Gardeniae Fructus (Zhi Zi – Cape Jasmine Fruit) is a classical Traditional Chinese Medicine (TCM) herb renowned for its bitter-cold nature and powerful actions to clear heat, drain fire, eliminate irritability, promote urination, cool the blood, and calm the mind. Described in the Shennong Bencao Jing and Compendium of Materia Medica, Zhi Zi is praised as a superior remedy that “purges internal fire and soothes the Heart.” Modern pharmacological studies confirm that its bioactive compounds — geniposide, crocin, and genipin — possess anti-inflammatory, antipyretic, hepatoprotective, choleretic, antioxidant, and antitumor potentials. Clinically, it is used to treat febrile diseases, insomnia due to heat, jaundice, hepatitis, urinary tract infections, hemoptysis, skin inflammation, boils, and bleeding disorders caused by excess heat. The method of preparation determines its therapeutic direction: raw fruit clears heat, lightly stir-fried fruit drains fire, and charred fruit cools blood and stops bleeding. With its harmonizing nature that dispels pathogenic fire while protecting vital energy, Gardenia fruit exemplifies the wisdom of traditional Chinese medicine — balancing the body, calming the mind, and restoring internal peace.
HERBAL NAME: Zhi Zi (Gardenia jasminoides) – Cape Jasmine Fruit
ENGLISH NAME: Cape Jasmine Fruit
SCIENTIFIC NAME (PHARMACEUTICAL NAME): Gardenia jasminoides ellis (Gardeniae Fructus)
FAMILY: Rubiaceae (Coffee family)
STORAGE: Store in a cool and dry place.
PROPERTIES: Bitter in taste, cold in nature, non-toxic.
MERIDIAN ENTRY: Heart, Lung, Stomach, Liver, and Sanjiao (Triple Burner) meridians.
THERAPEUTIC ACTIONS (TCM FUNCTIONS)
According to Traditional Chinese Medicine, Zhi Zi clears heat and drains fire from the Heart, Lung, and Triple Burner; resolves damp-heat; cools the blood; stops bleeding; detoxifies; relieves irritability; promotes urination; and alleviates swelling and toxic syndromes.
1. Heart & Nervous System
2. Liver, Gallbladder & Digestive System
3. Urinary & Reproductive System
4. Respiratory System & ENT
5. Eyes, Skin, Muscles & Trauma
6. Immune, Anti-inflammatory & Antitumor Effects
CHEMICAL CONSTITUENTS
Alkaloids: Stepharine, N-Nornuciferine, Asmilobine.
Triterpenoids & Organic Acids: Betulinic acid, Oleanolic acid, Maslinic acid, Crategolic acid, 3-O-Trans-p-Coumaroylmaslinic acid, 3-O-Cis-p-Coumaroylmaslinic acid, Alphitolic acid.
Iridoid Glycosides (major active compounds): Gardenoside, Gardenidin, Geniposide, Genipin-1-Gentiobioside, Shanzhiside, Gardoside, Scandoside methyl ester, Deacetylaspelurosidic acid, Methyl deacetylaspelurosidate, 10-Acetylgeniposide (Lida J. et al., Chem. Pharm. Bull., 1991, 39(8):2057).
Phenolic & Chlorogenic Acid Derivatives: Chlorogenic acid, 3,4-di-O-Caffeoylquinic acid, 3-O-Caffeoyl-4-O-Sinapoylquinic acid, 3,5-di-O-Caffeoyl-4-O-(3-Hydroxy-3-Methyl)-Glutaroylquinic acid (Nishizawa M. et al., Chem. Pharm. Bull., 1988, 36(1):87).
Saponins: Zizyphus saponin, Jujuboside B.
Flavonoids & Vitamins: Rutin (3385 mg/100 g), Vitamin C (540–972 mg/100 g), Vitamin A, Vitamin B2 (Riboflavin, Thiamine, Niacin/Nicotinic acid), Carotene.
Carotenoid: Crocetin (Tan Vinh Kz, Journal of Pharmacy, 1964, 11(5): 342).
Amino Acids: Lysine, Aspartic acid, Asparagine, Proline, Valine, Leucine.
Sterols & Fatty Acids: Oleic acid, Sitosterol, Stigmasterol, Desmosterol.
Others: Tannins, Essential oil, Pectin.
Minerals: Calcium, Phosphorus, Iron.
DOSAGE & METHOD OF PREPARATION
Recommended dose: 8 – 20 g per day (in decoction).
CONTRAINDICATIONS
Contraindicated in individuals with Spleen–Stomach deficiency cold, chronic diarrhea, or without internal heat or damp-heat accumulation.
Beyond its therapeutic value, Cape Jasmine (Gardenia jasminoides J.Ellis) has ecological functions associated with fragrant flowers, fleshy fruits, and evergreen shrub habitats:
Cape Jasmine provides medicinal resources while participating in ecological interactions among flowering plants, insects, and fruit-eating animals. Maintaining natural flowering and fruiting supports these functions.
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