Overview
Fructus Gardeniae, the dried ripe fruit of Gardenia jasminoides Ellis, is a cornerstone herb in Traditional Chinese Medicine (TCM) with a history spanning over 2,000 years. Classified as a heat-clearing and detoxifying agent, it primarily targets the heart, liver, and lung meridians. The herb is harvested in autumn when fruits turn reddish-yellow, then dried for medicinal use. Modern phytochemical studies identify geniposide, crocin, and gardenoside as its active compounds, which contribute to its anti-inflammatory, cholagogic, and hypotensive effects. In addition to TCM formulations, it’s used as a natural yellow dye in food and textiles.
Physical and Chemical Properties
Fructus Gardeniae exhibits a distinct bitter taste and cold energy, aligning with its TCM classification. The fruit’s reddish-brown appearance and wrinkled texture result from sun-drying or low-temperature baking. Its water-soluble components, including geniposide (5–10% content), are critical for bioavailability. The herb’s iridoid glycosides demonstrate stability in dry conditions but degrade under high humidity or prolonged heat. Crocin, a carotenoid pigment, provides its characteristic yellow hue and shows light sensitivity. Quality assessment often includes HPLC testing for geniposide content (≥1.8% per Chinese Pharmacopoeia standards).
Main Applications
In clinical TCM, Fructus Gardeniae treats febrile diseases, jaundice (e.g., hepatitis), and inflammatory conditions like sore throat or conjunctivitis. It’s a key ingredient in classical formulas such as Zhi Zi Chi Tang (for restlessness) and Yin Chen Hao Tang (for liver disorders). Beyond medicine, crocin extracts serve as natural colorants (E164) in beverages and confectionery. The cosmetic industry utilizes gardenia extracts for antioxidant properties in skincare products. Recent research explores its potential in neuroprotection and diabetes management.
Safety and Storage
While generally safe, excessive doses (>10g/day) may cause gastrointestinal irritation or hypotension. TCM contraindications include cold-type diarrhea or spleen deficiency syndromes. Allergic reactions are rare but possible with topical use. Proper storage requires moisture-proof packaging (below 10% humidity) and protection from light to prevent crocin degradation. Bulk buyers should inspect for mold or insect infestation periodically. Shelf life typically reaches 24 months when stored below 25°C.
B2B Procurement Guide
Reliable suppliers should provide Certificate of Analysis (CoA) detailing geniposide content, heavy metal levels (e.g., lead <5ppm), and pesticide residues (e.g., no DDT). Guangdong and Jiangxi provinces are major cultivation regions in China. For industrial use (e.g., dye extraction), mechanically peeled fruits offer higher crocin yield. Price tiers reflect grading: Grade A (whole, unbroken fruits) commands 20–30% premium over fragments. Consider quarterly purchases to mitigate seasonal price fluctuations (peak harvest: September–November).
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