EXTRACTION OF BETULIN FROM THE BIRCH BARK BALANCE AT PULP AND PAPER PRODUCTION
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60460709%3A41320%2F20%3A84252" target="_blank" >RIV/60460709:41320/20:84252 - isvavai.cz</a>
Result on the web
<a href="http://www.woodresearch.sk/articles.php?volume=20&issue=84" target="_blank" >http://www.woodresearch.sk/articles.php?volume=20&issue=84</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.37763/wr.1336-4561/65.5.833842" target="_blank" >10.37763/wr.1336-4561/65.5.833842</a>
Alternative languages
Result language
angličtina
Original language name
EXTRACTION OF BETULIN FROM THE BIRCH BARK BALANCE AT PULP AND PAPER PRODUCTION
Original language description
The technical bark was used to obtain betulin, the one which is a barking of birch balance at pulp and paper production. The bark was prepared by grinding it on a crusher of abrasive action and fractionating, thus, the main fractions were obtained: less than 1 mm (35,4%), from 3 to 4,5 mm (31,5%). The bark was separated during the grinding process, the bark prevails in the coarse fraction, while bast is found in the fine fraction. For comparison, model samples of various sizes of birch bark were obtained by hand cutting. Chemical processing of bark fractions and model birch bark samples were carried out by the use of super-high frequencies (SHF) extraction with ethyl alcohol. Raw betulin was settled from extracts. The yield of extractive substances and raw betulin was 12,1-21,9% and 5,1-16,7% from absolutely dry raw materials, the maximum yield was from a coarse fraction of the bark or from model samples with smaller particle sizes. The authors studied the kinetics of the yield of extractive substanc
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
40102 - Forestry
Result continuities
Project
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Continuities
S - Specificky vyzkum na vysokych skolach
Others
Publication year
2020
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Wood Research
ISSN
1336-4561
e-ISSN
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Volume of the periodical
65
Issue of the periodical within the volume
5
Country of publishing house
SK - SLOVAKIA
Number of pages
9
Pages from-to
833-841
UT code for WoS article
000588261100013
EID of the result in the Scopus database
2-s2.0-85096981205