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Seasonal dynamics in structural characteristics within bark stems of cultivated willow (Salix sp.) by NMR and time-gated Raman spectroscopy

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dc.contributor Aalto-yliopisto fi
dc.contributor Aalto University en
dc.contributor.author Dou, Jinze
dc.contributor.author Kögler, Martin
dc.contributor.author Kesari, Kavindra Kumar
dc.contributor.author Pitkänen, Leena
dc.contributor.author Vuorinen, Tapani
dc.date.accessioned 2023-03-15T07:10:40Z
dc.date.available 2023-03-15T07:10:40Z
dc.date.issued 2023-03-07
dc.identifier.citation Dou , J , Kögler , M , Kesari , K K , Pitkänen , L & Vuorinen , T 2023 , ' Seasonal dynamics in structural characteristics within bark stems of cultivated willow ( Salix sp.) by NMR and time-gated Raman spectroscopy ' , Green Chemistry , vol. 25 , no. 5 , pp. 1908-1919 . https://doi.org/10.1039/d2gc04476e en
dc.identifier.issn 1463-9262
dc.identifier.issn 1463-9270
dc.identifier.other PURE UUID: f3808200-6d84-4a09-8f1d-62eb88633371
dc.identifier.other PURE ITEMURL: https://research.aalto.fi/en/publications/f3808200-6d84-4a09-8f1d-62eb88633371
dc.identifier.other PURE LINK: http://www.scopus.com/inward/record.url?scp=85148707549&partnerID=8YFLogxK
dc.identifier.other PURE FILEURL: https://research.aalto.fi/files/102602441/CHEM_Dou_et_al_Seasonal_dynamics_2023_Green_Chemistry.pdf
dc.identifier.uri https://aaltodoc.aalto.fi/handle/123456789/120110
dc.description Funding Information: This work also made use of the RawMatTERS Finland infrastructure (RAMI) facilities based at Aalto University. This work was a part of the Academy of Finland's Flagship Programme under project no. 318890 and no. 318891 (Competence Center for Materials Bioeconomy, FinnCERES). VTT Finland was supported by the Academy of Finland, provided through an Academy of Finland Flagship Programme (PREIN) on Photonics Research and Innovation, PREIN, no. 320165. The authors thank the Sensing Solutions research area of VTT for their support with the spectroscopic equipment and measurement time.
dc.description.abstract The present study measures the seasonal dynamics of the chemical characteristics of pectin, hemicellulose, starch, protein, and soluble carbohydrates in the tissues of Scandinavian willow bark, which were examined during a complete annual cycle. Wet-chemical purification and non-destructive time-gated (TG) Raman spectroscopy were applied to illustrate the chemical characteristics as a response to the seasonal effect. Starch was found in a more complex linkage connection with hemicellulose and pectin in non-winter seasons, which is also supported by TG Raman spectroscopy. Interestingly, TG Raman spectroscopy also revealed that protein is more prominent in winter-harvested willow bark. The most striking seasonal effect investigated was in the structural characteristics of pectin. The pectin of winter-harvested willow bark has a larger proportion of the highly branched rhamnogalacturonan I (RG-I) domain compared to non-winter-harvested pectin. The study aims to build on this structural knowledge to provide seasonal-tailored enzymes and treat willow bark biologically so that sclerenchyma fibre bundles can be isolated. We demonstrate here for the first time that a combination of non-destructive TG Raman and wet-chemical purification identification methods provides more knowledge about the compositional changes throughout the seasonal variation of compounds in willow bark. The correlation between the seasonal dynamics and the structure of pectin from willow bark is discussed for the first time, which provides the essential knowledge required for optimizing the microbial consortium in valorizing willow bark that can possibly be harvested from multiple seasons. en
dc.format.extent 1908-1919
dc.format.mimetype application/pdf
dc.language.iso en en
dc.publisher Royal Society of Chemistry
dc.relation.ispartofseries Green Chemistry en
dc.relation.ispartofseries Volume 25, issue 5 en
dc.rights openAccess en
dc.title Seasonal dynamics in structural characteristics within bark stems of cultivated willow (Salix sp.) by NMR and time-gated Raman spectroscopy en
dc.type A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä fi
dc.description.version Peer reviewed en
dc.contributor.department Department of Bioproducts and Biosystems
dc.contributor.department VTT Technical Research Centre of Finland
dc.identifier.urn URN:NBN:fi:aalto-202303152436
dc.identifier.doi 10.1039/d2gc04476e
dc.type.version publishedVersion

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