Family Zingiberaceae
Dilaw
Curcuma longa Linn.
Curcuma xanthorrhiza Naves
LONG TUMERIC
Yu-chin
Scientific names Common names  
Curcuma longa Linn. Angay (Pamp.)  kunik (Ibn.)
Curcuma xanthorrhiza Naves Dilaw (Tag.) Lampuyang (P. Bis.) 
  Dulaw (S.L. Bis.)  Lawag (Sub.) 
  Kalabaga (Bis.)  Luyang-dilaw (Tag.) 
  Kalawag (Mbo., Bis.) Pangar (Pamp.) 
  Kalauag (Mbo., Bis.)  Pangas (Pamp.)  
  Kinamboy (Bis.) Parak (Kuy.)
  Kinamboi (Bis.)  Salampawyan (Bag.) 
  Kulalo (Bis.) Salampauyan (Bag.)
  Kulyaw (Ilk.)  Turmeric
  Kunig (Ilk.)  Yu-chin (Chin.)
    Long tumeric (Engl.)

Botany
· Plant leafy, 1 to 1.5 m tall and with 5 to 6 leaves. Rhizomes bright yellow inside, thick and cylindric.
· Leaves: green blade oblong, 30 to 45 cm long and 10 to 15 cm wide. Petiole as long as the blade.
· Flowers: peduncle 15 cm or more in length and borne within the tuft of leaves. Spikes 10 to 20 cm in length and about 5 m in diameter. Floral bracts pale green, ovate, 3 to 4 cm long, coma bracts tinged with pink. Flowers pale yellow, as long as the bracts.
· Fruits: capsules.

Distribution
Widely distributed in the Philippines in and about towns, sometimes in open waste places and sometimes planted.

Part utilized
· Rhizome.
· Collect the whole year round. |
· Rinse, removes roots, section into pieces, steam and sun-dry.

Chemical constituents, characteristics and Pharmacological Effects
Volatile oil, 3-5% - tumerol (alcohol), d-alpha phellandrene, carvone, camphor, curcumone; fat, 3%; starch, 30%; resin; curcumin (pigment).
Pungent and bitter tasting, warming, carminative.
Improves Ch'i circulation.
Anti -contusion.
Yellow orange color comes from yellow pigment in the rhizomes called curcumin.
Believed to have antioxidant, antiinflammatory, cholesterol-lowering, and anticarcinogenic activity.
Antiinflammatory activity has been compared to topical hydrocortisone.
Antiseptic, antibacterial, antifungal.


Uses
Folkloric
· Fevers, dysentery, abdominal pain, flatulence, abdominal spasm, arthritis: Decoction of rhizome as tea.
· Menstrual irregularities
· Contusions and associated painful swelling.
· Antiseptic for wounds: Crush rhizome and apply to wounds.
· Externally, rhizomes are applied to insect bites, ringworm, bleeding.
· Dosage: Decoction of 2 to 6 gms dried material.
• In India, used as antiseptic for cuts. Used for leprosy, liver problems, swelling, insect bites, wounds, whooping cough, pimples. Sweetened milk boiled with tumeric is popular as a remedy for colds and cough.
• In Ayurveda, use as stomach and liver tonic and blood purifier.
Culinary
· Condiment and coloring for food.
• In dried or powdered form, used like ginger.
New Age
· Improves Qi (chi) circulation. Chi is the basis of traditional Eastern medicine. In chinese parlance, chi means 'spirit.' In new-age speak, good health is synonymous with free-flowing energy through meridian pathways. A blocked Qi flow is associated with disease or ill-health.
Others
Approved by German health authorities for the treatment of dyspeptic complaints.
Recent uses and preparation
Wounds and swelling
Ointment: Wash the unpeeled ginger. Chop the rhizomes to fill half a glass of water. Sauté with one glass of coconut oil on low heat for five minutes. Place in a clean bottle and label.
Antiseptic for wounds: Extract juice of the fresh rhizome and apply directly on the wound or swelling.
Gas pain in adults: Decoction from thumb-sized rhizome in a glass of water reduced to half.


Studies
Curcumin Suppresses Metastasis in a Human Breast Cancer Xenograft Model:
The dietary administration to mice of curcumin and curcumin plus Taxol significantly decreased the incidence of breast cancer metastasis to the lung. The results indicate that curcumin has a potential for breast cancer therapy.
Hepatoprotective:
The study suggests the ethanolic extract of C. longa has potent hepatoprotective effect against paracetamol-induced liver damage in rats and validates its use as a hepatoprotectant agent.
Antifungal: The study on the ethanolic extracts of Curcuma longa and Alpinia galanga exhibited excellent phytotoxic activity against Lemna minor and good antifungal activities against Trichophyton longifusus.
Antibacterial: Study showed the essential oil fraction from tumeric possesses significant antibacterial activity against pathogenic Staph aureus bacteria and suggests a potential for use of the essential oil as antiseptic in prevention and treatment of bacterial infections.
Hypoglycemic / Hypolipidemic / Antioxidant: Study of Curcuma longa and Abroma augusta found them to be efficient antioxidants and showed significant reduction in glood glucose. Study showed the combination of herbal extracts showed better efficacy compared to individual plant extracts.

Caution
• Anticoagulation Concerns:
Ginger may decrease thromboxane production and cause prolong bleeding time and platelet inhibition. Therefore, should be used with caution by patients receiving anticoagulant therapy.

Availability
Wild-crafted.
Essential oils and capsules from the cybermarket.


Additional Sources and Suggested Readings
(1)
HEPATOPROTECTIVE EFFECTS OF Curcuma longa RHIZOMES IN PARACETAMOL-INDUCED LIVER DAMAGE IN RATS / Omar, R., Ali Rahman, Z. et al /
(2)
CURCUMIN SUPPRESSES METASTASIS IN A HUMAN BREAST CANCER XENOGRAFT MODEL: ASSOCIATION WITH SUPPRESSION OF NUCLEAR FACTOR-KAPPAB, CYCLOXYGENASE-2 AND MATRIX METALLOPROTEINASE
(3)
Tumeric
(4)
Tumeric Plant / Eco India
(5)
An illustrated guide to 101 medicinal herbs: Steven Foster, 1988. Interweave Press
(6)
Biological effects of indigenous medicinal plants Curcuma longa and Alpinia galanga / Fitoterapia Vol 76, Issue 2, March 2005, Pages 254-257 / doi:10.1016/j.fitote.2004.12.012
(7)
Antibacterial activity of Curcuma longa rhizome extract on pathogenic bacteria / Rambir Singh et al / CURRENT SCIENCE, VOL. 83, NO. 6, 25 SEPTEMBER 2002
(8)
HYPOGLYCEMIC, HYPOLIPIDEMIC AND ANTIOXIDANT PROPERTIES OF COMBINATION OF CURCUMIN FROM CURCUMA LONGA, Linn, AND PARTIALLY PURIFIED PRODUCT FROM ABROMA AUGUSTA, Linn. IN STREPTOZOTOCIN INDUCED DIABETES / Halim Eshrat M. Ali Hussain / Indian Journal of Clinical Biochemistry, 2002, 17 (2) 33-43