Fish oil among plant and animal extracts is rich in DHA components and obtains high-purity DHA fractions in the food and pharmaceutical industries. The purification of DHA&EPA is required, which relies on the separation of components achieved by the difference in the activity of different components under high vacuum conditions.
Purification of DHA&EPA is a type of short-path vacuum distillation, characterized by extremely low vacuum pressure. It’s considered the safest mode of separation and purifies thermally unstable molecules and related compounds with low volatility and elevated boiling point.