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--- betula_lenta_l [2026/01/25 11:49] – andreas
+++ betula_lenta_l [2026/01/25 12:34] (aktuell) – andreas
@@ Zeile 9: / Zeile 9: @@
 [Power, B., Kleber, C., „Oil of wintergreen and oil of sweet birch.“ Pharm. Rundsch, New York, october (1895); also in: Fritzsche Brothers, Circulars of information No.7, 1894]
+"In this study, the volatile compositions of the bark of B. lenta from authentic and commercial sources were assessed ... The oil was dominated by methyl salicylate (93.24-99.84%)... The minor components o-guaiacol, veratrole, 2-E-4-Z-decadienal, and 2-E-4-E-decadienal were identified as natural marker compounds for authentic sweet birch oil. Surprisingly, none of the tested 27 commercial samples contained any of the identified birch markers. The detection of wintergreen markers such as vitispirane and β-dehydroelsholtzia ketone, the synthetic marker dimethyl-2-hydroxyterephthalate, and ricenalidic acid lactone suggest the addition of wintergreen, synthetic methyl salicylate, and castor oil, respectively." \\
+[Dosoky, Noura S., Ambika Poudel, and Prabodh Satyal. "Authentication and Market Survey of Sweet Birch (Betula lenta L.) Essential Oil." Plants 11.16 (2022): 2132] [[https://www.mdpi.com/2223-7747/11/16/2132/pdf?version=1660724446|PDF]]
 {{:betula_len.jpg|Betula lenta}} \\