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Open AccessArticle

Clonal Variation in the Bark Chemical Properties of Hybrid Aspen: Potential for Added Value Chemicals

1
Production Systems, Natural Resources Institute Finland, Ounasjoentie 6, 96200 Rovaniemi, Finland
2
Production Systems, Natural Resources Institute Finland, Tietotie 2, 02150 Espoo, Finland
3
Production Systems, Natural Resources Institute Finland, Vipusenkuja 5, 57200 Savonlinna, Finland
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Production Systems, Natural Resources Institute Finland, Kaironiementie 15, 39700 Parkano, Finland
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Production Systems, Natural Resources Institute Finland, Myllytie 1, 31600 Jokioinen, Finland
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Natural Resources, Natural Resources Institute Finland, Tietotie 4, 31600 Jokioinen, Finland
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Research Unit of Sustainable Chemistry, University of Oulu, FI-90570 Oulu, Finland
*
Authors to whom correspondence should be addressed.
Academic Editor: Daniel Granato
Molecules 2020, 25(19), 4403; https://doi.org/10.3390/molecules25194403
Received: 31 August 2020 / Revised: 22 September 2020 / Accepted: 22 September 2020 / Published: 25 September 2020
(This article belongs to the Special Issue Recovery of Phytochemicals from Forest Materials)
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. View Full-Text
Keywords: hybrid aspen; clonal variation; bark; cascade; extractive; lignocellulosic biomass; suberic acid; condensed tannin; antioxidative capacity hybrid aspen; clonal variation; bark; cascade; extractive; lignocellulosic biomass; suberic acid; condensed tannin; antioxidative capacity
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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.

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