Barks mimosa

Acacia nemu Willd. (Syn. Albizia julibrissin) He Huan Pi (Mimosa) (bark) Tannins, saponins.49 Tonic, stimulant, anthelmintic. 

The vegetable tannins can be divided into two main classes, i.e. hydrolysable and condensed. The hydrolysable tannins are obtained commercially from, for example, sumac leaves, tara pods, myrabolam fruits, Turkish or Chinese galls or oak bark. Examples of condensed tannins are those from quebracho wood, mimosa bark and gambier leaves and twigs. 

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 tenuiflora. See Mimosa tenuiflora bark extract Mimosa tenuiflora leaf extract Mimosa tenuiflora bark extract CAS 93685-96-2 EINECS/ELINCS 297-646-0 Synonyms Mimosa bark extract Mimosa tenuiflora... 

Condensed tannins constitute more than 90 per cent of the total world production of commercial tannins (200000 tons per year) [11]. Their high reactivity towards aldehydes and other reagents renders them both chemically and economically more interesting for the preparation of adhesives, resins and other applications apart from leather tanning. The main commercial species, such as mimosa and quebracho, also yield excellent heavy duty leather. Condensed tannins and their flavonoid precursors are known for their wide distribution in nature and particularly for their substantial concentration in the wood and bark of various trees. These include various Acacia (wattle or mimosa bark extract), Schinopsis (quebracho wood extract), Tsuga (hemlock bark extract), Rhus (sumach extract) species, and various Pinus bark extract species, from which commercial tannin extracts are manufactured. 

Viviers P M, Botha J J, Ferreira D, Roux D G, Saayman H M 1983 Synthesis of condensed tannins. Part 7. Angular (4,6 4,8)-prorobinetinidin triflavonoids from blackwattle ( mimosa ) bark extract. J Chem Soc Perkin Trans I 17-22... 

More recently, a modification of the system described by Kreibich has been used extensively in industry with good success. Part A of the adhesive is again a standard phenol-resorcinol-formaldehyde (PRF) cold-setting adhesive, with powder hardener added at its standard pH. Part B can be either the same PRF adhesive with no hardener and the pH adjusted to 12, or a 50 to 55% tannin extract solution at a pH of 12-13, provided that the tannin is of the condensed or flavonoid type, such as mimosa, quebracho, or pine bark extract, with no hardener [118,135-137], The results obtained with these two systems are good and the resin not only has all the advantages desired but also the use of vegetable tannins and the halving of the resorcinol content makes the system considerably cheaper [118,135-137]. 

For our experiment we will be using Mimosa hostilis root-bark to provide a very pure product of NN-DMT without the over powering influence of 5-MeO-DMT or the negative side effects of 5-OH-DMT. For a solvent we will be using common naphtha. Notes on adaptations for chemicals and other variations of this process are described as well. The following is a list of materials ... 

Mimosa hostilis root-bark (30g suggested starting amount - 45/1 OOg)... 

Grind the plant material to a fine powder. The finer ground the material the better your yields will be. The best technique to pulverize and rupture the cell structure of any plant material is to repeatedly freeze and thaw it over and over again. An example of a plant requiring this treatment is Phalaris arundinacea, a strong and limber grass. Mimosa hostilis root-bark is easily pulverized to a fine powder in a blender, releasing a pink haze. 

Proanthocyanidins Mimosa Acacia mearnsii) bark taimin. Linear (+) DHB 305... 

EXTENSIONS AND COMMENTARY N-Methyltryptamine (monomethyltryptamine, NMT) is an alkaloid that has been found in the bark, shoots and leaves of several species of Virola, Acacia and Mimosa. However, the major snuffs associated with these plant have been shown to also contain 5-MeO-DMT and are discussed there. NMT has been synthesized in a number of ways. One can react 3-(2-bromoethyl)indole with methylamine. NMT can be isolated as the benzoyl derivative from the methylation of tryptamine with methyl iodide followed by reaction with benzoyl chloride, with the hydrolysis of this amide with alcoholic KOH. It can also be synthesized from indole with oxalyl chloride, with the resulting glyoxyl chloride reacting with methylamine in ether to give indol-3-yl N-methylglyoxalylamide (mp 223-224 °C from IPA) which is obtained in a 68% yield, which is reduced to NMT to give the amine hydrochloride (mp 175-177 °C from ) in a 75% yield. The most simple and direct synthesis is the formamide reduction given above. 

Interest in use of condensed tannins as components of adhesive formulations began about three decades ago. While research studies have been carried out in widely scattered laboratories around the world, three major areas of activity can be distinguished. These are 1) development of bark extracts and commercial production facilities on the west coast of North America, 1953 to 1975 2) application of tannins in adhesive formulations in South Africa based on indigenously produced mimosa (wattle) tannin, early 1970 s to the present and 3) a resurgence of interest in pine bark as raw material for tannin-based adhesives, beginning in the middle 1970 s. Each of these activities has been characterized by parallel efforts on structural identification of the tannins and development of unique methods for incorporating the isolated tannins into adhesives. 

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... 

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