o:2677 Chemical Composition and Antioxidant Activity of Artemisia argyi Essential Oil and Hydrolate en Artemisia argyi, Chinese mugwort, is a plant widely used in China for various purposes from traditional medicine to food. The plant is less known in Europe. From plants grown in Austria, essential oils and their respective hydrolates were obtained, and their compositions were studied. Oxidized monoterpenes 1,8-cineole (32–42%), camphor (12–14%), and borneol (10–12%) were the main components present in both the essential oils and hydrolates. The essential oils also contained 6.6–10.5% monoterpene hydrocarbons such as β-caroyphyllene, camphene, and p-cymene. The hydrolate volatile fractions were devoid of hydrocarbons because of the low solubility of these compounds in water. Neointermedeol (selin-11-en-4-α-ol), a rather rare compound, and caryophyllene oxide were the major oxidized sesquiterpenes in the essential oils and were also present in low levels in the hydrolate volatiles. Furthermore, small amounts of eugenol were in the hydrolate volatiles. The essential oils and hydrolates showed some antioxidant activities in the DPPH and FRAP assays. Essential oils diluted 1:100 corresponded to gallic acid equivalents of 212–274 µg/mL in the FRAP assay and 26.1–30.7 µg/mL in the DPPH assay, while the ranges of activity for the hydrolates corresponded to gallic acid equivalents of 109–597 and 10.5–31.7 µg/mL for FRAP and DPPH assays, respectively. Chinese mugwort; essential oil composition; hydrolate volatiles; 1,8-cineole; camphor 1552099 10.3390/compounds3030037 2024-03-05T09:25:02.840Z 44 yes 46 Remigius Chizzola University of Veterinary Medicine Vienna 0000-0003-2655-5445 Doris Gansinger University of Veterinary Medicine Vienna person application/pdf 636046 https://phaidra.vetmeduni.ac.at/o:2677 no yes 16 70 1552253 Compounds 11 3 3 521 531 MDPI 2023