Please use this identifier to cite or link to this item: https://doi.org/10.3390/molecules18044282
DC FieldValue
dc.titleAntioxidant activity and proanthocyanidin profile of selliguea feei rhizomes
dc.contributor.authorFu, C.
dc.contributor.authorWang, H.
dc.contributor.authorNg, W.L.
dc.contributor.authorSong, L.
dc.contributor.authorHuang, D.
dc.date.accessioned2014-10-16T08:20:36Z
dc.date.available2014-10-16T08:20:36Z
dc.date.issued2013-04
dc.identifier.citationFu, C., Wang, H., Ng, W.L., Song, L., Huang, D. (2013-04). Antioxidant activity and proanthocyanidin profile of selliguea feei rhizomes. Molecules 18 (4) : 4282-4292. ScholarBank@NUS Repository. https://doi.org/10.3390/molecules18044282
dc.identifier.issn14203049
dc.identifier.urihttp://scholarbank.nus.edu.sg/handle/10635/93118
dc.description.abstractProanthocyanidins from the rhizomes of Selliguea feei (PSFs) were solvent-extracted and fractionated by Sephadex LH-20 column chromatography to give a 2.42% isolated yield (dry matter basis). 1H-NMR spectroscopy revealed the mean degree of polymerization (mDP) to be 2.6. 13C-NMR analysis showed typical signals for afzelechin/epiafzelechin units. Clear peaks at 76 ppm and 84 ppm indicated that both stereoisomers (afzelechin/ epiafzelechin) are present. In agreement with the NMR spectra, the ESI-MS spectrum indicated that PSFs are mainly monomers to trimers consisting of afzelechin/epiafzelechin units with A-type and B-type interflavanyl linkages. A trimer was purified and identified as demethylated selligueain B. Thiolysis confirmed the structure and the thiolytic products, methyl 2-[(2R, 3R, 4S)-3,5,7-trihydroxy-2-(4-hydroxyphenyl)chroman-4-yl]acetate (1) and 4β-(carboxymethyl)sulphanylepiafzelechin-(2β→O→7, 4β→8)-epiafzelechin methyl ester (2), were purified and characterized. Selligueain A, demethylated selligueain B, compounds 1 and 2 possess high antioxidant capacity at 1.18 × 104, 1.16 × 10 4, 0.95 × 104 and 1.29 × 104 μmol TE/g, respectively. © 2013 by the authors.
dc.description.urihttp://libproxy1.nus.edu.sg/login?url=http://dx.doi.org/10.3390/molecules18044282
dc.sourceScopus
dc.subjectAntioxidant activity
dc.subjectProanthocyanidins
dc.subjectSelliguea feei
dc.subjectThiolysis
dc.typeArticle
dc.contributor.departmentCHEMISTRY
dc.description.doi10.3390/molecules18044282
dc.description.sourcetitleMolecules
dc.description.volume18
dc.description.issue4
dc.description.page4282-4292
dc.description.codenMOLEF
dc.identifier.isiut000318020100043
Appears in Collections:Staff Publications

Show simple item record
Files in This Item:
There are no files associated with this item.

SCOPUSTM   
Citations

10
checked on Oct 15, 2019

WEB OF SCIENCETM
Citations

10
checked on Oct 8, 2019

Page view(s)

55
checked on Oct 12, 2019

Google ScholarTM

Check

Altmetric


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.