acacia senegal


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acacia

acacia

Over 1300 species! 960 are in Australia, the rest all over the worldespecially warm and tropical areas. This is the famous "Africa tree" we always see in pictures with a giraffe eating from it. There are even a dozen species in America and Europe. The American Black Locust tree is mistaken for Acacia, and thus called the "False Acacia". The African varieties tend to be thorny (called "thorn trees") , the Australian ones have no thorns. Acacias generally have fuzzy yellow flowers and reddish brown wood. Very fire resistant. Seed pods are three inches long with 5-6 brownish black edible seeds. Young leaves, flowers and pods are edible raw or cooked. Seeds are often used for food, either raw or toasted with salt, or ground into powder and added to sauces. Young shoots are added to salads, soups, curries, omelettes and stir-fries. Acacia is a common ingredient in soft drinks. Bark is used to make a gum called Gum Arabic, a thickening agent in deserts. Used to treat sore throat, relieving clogged bronchial passages, and is often mixed with water to make a paste to soothe and heal external injuries. High tannin levels make it very astringent and a good preservative. Bark, root and resin used to make incense and also ink dye. Fruit is used to make popular alcoholic beverage. Caution: Nineteen different species of American Acacia contain potentially toxic cyanogenic glycosides. Some of these are : Acacia erioloba, cunninghamii, obtusifolia, sieberiana, sieberiana.
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2010) found that prices of gum from Acacia senegal ranged between 150 and 400 FCFA (3) per kg for transactions with Cameroonian traders and between 200 and 600 FCFA per kg with Nigerian traders.
In Cameroon, attempts were therefore made to domesticate Acacia senegal trees.
Furthermore, the lack of clear rules on over-tapping is slowly causing the destruction of Acacia senegal trees (Sene and Ndione 2009).
Connolly S, Fenyo JC, Vandevelde MC (1987) Heterogeneity and homogeneity of an arabinogalactan-protein: Acacia senegal gum.
Connolly S, Fenyo JC, Vandevelde MC (1988) Effect of proteinase and the macromolecular distribution or Acacia senegal gum.
Randall RC, Phillips GO, Williams PA (1989) Fractionation and characterization of gum from Acacia senegal.
Only Acacia senegal produces abundant nectar, thus monopolizing visitation by large nectar feeding butterflies, wasps, and sunbirds; these are probably efficient pollen vectors between trees (Waser 1982).
A) Acacia senegal, across four sites in the autumn rains, 1996-1997 Vitiwini Site Ubani Road Zange Kisima Road 0.
Acacia senegal showed significant differences among sites in the timing of pollen release that correspond to differences in local Acacia community structure.
Clearly, protection of acacia senegal, which can be an important part of the barrier against desertification, depends upon prices small farmers and herders receive for gum arabic.
These data distinguished 77 distinct vegetation classes in northern Kenya, twelve of which contained Acacia senegal (Appendix, Table 6).
In areas where Acacia senegal is abundant, households market more gum.