Xanthones

Xanthones are a class of organic compounds characterized by a distinctive tricyclic scaffold consisting of a dibenzo-γ-pyrone structure. Naturally found in plants like mangosteen (Garcinia mangostana), fungi, and lichens, xanthones are valued for their broad biological activities, including antioxidant, anti-inflammatory, antimicrobial, and anticancer properties. Their pharmacological potential makes them significant in pharmaceutical research and nutraceutical development.

Xanthones are widely studied for their therapeutic applications. They are used in dietary supplements for immune support, incorporated into skincare products for their anti-aging and anti-inflammatory effects, and investigated in drug discovery for treating chronic diseases such as cancer, diabetes, and neurodegenerative disorders. Specific xanthones like α-mangostin and γ-mangostin are among the most researched due to their potent bioactivity and safety profiles.

Xanthones are typically extracted from natural sources—most commonly the pericarp of mangosteen fruit—using solvents like ethanol or methanol, followed by techniques such as column chromatography or preparative HPLC for purification. High-purity xanthone isolates are essential for pharmaceutical and cosmetic applications, requiring strict quality control to meet regulatory standards like USP, EP, or ISO certifications.

While naturally derived xanthones are generally recognized as safe (GRAS) in moderate amounts, high doses may interact with certain medications or affect liver enzymes. Regulatory bodies like the FDA and EFSA do not approve xanthones as drugs but allow their use in supplements and cosmetics under ingredient disclosure rules. Manufacturers must adhere to regional guidelines on labeling, dosage limits, and contaminant testing to ensure consumer safety.