Journal
FOOD CHEMISTRY
Volume 135, Issue 3, Pages 1173-1182Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.foodchem.2012.05.050
Keywords
Bark; Black spruce; Picea mariana; Lignans; Neolignans; Polyphenols; Resveratrol
Funding
- Natural Science and Engineering Research Council of Canada (NSERC)
- Canadian Institutes of Health Research (CIHR)
- Fonds de la Recherche en Sante du Quebec (FRSQ) of Quebec, Canada
- Fonds d'enseignement et de recherche (FER) of the Faculte de Pharmacie, Universite Laval, Quebec, QC, Canada
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The ethyl acetate soluble fraction obtained from the hot water extract of Picea mariana bark (BS-EAcf) has been demonstrated to have anti-inflammatory and antioxidant properties. Thus, in the current study, we isolated and characterised major compounds of this fraction by HPLC, NMR and MS analyses. On the whole, 28 compounds were identified, among which were five neolignans, seven lignans, trans-resveratrol, three phenolic acids and four flavonoids. To the best of our knowledge, 2,3-dihydro-3-(4-hydroxy-3-methoxyphenyl)-2-(hydroxymethyl)-(2S,3S)-1,4-benzodioxin-6-propanol, threo and erythro 3-methoxy-8,4'-oxyneolignan-3',4,7,9,9'-pentol, pallasiin, (+/-) epi-taxifolin, homovanillyl alcohol, orcinol and 2-[4-(3-hydroxypropyl)-2-methoxyphenoxy]-1.3-propanediol are reported for the first time in the Picea genus. P. mariana dry bark contains at least 104 mu g g(-1) dw of trans-resveratrol and it could be therefore considered as a new accessible source of this molecule. This study provides novel information about the identity of major compounds present in BS-EAcf, which is essential for the understanding of the anti-inflammatory and nutraceutical potential of this extract. (C) 2012 Elsevier Ltd. All rights reserved.
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