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    Breaking News

    Industry Collaborates on Adulterated St. John’s Wort Investigation

    Study proposes enhancements to authentication scheme.

    Industry Collaborates on Adulterated St. John’s Wort Investigation
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    09.13.16
    Notable industry experts have co-authored a study that identified adulterated St. John’s Wort products and recommended specific ways to improve testing of the popular herb.

    “St. John’s Wort versus Counterfeit St. John’s Wort: An HPTLC Study,” published in the Journal of AOAC International (Vol. 99, No. 5, 2016) was a collaborative effort by Sidney Sudberg, Alkemist Labs founder and CSO, Débora A. Frommenwiler and Eike Reich of CAMAG, Maged H.M. Sharaf of American Herbal Products Association (AHPA), Anton Bzhelyansky of United States Pharmacopeial Convention (USP) and Ben Lucas of Arizona Nutritional Supplements.

    The article can be found here.

    The study, which investigated St. John’s wort (SJW) ingredients and products suspected to be adulterated based upon a simple preliminary test, proposes enhanced authentication procedures along with a decision flowchart to systematically rule out SJW adulteration.

    One of the top-selling botanicals globally for many years, the high value of SJW makes it a target for adulteration. From a total of 37 samples of SJW herb, dry extracts, and commercial products tested in this study, approximately 38% were proven inauthentic either due to admixture of synthetic dyes combined with an uncharacteristic flavonoid pattern (approximately 22%) or by exhibiting an uncharacteristic flavonoid pattern only (approximately 16%).  None of the raw herb samples were adulterated with dyes; the latter were only found in extracts and finished products.

    “It’s common knowledge that when an herbal product is a strong seller, there will be unscrupulous vendors who try to find ways around established testing methods,” said Mr. Sudberg. “Collaboration between industry experts to strengthen analytical methods is the best way to combat this practice, and for people like us, it’s incredibly satisfying.”

    “I think this work is an excellent example illustrating the great potential of HPTLC, unlocked by standardized methodology, suitable equipment and validated methods provided by CAMAG, when it comes to analysis of highly complex and naturally variable samples such as botanicals” stated Ms. Frommenwiler.
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