Obtaining Tanning Agents, Dyes, and Enterosorbents from Bast of a Birch Bark
S. A. KUZNETSOVA1, V. A. LEVDANSKY1, B. N. KUZNETSOV1, M. L. SHCHIPKO1, T. V. RYAZANOVA2 and N. M. KOVALCHUK3
1Institute of Chemistry and Chemical Technology,
Siberian Branch of the Russian Academy of Sciences,
Ul. K. Marksa 42, Krasnoyarsk 660049 (Russia) E-mail: ksa@icct.ru
2Siberian State Technological University, Pr. Mira 82, Krasnoyarsk 660049 (Russia)
3Krasnoyarsk State Agrarian University, Pr. Mira 88, Krasnoyarsk 660049 (Russia)
Pages: 399-407
Abstract
Optimization of conditions for obtaining of tanning agents, anthocyanidin dyes, and enterosorbents from bast of a birch bark has been performed. By choosing the appropriate conditions for alkali treatment of a porous fixed residue from extraction processing of bast, enterosorbent was produced, which has exhibited high efficiency when treating acute intestinal infections in animals and dysbacterioses that were caused by application of antibiotics. The comprehensive processing of bast of a birch bark makes it possible to produce about 3 % of resinous matter, 35-40 % of polyphenolic products, 13-15 % of anthocyanidin dye, and about 40 % of enterosorbent.
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