Written by Doug Bibus, PhD, Coromega
A recent New Zealand based study reported that a significant number of fish oil supplements were oxidized(1). Researchers in New Zealand sampled 36 brands of fish oil from around the world. Approximately 80% of these products had evidence of oxidation and only 3 products reached their reported label claim for EPA and DHA.
So what is oxidation and why should you care? Oxidation is a chemical process that breaks down polyunsaturated fatty acids like EPA and DHA and also things like metal; ie, rust! EPA and DHA are fragile molecules and are prone to breaking down in the presence of oxygen. When oxidized, EPA and DHA are converted into a number of different products that may also be bad for our health. Feeding research animals old frying oil that is highly oxidized causes change in liver function associated with poor health. Oxidation is also reported to be part of the aging process.
Many fish oil manufacturers and suppliers routinely test their oils for oxidation but the key is preventing oxygen exposure during the encapsulation period. Coromega, the company that pioneered the emulsifying process of fish oil, realized this many years ago and took drastic steps to limit oxygen exposure. All transfer lines, tanks and packaging instruments exist in a nitrogen environment. To take it one step further, Coromega packaging is a five (FIVE!!) layer film that excludes light and oxygen, protecting its fragile contents, EPA and DHA. Coromega also undergoes routine testing to ensure you are getting guaranteed amounts of EPA and DHA and a safe product.
So enjoy your Coromega, knowing you are getting the best oxidation protection.
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