Studies of the polyphenol profile of knotwood from larch Larix dahurica Turcz. by HPLC-DAD/ESI-MS/MS found that knotwood differed from the butt-log portion by the presence of a lignan fraction. The major constituents of the polyphenol extract of larch knotwood were the flavonoids dihydroquercetin and quercetin and the lignan secoisolariciresinol; minor constituents, the flavonoids aromadendrene, dihydroisorhamnetin, and eriodictyol and the lignans isolariciresinol and nortrachelogenin.
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Translated from Khimiko-Farmatsevticheskii Zhurnal, Vol. 55, No. 8, pp. 28 – 33, August, 2021.
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Voronin, K.S., Fenin, A.A., Zhevlakova, A.K. et al. Polyphenolic Profile of Larch Knotwood. Pharm Chem J 55, 781–786 (2021). https://doi.org/10.1007/s11094-021-02494-x
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DOI: https://doi.org/10.1007/s11094-021-02494-x