Cold-Pressed Black Seed Oil
Black seeds come from an ancient plant native to Southwest Asia, the Mediterranean, and North Africa. In ancient Egypt, the oil extracted from black seeds was not only used as a food ingredient but also as a beauty product for women. In addition, the active ingredients in black seeds, such as thymoquinone and unsaturated fatty acids, support the development of medicine; given these properties, the research on black seed oil is necessary. This article provides a detailed introduction to black seed oil’s extraction methods, product value, and market trends.
Extraction Method: Cold Pressing
Reasons for Choosing Cold Pressing
Experimental analysis shows that black seeds exhibit significant anti-inflammatory and antibacterial effects, while also demonstrating potential to lower blood pressure, reduce blood lipids, and improve non-alcoholic fatty liver disease. In addition, black seed oil also shows various protective effects against tumors, neurological diseases, and drug-induced toxicity.
As reported in the Chinese Journal of Modern Applied Pharmacy (a professional academic journal), the cold pressing method extracts higher levels of fatty acids, such as linoleic acid and palmitic acid, compared to other extraction techniques.
Process Flow of Cold Pressing
Under a low-temperature environment below 60°C, physical pressing equipment is used to directly apply pressure to cleaned black seeds (Nigella sativa seeds), separating the oil from the seeds. No chemical reagents are added throughout the process, and no high-temperature heating is involved. This method maximizes the retention of active substances in black seeds (Nigella sativa seeds), such as thymoquinone, vitamin E, and unsaturated fatty acids, resulting in oil with better flavor and nutritional value, and no risk of chemical residues.
Key Steps:
1. Seed Cleaning: Remove impurities (e.g., dust, broken husks) from black seeds to ensure raw material purity.
2. Seed Crushing: Use a grinder to crush black seeds into fine powder, which increases the contact area during oil pressing and improves oil extraction efficiency.
3. Low-Temperature Pressing: Use SIMEC HOP50/280 hydraulic oil press to press at low temperatures, avoiding high temperatures that damage active ingredients (such as thymoquinone and unsaturated fatty acids).
4. Filtration and Purification: Filter the crude oil obtained after pressing using a vacuum oil filter to get clear Nigella sativa seed oil.
Advantages of Cold Pressing Technology
Cold pressing is superior in “no chemical residues” and “maximized retention of active ingredients”, thus making it ideal for the production of high-end healthy edible oils and medicinal oils.
When applied to black seed oil production, the cold pressing process (35-40°C, 50 MPa) can effectively retain thymoquinone (≥3.0%) and unsaturated fatty acids (≥80%) in the final product, whose basic quality complies with the standards for high-end oils. Additionally, cold-pressed black seed oil contains approximately 1% essential oil components. These components not only impart a rich aroma to the oil but also enhance its anti-spoilage property due to their natural preservative effects.
 |  |
Core Value of Cold-Pressed Black Seed Oil
Antioxidant-Rich Composition
Black seed oil is packed with antioxidants like thymoquinone that protect cells from free radical damage. These compounds reduce inflammation and may help prevent chronic diseases including cancer and Alzheimer’s.
Potential in Treating Asthma
Studies suggest black seed oil’s anti-inflammatory properties can improve asthma control by relaxing airway muscles. Though promising, more research is needed to confirm its long-term effectiveness and safety.
Aid in Weight Loss
Black seed oil may boost metabolism and support fat burning for weight management. However, further studies are required to determine optimal dosage and mechanisms.
Benefits for Skin and Hair
The oil hydrates skin, reduces acne, and protects against damage through its antioxidant properties. It also promotes hair growth, reduces dandruff, and strengthens follicles.
Market Trends of Cold-Pressed Black Seed Oil
Black seed oil is rapidly evolving in the international market from a traditional regional product to a globally recognized premium functional food and natural health product. It has established a strong position as a high-value, scientifically-backed natural health food and premium cosmetic ingredient in the international market, with significant potential for future growth.