Journal
RUSSIAN CHEMICAL BULLETIN
Volume 66, Issue 5, Pages 875-881Publisher
SPRINGER
DOI: 10.1007/s11172-017-1822-8
Keywords
subcritical extraction; pressurized liquid extraction; birch bark; pentacyclic triterpenes; extractive compounds
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Funding
- Ministry of Education and Science of Russian Federation [4.2518.2017/4.6]
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Natural pentacyclic triterpenes were extracted from birch bark with subcritical solvents. The influence of the solvent nature, temperature, and the number of extraction cycles on the efficiency of the process was studied. Using methanol at 100 A degrees D provides the highest tri-terpene extraction rate. Bark extracts prepared using various solvents were analyzed for chemical composition and antioxidant activity.
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