Friday, January 13, 2012

Is Resveratrol stable after exposure to air?

The question of whether the polyphenol Resveratrol will readily oxidize when exposed to air has been addressed scientifically. At the time of this relevant study (Prokop J, Abrman P, Seligson AL, Sovak M. Resveratrol and its glycon piceid are stable polyphenols. J Med Food. 2006 Spring;9(1):11-4. PubMed PMID: 16579722.), there were no published studies suggesting that Resveratrol was unstable, despite contrary claims being made by some. This study solidly confirmed Resveratrol's long-term stability under ambient handling and storage conditions for at least 4 years, as well as being stable for years even under more extreme "accelerated" storage conditions.

I can confidently report at this time that Resveratrol does not deteriorate when exposed to air and therefore does not require any special manufacturing processes that exclude oxygen. This has been confirmed by both this independent study published in a peer-reviewed journal and by stability studies performed on Resveratrol finished products by qualified scientists. Despite the assertion that Resveratrol requires special handling in oxygen-free conditions, we have seen no published data to support that claim.