Sesame Oil Production Line in Saudi Arabia: Industrial Plant Solution

Investors must first define four critical variables before designing roasting, pressing, and filtration systems:

1. Product Type (Cold-pressed / Roasted hot-pressed / Refined)
2. Target Capacity (TPD)
3. Refining Line Inclusion (Whether a full refining section is required)
4. Packaging Format (Bulk oil or retail bottled oil)

Conclusion: If the goal is to produce commercially roasted oil with a distinct aroma (for the food service supply chain and traditional cuisine), the "Roasting + Pressing + Filtration" hot-pressing route offers the best cost-to-performance ratio. Cold pressing serves niche markets, while refining targets standardized mass retail.

(1) Cleaning & Magnetic Separation

• Equipment: Vibrating Screen (impurity removal), Destoner (sand/gravel removal), Magnetic Separator (metal trap).
• Engineering Logic: Cleaning enhances oil quality and protects downstream roasting and pressing equipment—metal debris can severely damage screw presses, while sand degrades hygiene ratings.
• Recommendation: Industrial designs in Saudi Arabia should prioritize automated cleaning systems with reinforced dust collection to handle local dry, sandy environments.

(2) Rinsing & Softening

• Equipment: Washing/Rinsing unit, Softening Kettle or Tank.
• Rinsing Purpose: Removes surface dust (especially fine particles attached during dry Saudi weather) and adjusts initial moisture levels.
• Softening Core: Regulates moisture and temperature (typically within 50–70°C) to increase seed plasticity, making seeds easier to roast and press uniformly.
• Notice: Parameters (temperature, time, added moisture) must be calibrated based on sesame variety (white vs. black), initial moisture, and equipment configuration. Higher initial moisture permits shorter softening times.

(3) Roasting — The Heart of Aroma Generation

• Equipment Selection:
  • Batch Rotary Roaster: Suitable for smaller capacities (<30 TPD), offers flexible flavor control.
  • Continuous Roaster: The primary choice for 50+ TPD projects due to high thermal efficiency.
• Core Functions: Develops typical sesame aroma via Maillard reaction and biochemical processes; alters cellular structure, rupturing cell walls for easier oil extraction; improves pressing performance and lowers residual oil content in press cake; adjusts seed moisture, influencing final oil color and flavor profile.
• Critical Parameter Control:
  • Moisture: 1%–3% post-roasting (too low reduces yield; too high weakens aroma).
  • Temperature: 150–200°C, optimized according to seed variety and roaster design to prevent localized charring or carcinogenic compounds.

Engineering Tip: Roasting parameters are not fixed; they must be fine-tuned via material trials. High-temperature, short-time roasting enhances aroma, but over-charring leads to bitterness. Installing temperature sensors and automatic control systems is essential for uniform roasting.

Conclusion & Parameters: For a modern industrial sesame oil production line in Saudi Arabia (30+ TPD), a Screw Oil Press is strongly recommended. It integrates seamlessly with pre-treatment and filtration lines.

Note: Pressing temperature in the barrel generally reaches 100–120°C, and dry cake residual oil content averages 6%–8%. Pilot testing of raw seeds before full equipment sizing is advised.

Recommended Combination: Industrial projects in Saudi Arabia should utilize settling tanks for initial heavy solid removal, followed by plate-and-frame or pressure leaf filters for fine polishing. While roasted sesame oil tolerates slight haze, commercial retail products require fine filtration to remove all visible solids.

Regional Consideration: For products distributed in ultra-high ambient temperature regions (e.g., Mecca/Makkah), light degumming enhances oxidation stability during prolonged storage.

1. Raw Material Strategy

Establish a dual supply model balancing local Jazan seeds with imported sources (India/Sudan) to guarantee year-round operational stability.

2. Extreme Heat Management (Summer Temps >50°C)

• Seed Storage: Warehouses must have HVAC or forced ventilation to prevent raw seed spoilage and thermal oxidation.
• Finished Oil Storage: Oil tanks require thermal insulation coatings and nitrogen blanketing systems to prevent rancidity.
• Equipment Cooling: Presses and roasters generate heavy internal heat and require reinforced water-cooling or forced air-cooling loops.

3. Hygiene & Utilities

All food-contact surfaces must use SS304/SS316 stainless steel complying with SFDA (Saudi Food and Drug Authority) and GMP/HACCP guidelines. Install backup diesel generators; use desalinated/purified water for seed rinsing; fit pulse-jet bag dust collectors in cleaning areas; route wash wastewater through oil-water separators.

Q1: How is the actual oil yield calculated for sesame pressing in Saudi Arabia, and what dictates efficiency?

A: Raw sesame seeds generally contain 45%–55% oil. Utilizing roasted screw pressing, press cake residual oil content is held around 6%–8%. Based on seeds with 50% oil content, the net dry seed yield is roughly 42%–44%. Yield efficiency depends heavily on post-roasting moisture adjustment (1%–3%) and barrel pressure control—excess moisture causes slippage, while insufficient moisture drastically increases press torque and energy usage.

Q2: What are the key SFDA quality compliance standards for locally produced sesame oil in Saudi Arabia?

A: The Saudi Food and Drug Authority (SFDA) enforces strict limits on Acid Value (AV), Peroxide Value (PV), heavy metal residues, and Aflatoxins. Plants must install optical color sorters and destoners during pre-treatment to eliminate moldy seeds (preventing aflatoxin risks) and use nitrogen blanketing during storage to keep Peroxide Values well within legal thresholds.

Q3: How do you prevent oxidative rancidity and extend shelf life in Saudi Arabia's high-ambient-temperature environment?

A: While roasted sesame oil contains natural antioxidants like Sesamol, extreme heat accelerates degradation. Shelf life is maintained through three key engineering steps: ① Rapidly cooling crude oil post-pressing via plate heat exchangers; ② Storing polished oil in insulated storage tanks with Nitrogen Blanketing; ③ Implementing nitrogen purging during bottle capping to reduce headspace oxygen below 1%.

Q4: Does press cake (Sesame Cake) have commercial value in the Saudi market?

A: Yes, substantial value. Expeller sesame cake contains 35%–45% crude protein with an excellent amino acid profile. It is a highly sought-after premium protein feed ingredient for camels, cattle, sheep, and poultry across Saudi Arabia and the GCC region. The cake can be pelleted and sold directly to regional feed mills, generating a steady secondary revenue stream for the plant.