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dc.contributor.authorJanzen, Philipp
dc.contributor.authorZimmer, Katrin
dc.contributor.authorAppelt, Jörn
dc.date.accessioned2024-01-11T12:50:58Z
dc.date.available2024-01-11T12:50:58Z
dc.date.created2023-09-01T10:47:46Z
dc.date.issued2023-06-20
dc.identifier.citationForests. 2023, 14 (6), 1-19.en_US
dc.identifier.issn1999-4907
dc.identifier.urihttps://hdl.handle.net/11250/3111122
dc.description.abstractExtractives from silver birch (Betula pendula) can play an important role in the future bioeconomy by delivering the feedstock, for instance, for antioxidative applications. It is, therefore, inevitable to gain knowledge of the distribution of extractive content and composition in the different tissues of the tree for estimating the potential volumes of valuable extractable compounds. This study examines the extractable compound distribution of different tree tissues such as outer and inner bark and wood, respectively, considering the original height of the stem and comparing the yields after Soxhlet and accelerated solvent extraction (ASE). Eleven parts of the model tree (seven stem discs and four branches) were separated into primary tissues and extracted with a ternary solvent system. The investigated extraction methods resulted in a comparable performance regarding yields and the composition of the extractives. The extractives were divided into single compounds such as betulin, lupeol, γ-sitosterol, and lupeone and substance groups such as carbohydrates, terpenes, aromatics, and other groups. The distribution of single substances and substance groups depends on the location and function of the examined tissues. Furthermore, the evidence for the correlation of a single substance’s location and original tree height is stronger for lupeol than for betulin. Primary betulin sources of the calculated betulin output are the outer bark of the stem and the branches. By using small branches, further potential for the extraction of betulin can be utilized. A model calculation of the betulin content in the current birch tree revealed a significant potential of 23 kg of betulin available as a valuable chemical resource after by-product utilization.en_US
dc.language.isoengen_US
dc.publisherMDPIen_US
dc.rightsNavngivelse 4.0 Internasjonal*
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/deed.no*
dc.titleExtractable Compounds in a Birch Tree—Variations in Composition and Yield Potentialsen_US
dc.typePeer revieweden_US
dc.typeJournal articleen_US
dc.description.versionpublishedVersionen_US
dc.rights.holder© 2023 by the authorsen_US
dc.source.volume14en_US
dc.source.journalForestsen_US
dc.source.issue6en_US
dc.identifier.doi10.3390/f14061279
dc.identifier.cristin2171578
dc.relation.projectEC/H2020/773324en_US
dc.relation.projectNorges forskningsråd: 333259en_US
dc.source.articlenumber1279en_US
cristin.ispublishedtrue
cristin.fulltextoriginal
cristin.qualitycode1


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