title: Picea mariana bark: a new source of trans-resveratrol and other bioactive polyphenols.
abstract: The ethyl acetate soluble fraction obtained from the hot water extract of Picea mariana bark (BS-EAc(f)) 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 104μgg(-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-EAc(f), which is essential for the understanding of the anti-inflammatory and nutraceutical potential of this extract.
authors.affiliation: Centre de Recherche sur le Bois, Département des sciences du bois et de la forêt, Faculté de foresterie et géomatique, Université Laval, Québec, QC, Canada G1V 0A6.
authors.forename: Martha-Estrella
authors.initials: ME
authors.lastname: García-Pérez
authors.forename: Mariana
authors.initials: M
authors.lastname: Royer
authors.forename: Gaëtan
authors.initials: G
authors.lastname: Herbette
authors.forename: Yves
authors.initials: Y
authors.lastname: Desjardins
authors.forename: Roxane
authors.initials: R
authors.lastname: Pouliot
authors.forename: Tatjana
authors.initials: T
authors.lastname: Stevanovic
mesh_terms: D015394:Molecular Structure; D028222:Picea / Q000737:chemistry*; D024301:Plant Bark / Q000737:chemistry*; D010936:Plant Extracts / Q000737:chemistry*; D059808:Polyphenols / Q000032:analysis*; D000077185:Resveratrol; D013267:Stilbenes / Q000737:chemistry*
chemical_list: D010936:Plant Extracts; D059808:Polyphenols; D013267:Stilbenes; D000077185:Resveratrol