EXTRACTION OF BETULIN FROM THE BIRCH BARK BALANCE AT PULP AND PAPER PRODUCTION

Kód výsledku v 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>

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

EXTRACTION OF BETULIN FROM THE BIRCH BARK BALANCE AT PULP AND PAPER PRODUCTION

Popis výsledku v původním jazyce

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

Název v anglickém jazyce

EXTRACTION OF BETULIN FROM THE BIRCH BARK BALANCE AT PULP AND PAPER PRODUCTION

Popis výsledku anglicky

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

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

40102 - Forestry

Projekt

—

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2020

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Wood Research

ISSN

1336-4561

e-ISSN

—

Svazek periodika

65

Číslo periodika v rámci svazku

5

Stát vydavatele periodika

SK - Slovenská republika

Počet stran výsledku

9

Strana od-do

833-841

Kód UT WoS článku

000588261100013

EID výsledku v databázi Scopus

2-s2.0-85096981205