Sesame cooking oil making machine

Sesame Cooking Oil Making Process

The sesame oil extraction process involves several stages to ensure the efficient extraction of high-quality oil. Below is the typical process flow:

1. Seed Cleaning and Preparation
Before extraction, sesame seeds need to be cleaned to remove impurities, dirt, stones, and damaged seeds. Cleaning is essential to ensure that the final oil product is pure and free from contaminants.

2. Drying (If Required)
For optimal oil yield, the sesame seeds may be dried to reduce their moisture content. The moisture content of seeds can affect the extraction efficiency, so ensuring they are dry enough is crucial.

3. Roasting (Optional for Hot Pressing)
In the case of hot pressing or refining, the sesame seeds may be roasted at a controlled temperature. Roasting enhances the flavor and aroma of the sesame oil but can lead to a slight reduction in nutritional content. Roasting can be done at temperatures between 150°C to 180°C for 15-30 minutes, depending on the desired flavor.

4. Oil Extraction Methods
- Cold Pressing (Expeller Pressing):
- The sesame seeds are mechanically pressed at low temperatures (below 50°C). Cold-pressed oil retains most of its natural nutrients, including antioxidants, vitamins, and flavor, and is typically used for high-end culinary or medicinal purposes.
- Advantages: Retains maximum nutrients and flavor, produces pure, unrefined oil.
- Disadvantages: Lower oil yield compared to hot pressing.

- Hot Pressing:
- The seeds are heated before being fed into the press. The heat helps to release the oil more efficiently and increases the yield. However, some nutrients and antioxidants may be lost during this process.
- Advantages: Higher oil yield, better suited for larger-scale production.
- Disadvantages: Potential nutrient loss due to heat.

5. Oil Filtration
Once the oil is extracted, it often contains suspended solids or impurities. A filtration system is used to remove these impurities and ensure the oil is clear and pure. For high-quality oil, filtration may involve multi-stage processes, including mechanical filters and fine mesh filters.

6. Refining (Optional)
Refining processes such as degumming, deacidification, decolorization, and deodorization can be used to further purify the oil, removing any residual impurities and improving the oil’s shelf life, color, and aroma. This process is more common for hot-pressed oil and commercial-grade sesame oil.

7. Packaging
Once the oil is filtered and refined (if necessary), it is packaged into bottles or containers for distribution. Packaging materials should be airtight and light-resistant to prevent degradation of the oil. Cold-pressed oils are often packaged in dark glass bottles to preserve their freshness and quality.