University of Oulu

Korkalo, P.; Korpinen, R.; Beuker, E.; Sarjala, T.; Hellström, J.; Kaseva, J.; Lassi, U.; Jyske, T. Clonal Variation in the Bark Chemical Properties of Hybrid Aspen: Potential for Added Value Chemicals. Molecules 2020, 25, 4403.

Clonal variation in the bark chemical properties of hybrid aspen : potential for added value chemicals

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Author: Korkalo, Pasi1; Korpinen, Risto2; Beuker, Egbert3;
Organizations: 1Production Systems, Natural Resources Institute Finland, Ounasjoentie 6, 96200 Rovaniemi, Finland
2Production Systems, Natural Resources Institute Finland, Tietotie 2, 02150 Espoo, Finland
3Production Systems, Natural Resources Institute Finland, Vipusenkuja 5, 57200 Savonlinna, Finland
4Production Systems, Natural Resources Institute Finland, Kaironiementie 15, 39700 Parkano, Finland
5Production Systems, Natural Resources Institute Finland, Myllytie 1, 31600 Jokioinen, Finland
6Natural Resources, Natural Resources Institute Finland, Tietotie 4, 31600 Jokioinen, Finland
7Research Unit of Sustainable Chemistry, University of Oulu, FI-90570 Oulu, Finland
Format: article
Version: published version
Access: open
Online Access: PDF Full Text (PDF, 1.5 MB)
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Language: English
Published: Multidisciplinary Digital Publishing Institute, 2020
Publish Date: 2021-02-12


This study aims to promote comprehensive utilization of woody biomass by providing a knowledgebase on the utility of aspen bark as a new alternative source for fossil-based chemicals. The research focused on the analysis of clonal variation in: (1) major chemical components, i.e., hemicelluloses, cellulose, and lignin; (2) extraneous materials, i.e., bark extractives, and suberic acid; (3) condensed tannins content and composition; and (4) screening differences in antioxidative properties and total phenolic content of hot water extracts and ethanol-water extracts of hybrid aspen bark. Results of this study, the discovery of clonal variation in utilizable chemicals, pave the way for further research on added-value potential of under-utilized hybrid aspen and its bark. Clonal variation was found in notable part of chemicals with potential for utilization. Based on the results, an appropriate bark raw material can be selected for tailored processing, thus improving the resource efficiency. The results also indicate that by applying cascade processing concepts, bark chemical substances could be more efficiently utilized with more environmentally friendly methods.

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Series: Molecules
ISSN: 1420-3049
ISSN-E: 1420-3049
ISSN-L: 1420-3049
Volume: 25
Issue: 19
Article number: 4403
DOI: 10.3390/molecules25194403
Type of Publication: A1 Journal article – refereed
Field of Science: 116 Chemical sciences
Funding: This research was funded by Finnish Natural Resources Research Foundation, grant number 2019069.
Copyright information: © 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (