How to Enhance Oil Yield

Beyond the inherent characteristics of the raw material, the following factors exert a decisive influence on the final oil yield:

1. Raw Material Quality: The maturity, plumpness, moisture content, and cleanliness of the seeds form the foundation.

2. Pre-treatment processes: These encompass cleaning, hulling, crushing, flaking, and steaming/roasting. For instance, steaming/roasting adjusts the moisture content and temperature of the oilseeds, disrupting cell structures, which is crucial for enhancing oil yield.

3. Pressing equipment and pressure: An efficient oil press applies sufficient pressure at an appropriate temperature to ensure the oil is fully extracted. Taking peanuts as an example, within reasonable limits, higher pressure reduces residual oil in the cake and increases oil yield.

Extraction Methods:

Hot pressing: Yields higher oil extraction rates with a more pronounced nutty flavour.

Cold pressing: Yields relatively lower oil extraction rates but better preserves the natural nutritional components and flavour of the oil.

To achieve high oil yields and superior oil quality, selecting the right machinery and mastering the techniques are key.