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J Med Food. 2006 Spring;9(1):11-4.

Resveratrol and its glycon piceid are stable polyphenols.

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  • 1Interpharma Praha, a.s., Prague, Czech Republic.

Abstract

Plant extracts containing phytopolyphenols, including resveratrol, are extensively used as nutraceutical supplements. Recent reports allege their lack of stability at ambient conditions. We have studied the stability of resveratrol and its glycon piceid in a mixture with a whole grape extract for 2 years (long-term stability) under Good Manufacturing Practice pharmaceutical protocols (at 60% humidity and 25 degrees C). The neat compounds were followed for 4 years under conditions of "accelerated stability," at 75% humidity and 40 degrees C, all in the presence of ambient air. Chromatographic analysis did not detect any instability, thus disproving the claims to the opposite. No storage precautions are necessary for these nutritional supplements.

PMID:
16579722
[PubMed - indexed for MEDLINE]
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