This post series on botanical ingredient adulteration is inspired by the excellent work coming out of the Botanical Adulterants Prevention Program (BAPP) by the American Botanical Council (ABC), continuing today with:
❤️ Cranberry (Vaccinium macrocarpon) a fruit that is rich in organic acids, anthocyanins, flavonols, and especially A‑type proanthocyanidins (PACs).
Traditionally used as food and medicine, cranberry today is most closely associated with urinary tract health via anti‑adhesion effects on uropathogenic E. coli, with additional research in microbiome, gastric, periodontal, and cardiometabolic health tied largely to its polyphenols. Because many documented benefits align with A‑type PACs and clinical doses around 36 mg soluble PACs per day, the category has become highly “numbers‑driven,” with brands emphasizing PAC content and anti‑adhesion outcomes.
➡️ Cranberry is also a high‑value botanical: US cranberry supplements have long ranked among top single‑herb products, with North America dominating production and exports. Steep price differences between low‑PAC press‑cake materials and high‑PAC juice extracts, combined with strong demand and health positioning, create a powerful economic incentive to cut or replace authentic high‑PAC cranberry with cheaper PAC‑ or anthocyanin‑rich substitutes.
For companies, confirming identity is not optional; it’s a legal and ethical duty under cGMPs to verify that each incoming botanical is the right species, the right plant part, and meets agreed quality specs. Brands and manufacturers should be leaning on resources like the BAPP adulteration bulletins and implementing fit-for-purpose analytical methods, rather than relying on nonspecific tests that can miss plant-part adulteration.
Adulteration, in the regulatory sense, means a product is unsafe or of inferior quality because it fails to meet legal standards for purity, strength, or composition (including contamination).
Economic adulteration is emphasized in these posts: intentional substitution, dilution, or undeclared additions that misrepresent a botanical’s true identity or quality compared to what the label and consumer would reasonably expect.
For more detailed information on adulterants in botanicals, see the BAPP publications, which are freely available on their website. To see the full downloadable PDF, go to the LinkedIn Post: