Description_x000D_ Application_x000D_ Aloin, a natural mixed diastereomer (A/B) anthracycline from aloe plant, may be studied as a chemopreventive factor and antineoplastic agent. Aloin inhibits angiogenesis, enhances melanogenesis and regulates transglutaminase activity. Aloin may be used to assess its activity as a selective phosphodiesterase inhibitor. Aloin A is used as a stabilizer in the preparation of gold and silver nanoparticles._x000D_ Packaging_x000D_ 25, 100 mg in poly bottle_x000D_ Biochem/physiol Actions_x000D_ Purgative activity in rats requires activation by Eubacterium sp. strain BAR or similar intestinal anaerobe, presumably by conversion to aloe-emodin anthrone.