Botanical Adulterants Prevention Program Publishes Ginkgo Leaf Extract Laboratory Guidance Document

by Herbalist | Aug 18, 2022 | Belfast Herbalist | 0 comments

Over the past 20 years, at least 27 publications in the peer-reviewed scientific literature have documented cases of adulteration of ginkgo leaf extract ingredients and finished consumer products. Such adulteration generally involves the addition of undeclared flavonol-rich ingredients or highly purified flavonoids (e.g., quercetin or rutin) from lower-cost sources, most commonly extracts or purified fractions of the flowers and leaves of Japanese sophora (Styphnolobium japonicum, syn. Sophora japonica). Of the 501 samples analyzed in these 27 papers, 242 (48%) were considered to be adulterated according to criteria established by the authors of each of these publications, suggesting that ginkgo leaf extract adulteration is widespread.

http://herbalgram.org/resources/botanical-adulterants-prevention-program/laboratory-guidance-documents/ginkgo-leaf-extract-laboratory-guidance-document-may-2022/

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