In the competitive global market for premium edible oils, sesame oil producers are under increasing pressure to deliver consistent quality, higher yield, and sustainable processes. One of the most effective strategies? Mastering solvent extraction and multi-stage refining—especially the proven "Six-Step De-oiling" process.
Modern sesame oil production relies on a precise sequence of equipment: extractor, evaporator, desolventizer, and refining units. Each plays a critical role:
When combined with advanced refining steps like degumming, neutralization, bleaching, and deodorization, this system boosts final oil purity by up to 25% compared to traditional cold pressing alone.
| Step | Purpose | Key Optimization Tip |
|---|---|---|
| Pre-treatment | Remove impurities, moisture | Control seed moisture below 8% |
| Solvent Extraction | Maximize oil recovery | Optimize solvent-to-seed ratio (1:1.5) |
| Wet Meal Processing | Recover solvent efficiently | Maintain evaporation temp at 65°C |
| Refining Steps | Remove free fatty acids, pigments | Use activated clay for bleaching |
| Deodorization | Eliminate off-flavors | Vacuum at 0.5 mmHg, temp 220°C |
| Final Filtration | Ensure clarity and shelf stability | Use membrane filters (0.2 µm pore size) |
These steps aren’t just technical—they’re what make your product stand out in markets like Europe and North America where consumers demand clean labels and traceable sourcing.
Smart operators know that solvent recovery isn’t optional—it’s essential. With modern systems, over 98% of hexane can be recovered and reused, reducing raw material costs by up to 15%. Plus, closed-loop designs cut emissions significantly—important for meeting EU FSSC 22000 and ISO 14001 standards.
One Chinese manufacturer reported a 30% drop in operating costs after upgrading their desolventizer and installing real-time solvent monitoring sensors—a move that also reduced downtime by 22%.
Q: Why is my oil still cloudy after refining?
A: Likely due to incomplete filtration or high phospholipid content. Try adjusting degumming pH to 4.2–4.5 and adding a secondary filter stage.
Q: How do I improve extraction yield without increasing solvent usage?
A: Optimize seed particle size (0.5–1 mm) and reduce extraction time from 90 min to 60 min—many plants see no yield loss but better throughput.
This kind of practical insight helps bridge the gap between theory and daily operations—something decision-makers appreciate deeply.
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