Acacia meamsii

The only tannins in the world currently being commercially exploited for adhesive applications are those isolated by hot- (or cold-) water extraction of Acacia meamsii bark in the province of Natal, South Africa. Approximately 100,000 tons of mimosa tannin were being produced annually as reported in 1980, the latest year for which production figures were available (41)- Of this amount, about 10,000 tons were used in adhesive applications mainly in South Africa, Australia, and New Zealand. While this number is not large in light of the 300,000 to 400,000 tons of phenol used annually in resins, it does provide evidence that bark tannins can be economically used for adhesives. This application is facilitated by the relatively high cost of phenol and resorcinol in... 

The profisetinidins are the most important proanthocyanidins of commerce, constituting the bulk of wattle Acacia meamsii) and quebracho Schinopsis species) tannins. Their natural occurrence, general synthesis protocols, and chemical transformations, especially under basic conditions, were comprehensively reviewed in Ferreira et al.l Ferreira and Li," Porter, Hemingway, and Ferreira and Bekker. ... 

Fisetinidol (2A,3S (Schinopsis quebracho-col-oradoh (-i-Fisetinidol (2ff,3/i) [Pg.103]

Grainger, C., T. Clarke, M.J. Auldist, K.A. Beauchemin, S.M. McGiim, G.C. Waghom and R.J. Eckard, R.J., 2009. Potential use of Acacia meamsii condensed tannins to reduce methane emissions and nitrogen excretion from grazing dairy cows. Can. J. Anim. Sci. 89, 241-251. 

Mimosa absolute is obtained from the blossoms of the mimosa trees Acacia dealbata Link and A. meamsii De Wild. (Mimosaceae), which grow in the forests of southern France and in Morocco. 

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