This is an interesting topic because there are lots of claims circulating about heat being used during purification, or not. There are several methods that can be used to extract and purify omega-3 fatty acids from fish oils. Even when purification happens at a low temperature, what many companies are not being quite honest about is that all fish oils derive from crude fish oils. These crude oils must be heat treated to remove biological organisms within fish to be safe for human consumption; the process also separates the omega fats from other fractions. Whilst some companies do promote the fact that no heat is used during purification (such as with supercritical extraction), it is really quite misleading to imply that no heat at all is applied to the oil, ever.
At Igennus we use a mixture of different raw materials, with some oils being sourced from suppliers that do use some heat during molecular distillation, and some that do not, as per supercritical extraction. Regardless, both types of oil will have been sourced from crude oil which is always heat treated before purification. Despite the different steps involved in molecular distillation versus supercritical extraction, the final oil at a given specification (for example 80% EPA & DHA) is exactly the same in terms of quality and purity, with no chemical residues. Our Pure Essentials Omega-3 products are purified using supercritical extraction, which is a low-temperature, hexane-free purification method. No saturated fats are added.
← Is the purification process of your fish oils done at a low temperature with no use of chemical solvents like hexane and no saturated fat as filler?