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Asian rosewood
Dalbergia cochinchinensis Pierre
Hong suan zhi

Scientific names Common names
Dalbergia cochinchinensis Pierre Asian rosewood (Engl.)
  Siamese rosewood (Engl.)
  Thai rosewood (Engl.)
  Thailand rosewood (Engl.)
  Trac wood (Engl.)
Dalbergia cochinchinensis Pierre is an accepted name. The Plant List

Other vernacular names
CHINESE: Hong suan zhi, Jiao zhi huang tan.
FRENCH: Palissandre de Siam.
ITALIAN: Palissandro del Siam, Palissandro della Thailandia.
JAPANESE: Keranji, Tai rozuuddo, Torakku uddo.
THAI: Phayung.
VIETNAMESE: Trac, Trac bong, Cam lai nam, Glau ca, Ka rac, Ka nhong.

Gen info
- Dalbergia cochinchinensis is a threatened hardwood-yieldeding tree, found in Cambodia, Laos, Thailand and Vietnam. (2)
- The demand for the rosewood has led to an epidemic of illegal logging and trafficking, threatening species extinction. Conservationsts project the species could be extinct within 10 years (by 2026). (2)
- D. cochinchinensis is one of the eight hongmu species of rare and valuable "redwood" used primariy in the manufacture and trade of antique-style furniture, especially in China.(4)
- In some Asian countries, black market prices have sky-rocketed, making Siam rosewood more valuable than gold. (2)

Dalbergia cochinchinensis is a slow-growing medium-sized evergreen tree reaching a height of 35 meters, with a spherical, profusely branched crown. Trunk is up to 60 centimeters in diameter, occasionally up to 120 centimeters.  Heartwood is red or black, distinctly demarcated from the gray sapwood. Flowers are white, small, and fragratn. Pods are think and papery

- Introduced.
- Southeast Asia: Cambodia, Laos, Thailand, Vietnam.
- Threatened, mainly by commercial exploitation.

- IUCN Red List: Threatened, 2009.

-Study of heartwoord yielded fifteen flavonoids identified as: pinocembrin (1), liquiritigenin (2), galangin (3), 7-hydroxy- 6-methoxyflavone (4), naringenin (5), alpinetin (6), 2,3-dimethoxyxanthone (7), 6,4′-dihydroxy-7-methoxy-flavan (8), mucronulatol (9), 7,8-dihydroxyflavanone (10), 5,7,3′,5′-tetrahydroxyflavanone (11), 4,2′,5′-trihydroxy-4′-methoxychalcone (12), isoliquiritigenin (13), butein (14), and 3′,5′,5,7-tetrahydroxy-6-C-β-D-glucopyranosyl- flavanone (15). (5
- Study of stems yielded three new phenolic compounds (1-3) along with five known phenolics: 4'-hydroxy-2'-methoxychalcone (4), latinone (5), dalbergiphenol (6), 7-hydroxyflavanone (7), and dalbergin (8). (see study below) (6


- No reported folkloric medicinal use in the Philippines.
- Wood: Red-colored, durable and resistant to termites.
Cut wood releases a rose-like fragrance.
- Crafts: Wood used for making high quality furniture, carvings, handicrafts, musical instruments and sewing machines. (7)
- Fuel: Wood used for fuel and making charcoal.
- Dye: Extraction by various organic solvents yields a dye.

Flavonoids / Heartwood:
Study evaluated the heartwood of Dalbergia cochinchinensis for flavonoids, isolated and purified by combination of silical gel, macroporous resin Sephadex LH20 and ODS column chromatography. Study isolated fifteen flavonoids. (see constituents above) (5)
Phenolic Constituents / Tested for Inhibitory Activity Against Teestosterone 5α-Reductase / Stems: Study of stems yielded three new phenolic compounds (1-3) along with four known phenolics. The compounds were evaluated for inhbitory activity against testosterone 5α-reductase, which causes androgen-dependent diseases. (Results not available at present) (see constituents above) (6)

- Cultivated.
- Seeds in the cybermarket.

June 2020


                                                 PHOTOS / ILLUSTRATIONS
IMAGE SOURCE: Photograph / Dalbergia cochinchinensis: Leaves and pods / © Marina Khaytarova / click on image to go to source page / Top Tropicals
OTHER IMAGE SOURCE: Illustration: Dalbergia cochinchinensis / Annals of the Royal Botanic Garden, Calcutta, 10(1): t 64: 1906 / PlantIllustrations.org

Additional Sources and Suggested Readings
Sorting Dalbergia names / /Maintained by: Michel H. Porcher / MULTILINGUAL MULTISCRIPT PLANT NAME DATABASE / Copyright © 1995 - 2020 / A Work in Progress. School of Agriculture and Food Systems. Faculty of Land & Food Resources. The Univers ity of Melbourne. Australia.

Dalbergia cochinchinensis / Wikipedia
Dalbergia cochinchinensis / The Plant List
CYCLES OF DESTRUCTION: Unsustainability, Illegality, and Violence in the Hongmu Trade
/ / EIA: Environmental Investigation Agency
Flavonoids from Heartwood of Dalbergia cochinchinensis / Rong-Hua Liu, Xin-Chao Wen, Feng Shao, Pu-Zhao Zhang, Hui-Lian Huang, Shuag Zhang / Chinese Herbal Medicines, 2016; 8(1): pp 89-93 / / DOI:10.1016/S1674-6384(16)60014-X
Phenolic Constituents from Dalbergiacochinchinensis / Osamu Shirota, Vibha Pathak, Setsuko Sekita, Motoyoshi Satake, Yoshio Nagashima, Yutaka Hirayama, Yusuke Hakamata, and Tatsuo Hayashi / J. Nat. Prod., 2003; 66(8): pp 1128-1131 / https://doi.org/10.1021/np0300683
Dalbergia cochinchinensis / Ken Fern: Tropical Plants Database / Useful Tropical Plants

It is not uncommon for links on studies/sources to change. Copying and pasting the information on the search window or using the DOI (if available) will often redirect to the new link page. (Citing and Using a (DOI) Digital Object Identifier)

                                                            List of Understudied Philippine Medicinal Plants

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