GLA, a highly volatile substance, is very sensitive to oxidation when exposed to the air, which means that the method by which the evening primrose oil is processed can substantially alter its biological activity as well as its stability. We have invented a unique yet gentle extraction procedure specially for evening primrose oil extraction, called Low Temperature Sub-critical Solvent Extraction. This extraction method prevents any change of the condition between extracted evening primrose oil and the original substance found in the evening primrose seed. In a word, this method can perfectly protect the natural components of evening primrose oil and make it a pure, premium quality extract.
Lots of other evening primrose oils are obtained through “cold-pressing” extraction method which requires to press the evening primrose plant seeds by high pressure. In fact, this process is exclusively suitable for materials containing between 40-50 percent oil. Otherwise, it has a negative outcome if used on materials with moderate oil percentage amount of between 20–25 percent, just like the evening primrose. Although the raw material is not heated for squeezing, but the oil from compression is at around 150°C, which is very “unhealthy”. In other words, the quality of oil obtained by this method is very poor and worsens with exposure to air. What's worse, most oils must be processed being used means, which deprived off some of its minor yet valuable components, at the same time, increase the risk of oxidation. ABC Machinery's unique extraction method maintains more than just the authenticity of the evening primrose oil. The end product, Efamol Pure Evening Primrose Oil, comes with four times as many antioxidants (such as phospholipids, vitamin E, and sterols) compared to refined and pressed alternatives.
Detailed Process of Evening Primrose Oil Extraction
Our Low Temperature Sub-critical Solvent Extraction Method adopts solvent to extract evening primrose oil under the condition of low temperature and pressure. As a result, the whole process won't cause any damages for its natural components.
| Technical Principle |
Extraction Process |
Extraction Pressure |
Extraction Temperature |
| similar substance is more likely to be dissolved by each other |
counter-current extraction |
0.3MPa -1.0MPa |
room temperature |
Technical features of our evening primrose oil extraction method
- Strong ability to against oxidization
- No thermotropy of heat-sensitive of the evening primrose oil and meal
- Less solvent consumption and solvent is recycling
- Energy-saving, less investment and can be form large scale production
Evening primrose oil market is estimated to reach up to $ 71 Million by 2019. Choose the best method for evening primrose oil extraction can better help you to take up the market share quickly.
