Improvement of Excretion Methods and Studying the Composition and Properties of Birch Bark Extracts
B. N. KUZNETSOV1,2, S. A. KUZNETSOVA1, V. A. LEVDANSKY1, I. G. SUDAKOVA1 and O. F. VESELOVA3
1Institute of Chemistry and Chemical Technology,
Siberian Branch of the Russian Academy of Sciences,
Ul. K. Marksa 42, Krasnoyarsk 660049 (Russia) E-mail: bnk @icct.ru
2Krasnoyarsk State University, Pr. Svobodny 79, Krasnoyarsk 660041 (Russia)
3Krasnoyarsk State Medical Academy, Ul. Partizana Zheleznyaka 1, Krasnoyarsk 660022 (Russia)
Pages: 389-398
Abstract
Results of the research into improved techniques to excrete the extracts of biologically active betulin, suberic and tanning agents from the wastes of birch bark are presented. A short-term activation of bark by superheated steam has been used to intensify the processes of excretion of extractives. Selection of optimum conditions for bark activation that ensure the maximum yield of betulin, suberic and tanning agents has been performed. It has been shown that the use of betulin extracts is viable to yield gastroprotective preparations, whereas the use of suberic materials is viable in production of film-forming materials.
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