from Evernia Furfuracae, treemoss concrete is extracted by hydrocarbon solvent extraction. By alcohol washing of Treemoss Concrete, an absolute is obtained which is more or less viscous and dark colored according to the solvent that was used in the first extraction of the moss. Benzene concrete gives an almost solid absolute, greenish-brown in color, while petroleum ether concrete yields a semi-solid mass or viscous liquid of dark brown color. The odor is woody, dry, forest-like or seaweed-like, herbaceous-green and of great tenacity. The yield of absolute from concrete is good, much higher than in the case of oakmoss. Accordingly, treemoss absolute is much cheaper than oakmoss absolute. However, there is a significant difference in odor characteristics, particularly in the absence of the powerful, yet delicate topnote which is found in true oakmoss. The trade offers countless types of treemoss absolutes and similar extracts, tinctures, concentrates, ultrasonic extracts, integral extracts, fractions, etc. Thus, it would be impossible to give more than a very general description of the odor and appearance of treemoss absolute.
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