Ingredient Consistency of Commercially Available Polyphenol and Tocopherol Nutraceuticals

Pharmaceutics

Connie M. Remsberg¹  Renee L. Good¹ 

[1] Department of Pharmaceutical Sciences, College of Pharmacy, Washington State University, Pullman, WA 99164-6534, USA;

关键词: content analysis;    polyphenols;    nutraceuticals;    vitamin E succinate;    pterostilbene;    phloretin;    myricetin;   

DOI  :  10.3390/pharmaceutics2010050

来源: mdpi

【 摘 要 】

Label claims of vitamin E succinate and polyphenolic nutraceuticals are assessed. A validated HPLC method was utilized to assess vitamin E succinate products. Three novel LC/MS methods were used to assess the polyphenols, pterostilbene, phloretin, and myricetin, in dietary supplements. The amount of vitamin E succinate varied from 0-130% of the stated label content with two products containing vitamin E acetate rather than vitamin E succinate. Expected polyphenols were found in 7 of the 8 supplement products. None of the polyphenol supplements contained content within 100-120% of label claims. The present study indicates a lack of uniformity in nutraceutical products.

【 授权许可】

CC BY   
© 2010 by the authors; licensee Molecular Diversity Preservation International, Basel, Switzerland.