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Related to catechu: black catechu


(kăt`əcho͞o) or


extract from the heartwood of Acacia catechu, a leguminous tree of the pulsepulse,
in botany, common name for members of the Fabaceae (Leguminosae), a large plant family, called also the pea, or legume, family. Numbering about 650 genera and 17,000 species, the family is third largest, after the asters and the orchids.
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 family, native to India and Myanmar. Catechu is a fast brown dye used for various shades of brown and olive, including the familiar khaki, and also in tanning. White cutch is a synonym for gambier, a leaf extract of a shrub (Uncaria gambir) of the madder family, which is similarly used.
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The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.



a substance obtained from the wood of the East Indian acacia (Acacia catechu) of the family Leguminosae (the plant is native to India and Sri Lanka). By boiling small pieces of the wood, an extract is obtained. After evaporation, the extract becomes a thick reddish brown mass. Catechu contains25–55 percent tannin. It dissolves in acetic acid and is precipi-tated from solution by sulfuric acid or gelatin. Catechu is usedto tan hides and, when oxidized by potassium bichromate, it isused as a dye for cotton and silk fabrics.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
References in periodicals archive ?
Acacia catechu is a deciduous tree with a light feathery crown and dark brown, glabrous, slender, thorny, shining branchlets, usually crooked.
Although content of polyphenol and flavonoid in Areca catechu L.
The cutch tree (scientifically, Acacia catechu) is a thorny South Asian tree in the same family as beans and other legumes.
rubens (red algae) 30.50 32.6 Saw dust 26.73 -- Neem bark 25.57 -- Mangosteen shell 3.15 0.34 Areca catechu 10.66 -- -- 27.15 Rose waste biomass -- 20.63 31.35 17.41 Sargassum wightii 14.90 10.46 Raw-carob 49.63 30.04 HCl-carob NaOH-carob Raw-seeds 31.35 17.41 HCl-seeds 14.90 10.46 NaOH-seeds 49.63 30.04 Adsorbent References Pine bark [48] Peat [49] Hazelnut shells [50] Waste tea leaves [51] Aquatic plant Najas graminea [52] Black carrot residues [53] Coir pith [54] J.
The labeling states that the products contain two types of flavonoids: baicalin (from Scutellaria baicalensis) and catechin (from Acacia catechu).
Tirathaba rufivena Walker (Lepidoptera: Pyralidae) is a major insect pest of Palmaceae such as Areca catechu L.
Methanolic bark extract of Acacia catechu ameliorates benzo(a)pyrene induced lung toxicity by abrogation of oxidative stress, inflammation, and apoptosis in mice.
In rat brains, the dichloromethane fraction extracted from the areca palm (Areca catechu) of AN seed has antidepressant properties due to its inhibition of monoamine oxidase A (MAO-A) [138], but this is a very minor component of BQ and it is unknown whether it is consumed sufficiently among the styles of BQ chewing to affect the user.