Overview
Aged Ai Ye, derived from Artemisia argyi, is a perennial herb widely cultivated in China. Unlike fresh Mugwort, aged leaves (3–5 years) are prized for their concentrated bioactive compounds and smoother combustion properties, making them ideal for therapeutic applications. Historically used in Traditional Chinese Medicine (TCM), aged Ai Ye is believed to enhance 'Qi' circulation and dispel cold dampness. Modern research confirms its antimicrobial and anti-inflammatory effects, attributed to constituents like camphor, cineole, and thujone.
Physical and Chemical Properties
Aged Ai Ye exhibits a distinct aromatic odor due to volatile oils (1–2% by weight), which diminish if stored improperly. The leaves become brittle and darker with age, while their fiber content increases, improving combustion efficiency in moxibustion. Chemical analysis reveals terpenoids, flavonoids, and trace coumarins. The essential oil profile varies by region, with Hubei and Henan provinces producing high-quality variants. Solvent extraction yields a greenish-brown resin used in topical formulations.
Main Applications
In TCM, aged Ai Ye is decocted for dysmenorrhea or cold-related disorders. Its primary industrial use is in moxibustion sticks, where slow-burning leaves generate therapeutic heat. The smoke also serves as a natural insect repellent. Aromatherapy brands incorporate Mugwort oil into diffuser blends for relaxation. Emerging applications include biodegradable pesticides and veterinary products. B2B buyers often procure bulk quantities for wellness product manufacturing.
Safety and Storage
While generally safe, prolonged skin contact with essential oils may cause dermatitis. Suppliers must comply with residual pesticide limits (e.g., EU MRLs) for export-grade products. Store in woven bags or cardboard drums to prevent moisture buildup. Shelf life exceeds 5 years under optimal conditions. Label batches with harvest dates and GC-MS test results for transparency.
B2B Procurement Guide
Prioritize suppliers with GACP (Good Agricultural and Collection Practices) certification. Key metrics include oil content (>1.5%), ash content (<10%), and microbial limits. For moxibustion, select leaves aged 3–7 years—older variants may lose potency. Negotiate MOQs (Minimum Order Quantities) based on drying methods: sun-dried leaves cost less but vary in quality, while oven-dried batches offer consistency. Spot-check for foreign matter like stems or sand.
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