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Family Equisetaceae
Sumbak
Equisetum debile Roxb.
SCOURING RUSH

Mu zei

Scientific names Common names
Equisetum debile Roxb. Sumbak (Tag.)
Equisetum ramosissimum Desf. subsp. debile Equisetum (Engl.)
  Bottlebrush plant (Engl.)
  Scouring rush (Engl.)
  Mu zei (Chin.)
Quisumbing's compilation lists Equisetum debile (sumbak) and E. ramosissimum (putod) as separate species. Other compilations list them as specie synonyms.

Botany
Sumbak's rootstocks are jointed and branched. Roots are in whorls from the nodes. Fertile stems are erect, simple, 60 to 70 cm long, regularly striated, and more or less smooth. Leaves are much reduced, simple, united into a sheath at the nodes, their tips thinner and prolonged into teeth, somewhat funnel-shaped, 5 to 7 mm long. Spikes are 8 to 10 mm long, obtuse.

Distribution
Reported from Benguet Province in Luzon, in Bukidnon and Davao Provinces in Mindanao.

Parts used
Whole plant.

Properties
All species thought to contain alkaloids toxic to livestock.

Uses

Folkloric
- In Malaysia, used for pains in the joints.
- In Africa, juice of E. debile taken orally to cure jaundice and hepatitis; also reported use as diuretic and treatment of kidney infections.
- In Nepal, paste from pounded plants applied to cure old ulcers.
- In India, used for the treatment of urinary tract and kidney stones.
Others
- High silica content of shoots provide a rough abrasive texture useful for scouring of cooking pots.
- In New Guinea, used to polish ornaments and smooth handles.


Studies
Hypolipidemic:
Study showed E. debile Roxb alcohol extract decreased the triglyceride and total cholesterol of rat and triglyceride of rabbits. The concentration of b-apoprotein was not influenced.
Debilosides: Study isolated three new megastigmane glucosides from the whole plant of E. debile, with four known constituents - blumenol A, corchoinoside C, sammangaoside A and (3S,5R,6R,7E,9S)-9-[(β-d-glucopyranosyl)oxy]megastigm-7-ene-3,5,6-triol.

Availability
Wild-crafted.

April 2011

IMAGE SOURCE: Equisetum ramosissimum / Hippolyte Coste - Flore descriptive et illustrée de la France, de la Corse et des contrées limitrophes, 1901-1906 / Public Domain / alterVISTA

Additional Sources and Suggested Readings
(1)
Horsetails: State Prohibited Weed / Compiled by Ian Faithfull / Keith Turnbull Research Institute, Franston
(2)
Medicinal plants used for the treatment of jaundice and hepatitis based on socio-economic documentation / Arshard Mehmood Abbasi, Mir Ajap Khan et al / African Journal of Biotechnology Vol. 8 (8), pp. 1643-1650, 20 April, 2009
(3)
The Modifying Effect on Hyperlipidemia by the Extraction of Equisetum Debile Roxb / Journal of Qiqihar Medical
(4)
Debilosides A–C: Three New Megastigmane Glucosides from Equisetum debile / Xiao-Hong Xu, Chang-Heng Tan et al / Helvetica Chimica Acta, Volume 89, Issue 7, pages 1422–1426, July 2006 / DOI: 10.1002/hlca.200690142
(5)
Ethnomedicinal Plants Used Against Skin Diseases in Some Villages of Kali Gandaki, Bagmati and Tadi Likhu Watersheds of Nepal / Ananda Raj Joshi and Kunjani Joshi / Ethnobotanical Leaflets 11: 235-246. 2007.
(6)
Medicinal plants of Muzaffarnagar district used in treatment of urinary tract and kidney stones / Prachi; Chauhan, N.; Kumar, D.; Kasana, M. S. / Journal Indian Journal of Traditional Knowledge 2009 Vol. 8 No. 2 pp. 191-195


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