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Analytical Methods for Dietary Supplements
Analytical methods program area focuses on the development and validation of analytical methods that can be used to verify dietary ingredient and label content claims, as tools to meet dietary supplement current good manufacturing practice requirements, and to determine the amounts of constituents of dietary supplements. Current method development efforts favor methods for analytes with high potential public health significance.
Method development
- The AMRM Program aims to promote analytical method development in prioritized areas to address current knowledge gaps. Funded projects have focused on the development of non-targeted methods for botanical classification and authentication, and targeted methods to identify and quantify adulterants, natural toxins, pesticides and toxic elements.
Method validation
- From 2013 to 2018 community-driven method validation activities were coordinated by AOAC International through a panel funded through a contract from ODS. Information about the AOAC Stakeholder Panel on Dietary Supplements, including the resulting analytical method publications, is available on the AOAC website.
- AOAC International has published guidelines for performing a single laboratory validation study for quantitive chemical methods for dietary supplements and guidelines for the validation of methods to identify botanical dietary supplements in the 2013 edition of the AOAC Official Methods of Analysis, Appendix K: Guidelines for Dietary Supplements and Botanicals.
- NIH Administrative Supplement funding awards for single laboratory validation of quantitative analytical methods: In an attempt to leverage basic biomedical research already supported by NIH and to capture and validate new methods when first developed, AMRM makes available competitive administrative supplement funding to certain active NIH awards via PA 20-252.
AMRM Supported AOAC International methods of analysis for dietary ingredients and supplements
AOAC guidelines for dietary supplement and botanical method validation
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Method Type
Analyte(s) in raw materials, dietary ingredients, and supplements
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Quantitative
Ephedra alkaloids
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Quantitative
Glucosamine
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Quantitative
β-carotene
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Quantitative
flavonol aglycones from Ginkgo biloba
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Quantitative
Campesterol, stigmasterol, and β-sitosterol from Serenoa repens (saw palmetto)
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Quantitative
Aristolochic acid
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Quantitative
Aflatoxins B1, B2, G1 and G2 and ochratoxin A in ginseng and ginger
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Quantitative
Total soy isoflavones
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Quantitative
Hydrastine and berberine from Hydrastis canadensis (goldenseal)
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Quantitative
Coenzyme Q10
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Quantitative
Aconitum alkaloids
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Quantitative
Lycopene
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Quantitative
Total chondroitin sulfate
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Identification
Phosphodiesterase Type 5 (PDE5) inhibitors
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Quantitative
Withanolides from Withania somnifera (ashwagandha)
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Quantitative
Aloin A, aloin B, and aloe-emodin
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Quantitative
Theanine from Camellia sinensis (tea)
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Quantitative
Curcuminoids from Curcuma longa (turmeric)
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Identification
Protein from milk
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Identification
Protein from pea, rice, and soy
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Quantitative
Mitragynine, 7-hydroxymitragynine, alkaloids from Mitragyna speciosa (kratom)
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Quantitative
Gingerols and shogaols from Zingiber officinales (ginger)
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Quantitative
Total Phenolic content
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Quantitative
Phenolic compounds from Echinacea
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Quantitative
Ginsenosides in Panax ginseng and Panax quinquefolius
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Quantitative
Aloe vera polysaccharides
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Quantitative
A Type Proanthocynaidins from cranberry
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Quantitative
Select kavalactones and flavokavains in kava
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Quantitative
Vitamin B12