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dc.contributor.authorBianchi, Sauro-
dc.contributor.authorKroslakova, Ivana-
dc.contributor.authorJanzon, Ron-
dc.contributor.authorMayer, Ingo-
dc.contributor.authorSaake, Bodo-
dc.contributor.authorPichelin, Frédéric-
dc.date.accessioned2018-06-28T14:57:04Z-
dc.date.available2018-06-28T14:57:04Z-
dc.date.issued2015-
dc.identifier.issn0031-9422de_CH
dc.identifier.issn1873-3700de_CH
dc.identifier.urihttps://digitalcollection.zhaw.ch/handle/11475/7499-
dc.description.abstractCondensed tannins extracted from European softwood bark are recognized as alternatives to synthetic phenolics. The extraction is generally performed in hot water, leading to simultaneous extraction of other bark constituents such as carbohydrates, phenolic monomers and salts. Characterization of the extract's composition and identification of the extracted tannins' molecular structure are needed to better identify potential applications. Bark from Silver fir (Abies alba [Mill.]), European larch (Larix decidua [Mill.]), Norway spruce (Picea abies [Karst.]), Douglas fir (Pseudotsuga menziesii [Mirb.]) and Scots pine (Pinus sylvestris [L.]) were extracted in water at 60°C. The amounts of phenolic monomers, condensed tannins, carbohydrates, and inorganic compounds in the extract were determined. The molecular structures of condensed tannins and carbohydrates were also investigated (HPLC-UV combined with thiolysis, MALDI-TOF mass spectrometry, anion exchange chromatography). Distinct extract compositions and tannin structures were found in each of the analysed species. Procyanidins were the most ubiquitous tannins. The presence of phenolic glucosides in the tannin oligomers was suggested. Polysaccharides such as arabinans, arabinogalactans and glucans represented an important fraction of all extracts. Compared to traditionally used species (Mimosa and Quebracho) higher viscosities as well as faster chemical reactivities are expected in the analysed species. The most promising species for a bark tannin extraction was found to be larch, while the least encouraging results were detected in pine. A better knowledge of the interaction between the various extracted compounds is deemed an important matter for investigation in the context of industrial applications of such extracts.de_CH
dc.language.isoende_CH
dc.publisherElsevierde_CH
dc.relation.ispartofPhytochemistryde_CH
dc.rightsLicence according to publishing contractde_CH
dc.subjectAbies albade_CH
dc.subjectCarbohydratede_CH
dc.subjectCondensed tanninde_CH
dc.subjectLarix deciduade_CH
dc.subjectMALDI-TOF MSde_CH
dc.subjectPicea abiesde_CH
dc.subjectPinus sylvestrisde_CH
dc.subjectPseudotsuga menziesiide_CH
dc.subjectSoftwood bark extractde_CH
dc.subjectThiolysisde_CH
dc.subjectBiflavonoidsde_CH
dc.subjectCatechinde_CH
dc.subjectChromatographyde_CH
dc.subjectFlavonoidsde_CH
dc.subjectGlucosidesde_CH
dc.subjectHot temperaturede_CH
dc.subjectMolecular structurede_CH
dc.subjectNorwayde_CH
dc.subjectPiceade_CH
dc.subjectPinusde_CH
dc.subjectPlant Barkde_CH
dc.subjectPlant extractsde_CH
dc.subjectProanthocyanidinsde_CH
dc.subjectSpectrometryde_CH
dc.subjectTanninsde_CH
dc.subjectWaterde_CH
dc.subjectMassde_CH
dc.subjectMatrix-assisted laser desorption-ionizationde_CH
dc.subjectHigh pressure liquidde_CH
dc.subject.ddc572: Biochemiede_CH
dc.titleCharacterization of condensed tannins and carbohydrates in hot water bark extracts of European softwood speciesde_CH
dc.typeBeitrag in wissenschaftlicher Zeitschriftde_CH
dcterms.typeTextde_CH
zhaw.departementLife Sciences und Facility Managementde_CH
zhaw.organisationalunitInstitut für Chemie und Biotechnologie (ICBT)de_CH
dc.identifier.doi10.1016/j.phytochem.2015.10.006de_CH
dc.identifier.pmid26547588de_CH
zhaw.funding.euNode_CH
zhaw.originated.zhawYesde_CH
zhaw.pages.end61de_CH
zhaw.pages.start53de_CH
zhaw.publication.statuspublishedVersionde_CH
zhaw.volume120de_CH
zhaw.publication.reviewPeer review (Publikation)de_CH
zhaw.funding.snfNRP 66de_CH
zhaw.webfeedChemieingenieurwesende_CH
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Bianchi, S., Kroslakova, I., Janzon, R., Mayer, I., Saake, B., & Pichelin, F. (2015). Characterization of condensed tannins and carbohydrates in hot water bark extracts of European softwood species. Phytochemistry, 120, 53–61. https://doi.org/10.1016/j.phytochem.2015.10.006
Bianchi, S. et al. (2015) ‘Characterization of condensed tannins and carbohydrates in hot water bark extracts of European softwood species’, Phytochemistry, 120, pp. 53–61. Available at: https://doi.org/10.1016/j.phytochem.2015.10.006.
S. Bianchi, I. Kroslakova, R. Janzon, I. Mayer, B. Saake, and F. Pichelin, “Characterization of condensed tannins and carbohydrates in hot water bark extracts of European softwood species,” Phytochemistry, vol. 120, pp. 53–61, 2015, doi: 10.1016/j.phytochem.2015.10.006.
BIANCHI, Sauro, Ivana KROSLAKOVA, Ron JANZON, Ingo MAYER, Bodo SAAKE und Frédéric PICHELIN, 2015. Characterization of condensed tannins and carbohydrates in hot water bark extracts of European softwood species. Phytochemistry. 2015. Bd. 120, S. 53–61. DOI 10.1016/j.phytochem.2015.10.006
Bianchi, Sauro, Ivana Kroslakova, Ron Janzon, Ingo Mayer, Bodo Saake, and Frédéric Pichelin. 2015. “Characterization of Condensed Tannins and Carbohydrates in Hot Water Bark Extracts of European Softwood Species.” Phytochemistry 120: 53–61. https://doi.org/10.1016/j.phytochem.2015.10.006.
Bianchi, Sauro, et al. “Characterization of Condensed Tannins and Carbohydrates in Hot Water Bark Extracts of European Softwood Species.” Phytochemistry, vol. 120, 2015, pp. 53–61, https://doi.org/10.1016/j.phytochem.2015.10.006.


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