Black mimosa

Mimosa genus, including M. hostilis and M. verrucosa also called jurema preta (hostilis), jurema branca (verrucosa), mimosa, caatinga, white jurema, and black jurema... 

Botha, J.J., D. Ferreira, and D.G. Roux Condensed Tannins Direct Synthesis, Structure, and Absolute Configuration of Four Biflavanoids from Black Wattle Bark ( Mimosa ) Extract. J. Chem. Soc., Chem. Commun., 700 (1978) Synthesis of Condensed Tannins. Part 4. A Direct Biomimetic Approach to [4,6]- and [4,8]-Biflavanoids. J. Chem. Soc., Perkin Trans. 1, 1235 (1981). 

Synonyms Acacia decurrens Acacia decurrens flowers Black wattle Mimosa Mimosa flowers Wattle, black... 

Miiisperse 954. See Zinc phosphate Miiisperse 955. See Zinc chloride Miiisperse 956. See Sodium metaphosphate Milopol G-7. See PEG-7 glyceryl cocoate Milori blue. See Ferric ferrocyanide Milvex 1000. See Nylon 66 Mimosa. See Black wattle (Acacia decurren) Mimosa bark extract. See Mimosa tenuiflora bark extract... 

Mimosa flowers. See Black wattle (Acacia decurren)... 

Botha J J, Ferreira D, Roux D G 1978 Condensed tannins Direct synthesis, structure and absolute configuration of four biflavanoids from black wattle (mimosa) extract. J Chem Soc Chem Commun 700-702... 

Most of the recent efforts to develop uses for the condensed tannins have centered on their application in wood adhesives. Reviews by Pizzi (182, 186) and others (15, 78, 87, 93, 208) provide references to several hundred papers and patents on this subject. Despite world-wide research efforts on other sources of tannins, particularly since the 1972-1973 petroleum shortage, the mimosa or wattle tannins extracted from the bark of black wattle Acacia mearnsii) remain the major source of condensed tannins exploited commercially for adhesive manufacture. Of the approximately 100000 tons of wattle tannin produced annually, only about 10000 tons are used in wood adhesives, predominantly in South Africa but also in Australia and New Zealand (186). The extensive use of wattle tannins by the wood products industry of South Africa is impressive indeed, as these tannins have partly replaced phenol and resorcinol usage in adhesives for bonding of particleboard, plywood, and laminated timbers (182, 186, 213). Three factors have contributed to the success in use of wattle tannin-based adhesives, namely the comparatively high costs of phenol and resorcinol in the Southern Hemisphere, their resorcinolic functionality and low molecular weight and, perhaps most importantly, the commitment by the research and industrial communities of these countries to reduce the reliance of the forest products industry on petroleum-based adhesives. 

One way to assure low raw material costs is to have multiple use of the material. If wood chips, sawdust, or bark is to be extracted, the residue should be useful for another purpose. Examples of this approach are 1) Isolation of arabinogalac-tan gum from western larch Larix occidentalis) heartwood chips followed by kraft pulping of the extracted chips 2) isolation of mimosa tannins from bark of trees in which the peeled wood Acacia sp.) serves as raw material for chemical cellulose production (South Africa) and 3) tall oil separation from the concentrated black liquor derived from kraft pulping of southern pines. In each of these cases the brunt of the raw material cost is carried by some product other than the extractive. Assurance of low raw material costs virtually dictates extractive isolation and processing ancillary to a forest products processing plant. 

Viviers, P. M., J. J. Botha, D. Ferreira, D. G. Roux, and H. M. Saayman Synthesis of condensed tannins. Part 7. [4,6 4,8]-Linked angular prorobinetinidin triflavanoids from black wattle ( Mimosa ) extract (submitted). 

---