Bark of Siberian Conifers: Composition, Use, and Processing to Extract Tannin

The rational use of natural resources, including the creation new and improvement existing technologies in order to reduce anthropogenic impact on environment, is currently an important task. This review covers different methods softwood bark processing. Bark used for production heat-insulating plates, also as filler adhesives composites. In agriculture, it a mulch. Softwood valuable raw material chemical Extractive substances are particular interest. Among them, phenolic compounds very important, tannin nature, which tanning agents leather production. isolation with antibacterial activity pharmaceutical nutraceutical applications. Aqueous-alkaline solutions, monoethanolamine, extracting agent. Currently, tannins have been applied into many fields, medicine, food, beverage, manufacture ink adhesives, dye industry, plastic resins, water purification, surface coatings. Tanning extracts obtained result extraction refined by ultrafiltration. high purity. residue, so-called tan, promising obtaining cellulosic product. addition conversion biotechnological processing alternative option. process tan biodegradation microscopic Trichoderma fungus, biological product trichodermin obtained, protect plants from phytopathogens.