of the target oil.
Hydrosol Recovery
Integrated oil–water separation allows the aromatic hydrosol to be drawn off and recovered as a co-product.
Scalable Capacity
Plants are configured to requirement from pilot scale upward, with modular expansion.
Frequently Asked Questions
Does Mechotech supply the complete machinery for Fennel Seed Oil?
What specification can the Fennel Seed Oil plant achieve?
What production capacities are available for the Fennel Seed Oil plant?
Which part of fennel is processed in this plant?
How is fennel seed oil oil produced in the plant?
What is the difference between sweet fennel oil and bitter fennel oil?
Why are the oil collection lines insulated?
Does Mechotech also list a fennel oleoresin plant?
Which related plants does the catalogue list with fennel seed oil?
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