A - Papers appearing in refereed journals
Noleto-Dias, C., Harflett, C., Beale, M. H. and Ward, J. L. 2020. Sulfated flavanones and dihydroflavonols from willow. Phytochemistry Letters. 35 (February), pp. 88-93. https://doi.org/10.1016/j.phytol.2019.11.008
Authors | Noleto-Dias, C., Harflett, C., Beale, M. H. and Ward, J. L. |
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Abstract | Phytochemical profiling of a hybrid species of willow, Salix × alberti L. (S. integra Thunb. × Salix suchowensis W.C. Cheng ex G.Zhu) revealed four sulfated flavonoids, which were then isolated from young stem tissue. The structures of dihydroflavonols (flavanonols) taxifolin-7-sulfate (1) and dihydrokaempferol-7-sulfate (2) and flavanones, eridictyol-7-sulfate (3) and naringenin-7-sulfate (4) were elucidated through NMR spectroscopy and high-resolution mass spectrometry. The identified sulfated flavanones and dihydroflavonols have not been previously seen in plants, but the former have been partially characterised as metabolites in mammalian metabolism of dietary flavonoids. In addition to providing full spectroscopic characterisation of these metabolites for the first time, we also compared the in vitro antioxidant properties, via the DPPH radical scavenging assay, of the parent and sulfated flavanones, which showed that 7-sulfation of taxifolin and eriodictyol attenuates but does not remove anti-oxidant activity. |
Keywords | S. × alberti L. (S. integra Thunb. × S. suchowensis) hybrid; Salicaceae; Willow; Sulfated flavanones; Sulfated dihydroflavonols; Antioxidant |
Year of Publication | 2020 |
Journal | Phytochemistry Letters |
Journal citation | 35 (February), pp. 88-93 |
Digital Object Identifier (DOI) | https://doi.org/10.1016/j.phytol.2019.11.008 |
Open access | Published as ‘gold’ (paid) open access |
Funder | Biotechnology and Biological Sciences Research Council |
Funder project or code | Maximising carbon harvest from perennial crops |
Tailoring Plant Metabolism (TPM) - Work package 2 (WP2) - Designer Willows: high value phenolic glycosides for health and industry | |
Publisher's version | |
Accepted author manuscript | |
Output status | Published |
Publication dates | |
Online | 22 Nov 2019 |
Publication process dates | |
Accepted | 13 Nov 2019 |
Publisher | Elsevier Science Bv |
ISSN | 1874-3900 |
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